Journal articles: 'Tool-life testing'

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Janásek, Adam, Robert Čep, Lenka Čepová, Jiří Kratochvíl, Vladimír Vrba, and Lenka Petřkovská. "Tool Life Reliability of Indexable Cutting Inserts." Technological Engineering 9, no. 2 (December 1, 2012): 30–34. http://dx.doi.org/10.2478/teen-2012-0008.

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Abstract This paper presents experimental testing of the cutting ability for indexable cutting inserts. The main goal will be to select a suitable test for determine the cutting abilities of cutting inserts. Nowadays all manufacturers want to achieve lower cutting forces so can permit higher speeds and feeds, without increasing the risk of chipping. For evaluating we had to design such testing procedure that it would be possible to compare and evaluate the cutting ability of the selected cutting inserts used for tests. In today’s competitive global market, quality and precision is the most important parameter. Tight tolerances and urgent deadlines are normal. In the machine tool business, companies must keep their cutting edge, or your company will lose its competitive edge.

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Karandikar, Jaydeep M., Tony L. Schmitz, and Ali E. Abbas. "Spindle speed selection for tool life testing using Bayesian inference." Journal of Manufacturing Systems 31, no. 4 (October 2012): 403–11. http://dx.doi.org/10.1016/j.jmsy.2012.07.013.

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Fohn, Sara Lorene, Carol Mulvenon, and Susan F. McElroy. "Development and Testing of the End-of-Life Transfer Tool." Journal of Hospice & Palliative Nursing 19, no. 4 (August 2017): 363–67. http://dx.doi.org/10.1097/njh.0000000000000357.

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Alauddin, M., M. A. El Baradie, and M. S. J. Hashmi. "Tool-life testing in the end milling of Inconel 718." Journal of Materials Processing Technology 55, no. 3-4 (December 1995): 321–30. http://dx.doi.org/10.1016/0924-0136(95)02035-7.

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Schwarzwalder, Alison, Zephania Chilangwa, Ilesh Patel, Andrew Burke, and Matthew Lynch. "Testing a Tool to Scale Quality of Life Indicators in Tanzania." Field Methods 20, no. 2 (March 10, 2008): 179–90. http://dx.doi.org/10.1177/1525822x07313812.

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Tokarev, Denis Ivanovich, Andrey Alexandrovich Drozdov, Lyudmila Dmitrievna Sirotenko, Elena Vyacheslavovna Matygullina, and Timur Rizovich Ablyaz. "Comparative testing tool life in turning of composite plastic F-4К20." Metalloobrabotka, no. 2 (2019): 14–18. http://dx.doi.org/10.25960/mo.2019.2.14.

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Menyhart, Otília, Boglárka Weltz, and Balázs Győrffy. "MultipleTesting.com: A tool for life science researchers for multiple hypothesis testing correction." PLOS ONE 16, no. 6 (June 9, 2021): e0245824. http://dx.doi.org/10.1371/journal.pone.0245824.

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Scientists from nearly all disciplines face the problem of simultaneously evaluating many hypotheses. Conducting multiple comparisons increases the likelihood that a non-negligible proportion of associations will be false positives, clouding real discoveries. Drawing valid conclusions require taking into account the number of performed statistical tests and adjusting the statistical confidence measures. Several strategies exist to overcome the problem of multiple hypothesis testing. We aim to summarize critical statistical concepts and widely used correction approaches while also draw attention to frequently misinterpreted notions of statistical inference. We provide a step-by-step description of each multiple-testing correction method with clear examples and present an easy-to-follow guide for selecting the most suitable correction technique. To facilitate multiple-testing corrections, we developed a fully automated solution not requiring programming skills or the use of a command line. Our registration free online tool is available at www.multipletesting.com and compiles the five most frequently used adjustment tools, including the Bonferroni, the Holm (step-down), the Hochberg (step-up) corrections, allows to calculate False Discovery Rates (FDR) and q-values. The current summary provides a much needed practical synthesis of basic statistical concepts regarding multiple hypothesis testing in a comprehensible language with well-illustrated examples. The web tool will fill the gap for life science researchers by providing a user-friendly substitute for command-line alternatives.

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Han, Zhen Yu, Guang Нu Liu, and Hong Нa Fu. "A Review of Residual Life Prediction for Remanufacturing of Machine Tool." Applied Mechanics and Materials 552 (June 2014): 133–38. http://dx.doi.org/10.4028/www.scientific.net/amm.552.133.

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A growing concern about the environment problems, especially about the waste, carbon emissions and landfill, has spurred research into the field of remanufacturing. This paper mainly focuses on the residual life prediction in the remanufacturing of machine tools, which is an important step of remanufacturing process. A system analysis and synthesis is performed in the fields of testing data collection and data analysis and calculation, which are the two important components of residual life prediction. Some non-destructive testing technologies for data collection and some algorithms for data analysis are summarized and made comparison. In addition, this paper also aims at giving a perspective in such area in the future.

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El Baradie, M. A. "The effect of varying the workpiece diameter on the cutting tool clearance angle in tool-life testing." Wear 195, no. 1-2 (July 1996): 201–5. http://dx.doi.org/10.1016/0043-1648(95)06858-9.

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Klocke, Fritz, Christof Gorgels, Arne Stuckenberg, and Emmanouil Bouzakis. "Qualification of Coatings to Predict Wear Behavior of Micro Blasted Cutting Tools." Key Engineering Materials 438 (May 2010): 23–29. http://dx.doi.org/10.4028/www.scientific.net/kem.438.23.

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In today’s production engineering nearly every cutting tool is coated. In the field of coating technology and tool treatment blasting is a common way to increase tool life or hold it on a constant level for several reconditioning steps. The latest innovation referring blasting are micro blasted coatings. For this technology a parameter variation was examined and the consequential tool life was compared with common testing method for tool systems in order to qualify the coating treatment. The investigations were carried out using an aluminum and zirconium oxide as blasting abrasive and by varying the blasting parameters pressure and duration. Finally, the treatment led to an optimized tool wear behavior due to micro blasting of the coating and the wear behavior could be referenced against the testing methods.

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Sifa, Agus, Dedi Suwandi, Tito Endramawan, and Alam Aulia Rachman. "The Design and Implementation of Fan Chips as Cooling for Milling Process on Aluminum Alloy 5086 to Increase Tool Life." Current Journal: International Journal Applied Technology Research 2, no. 1 (May 21, 2021): 29–42. http://dx.doi.org/10.35313/ijatr.v2i1.43.

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In the metal machining process, especially in the milling process, the parameters that affect the quality milling process results are cooling media because it affects the tool life used. This paper aims to determine the performance of using fan chips as the coolant in the dry milling process area. The method used is the computational fluid dynamic (CFD) method and the experimental milling process on a workpiece made from aluminum alloy 5086. In experimental testing using a variation of the milling machine spindle rotation. The simulation test results on the fluid flow character on fan chips with a protector producing a central character with a small area. In contrast, fan chips without a protector make a central character with a broader area. The wind speed data in simulation testing and experimental testing produced the same trend graph. The results of the performance of fan chips after experimented with variations in spindle rotation, cooling process on area occurs when the motor spindle rotates above 1120 Rpm on the fan chips with a protector, and the engine spindle rotates above 770 Rpm on the fan chips without a protector. The effect of fan chips on tool life affects increasing tool life by 8 minutes on installing fan chips with a protector and increasing tool life by 12 minutes on installing fan chips without a protector.

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Astakhov, Viktor P., and Vasily V. Galitsky. "Tool life testing in gundrilling: an application of the group method of data handling (GMDH)." International Journal of Machine Tools and Manufacture 45, no. 4-5 (April 2005): 509–17. http://dx.doi.org/10.1016/j.ijmachtools.2004.09.003.

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LIAO, HAITAO, and ZHAOJUN LI. "MULTIOBJECTIVE DESIGN OF EQUIVALENT ACCELERATED LIFE TESTING PLANS." International Journal of Reliability, Quality and Safety Engineering 15, no. 06 (December 2008): 515–38. http://dx.doi.org/10.1142/s0218539308003209.

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This paper is focused on the multiobjective design of equivalent accelerated life test (ALT) plans. Equivalent ALT plans are expected to achieve the same statistical performance as a baseline ALT plan yet lead to other desired performance measures such as reduced test time and total cost. Before determining the desired multiobjective equivalent ALT plans, an efficient fast non-dominated sorting genetic algorithm (NSGA-II) is utilized to identify a set of Pareto optimal solutions. To handle a large number of Pareto optimal solutions, a self-organizing map (SOM) and data envelopment analysis (DEA) are sequentially applied to classify the Pareto solutions and reduce the size of the suggested solution set. This integrated approach allows for the tradeoff of information among the Pareto solutions and the reduction in the size of the solution set. It provides a useful tool for practitioners to make meaningful decisions in planning ALT experiments.

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Armenski, Goce, and Marjan Gusev. "Infrastructure for e-testing." Facta universitatis - series: Electronics and Energetics 18, no. 2 (2005): 181–204. http://dx.doi.org/10.2298/fuee0502181a.

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The characteristics of the society in which we live, where knowledge and the ways of its use are the most important in everyday life, brings new challenges for higher education. The extensive use of technology in learning and working is forcing its use in the assessment process. A lot of software packages exist in the market to realize automated assessment. In this article we analyze different methods used for testing and present new frontiers, especially in cases where the number of students is very big (several hundreds), and in cases in which students can take exams every month. Using the results from this analysis we have designed and developed a new assessment system. We also give a report of the results from using e-testing tool for assessment of student knowledge, concentrating on the effectiveness of it use for assessment purposes.

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BARBOSA, DANIEL L., HELTON S. LIMA, PATRICIA D. L. MACHADO, JORGE C. A. FIGUEIREDO, MAKELLI A. JUCÁ, and WILKERSON L. ANDRADE. "AUTOMATING FUNCTIONAL TESTING OF COMPONENTS FROM UML SPECIFICATIONS." International Journal of Software Engineering and Knowledge Engineering 17, no. 03 (June 2007): 339–58. http://dx.doi.org/10.1142/s0218194007003276.

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A method of functional testing for software components according to model-based testing techniques is proposed. Test cases are generated from UML diagrams and OCL constraints that comprise a component interface and realization specification. The method uses a reduced set of UML artifacts that constitute the main requirements for its application along with a component development process, making use of development artifacts. Also, the set of generated test artifacts are packed together with the provided components to reduce the overall testing effort when clients assemble applications. A tool has been developed to automate the method with test cases generated as Java test components. Test execution and result analysis is also supported. For each component, the tool generates a test component that can be easily upgraded and configured for testing the services provided by a component throughout its life cycle.

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Pinard, Joanie, Ruth Ann Vleugels, Cara Joyce, Joseph F. Merola, and Mital Patel. "Hidradenitis suppurativa burden of disease tool: Pilot testing of a disease-specific quality of life questionnaire." Journal of the American Academy of Dermatology 78, no. 1 (January 2018): 215–17. http://dx.doi.org/10.1016/j.jaad.2017.08.030.

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Wang, X. Y., S. Q. Pang, and Q. X. Yu. "Comparative Experimental Research on Cutting Superalloy Used New Coated Carbide Tools." Applied Mechanics and Materials 33 (October 2010): 173–76. http://dx.doi.org/10.4028/www.scientific.net/amm.33.173.

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The aim of this work is to investigate the machinability of new coated carbide cutting tools that are named C7 plus coatings under turning of superalloy GH2132. This achieved by analysis of tool life at different cutting conditions .Investigations of tool wear and tool life testing are intended to establish T-V formulas, and then analyzed the characteristics of coating . Through a series of comparative tests, Using TiAlN coatings as the contrast materialthe results show that the new coating tools that are named C7 plus coatings are suitable for cutting superalloy GH2132. The cutting speed and processing efficiency can be increased effectively.

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Renusch, Daniel, and Michael Schütze. "A Prototype Software Tool for Life Time Assessment of Thermal Barrier Coating Systems." Materials Science Forum 595-598 (September 2008): 151–58. http://dx.doi.org/10.4028/www.scientific.net/msf.595-598.151.

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The modeling equations used for spallation prediction are becoming increasingly more sophisticated due to the consideration of a wider range of thermal and thermo-mechanical loading conditions. Consequently, a software application would make such life time models more practical and may become a desired tool that both academic and applied researchers may want to use. As a starting point for further development a prototype software has been developed based on a simple phenomenological spallation analysis model. This software features a Windows based graphical user interface and works with other Windows applications, such as, Power Point, Excel or Origin. The software analyzes laboratory spallation life time data acquired from isothermal, thermal cyclic and/or burner rig testing and provides confidence limits and accuracy assessment of the analysis model. It further calculates the life time for a given bond coat temperature, temperature gradient across the coating, and thermal cycle frequency.

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Aldén, R., Z. Barsoum, T. Vouristo, and M. Al-Emrani. "Robustness of the HFMI techniques and the effect of weld quality on the fatigue life improvement of welded joints." Welding in the World 64, no. 11 (August 7, 2020): 1947–56. http://dx.doi.org/10.1007/s40194-020-00974-4.

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Abstract Robustness of HFMI treatment in different weld qualities according to ISO 5817 was studied, and fatigue testing of the treated samples was carried out in order to investigate the effect of the weld quality prior treatment. The results show that HFMI-treated welds with weld quality level D shows fatigue life improvements that fall within the IIW recommendations for HFMI. No significant influence from the HFMI operator or HFMI equipment on the fatigue life was found. However, the scatter in fatigue testing results varied with HFMI operator and indicated that different HFMI operators could produce consistent treatment results. A considerable effect on fatigue life from HFMI tool radius was found, where the 2-mm tool radius showed considerably greater fatigue life compared with the 1.5-mm tool radius. According to IIW (Marquis and Barsoum 2016), for steel grade SY = 700 MPa, the fatigue strength recommendation is FAT 160 (m = 5) for transverse stiffener–welded joints with as-welded quality B according to ISO 5817 (ISO/TC 44/SC 10 2011), prior to treatment. It can be observed in the current study that fatigue-tested HFMI-treated welded joints, welded with weld quality D, are in good agreement with the IIW recommendations.

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Ohno, Kanta, Kounosuke Tomori, Takashi Takebayashi, Tatsunori Sawada, Hirofumi Nagayama, William MM Levack, Kazuhisa Domen, and Toshio Higashi. "Development of a tool to facilitate real life activity retraining in hand and arm therapy." British Journal of Occupational Therapy 80, no. 5 (March 28, 2017): 310–18. http://dx.doi.org/10.1177/0308022617692602.

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Introduction Successful recovery of upper extremity function after stroke is more likely when the affected limb is used regularly in daily life. We developed an iPad (Apple) application called the ‘Aid for Decision-Making in Occupation Choice for Hand’ to facilitate daily upper extremity use. This study examined the suitability of items and pictures in the Aid for Decision-Making in Occupation Choice for Hand, and tested a paper prototype of the application (which has since been produced). Method We used a Delphi method with 10 expert occupational therapists to refine the items in the aid. Next, we prepared pictures of items in the aid and confirmed their suitability by testing them with 10 patients (seven stroke, three cervical spondylotic myelopathy). Nine occupational therapists conducted field tests with a paper prototype of the aid in clinical practice to examine its utility. Results After four Delphi rounds, we selected 130 items representing activities of daily living, organized into 16 categories. Of 130 pictures, 128 were recognizable to patients as representing the intended activities. Based on testing of the paper prototype, we found the Aid for Decision-Making in Occupation Choice for Hand process was suitable for clinical practice, and could be organized into six steps. Conclusion The Aid for Decision-Making in Occupation Choice for Hand process may promote daily upper extremity use. This application, since developed, now needs to be clinically tested in its digital form.

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Holzhausen, Martin, Adelheid Kuhlmey, and Peter Martus. "Individualized measurement of quality of life in older adults: development and pilot testing of a new tool." European Journal of Ageing 7, no. 3 (August 27, 2010): 201–11. http://dx.doi.org/10.1007/s10433-010-0159-z.

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de Boer, B., H. C. Beerens, S. M. G. Zwakhalen, F. E. S. Tan, J. P. H. Hamers, and H. Verbeek. "Daily lives of residents with dementia in nursing homes: development of the Maastricht electronic daily life observation tool." International Psychogeriatrics 28, no. 8 (March 23, 2016): 1333–43. http://dx.doi.org/10.1017/s1041610216000478.

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ABSTRACTBackground:Daily life is a dynamic and multidimensional concept, for which appropriate assessment tools are lacking. This study describes the development of the Maastricht Electronic Daily Life Observation tool (MEDLO-tool), a freely accessible, easy to use, electronic observation tool to assess relevant daily life aspects for nursing home residents with dementia.Methods:(1) Determining relevant aspects of daily life for nursing home residents with dementia based on a literature search and expert interviews; (2) pilot testing observation procedures and operationalizations of the aspects of daily life; and (3) exploring inter-rater reliability and feasibility of the tool in a nursing home facility with 16 residents (56% female, mean age: 77).Results:The following aspects of daily life are assessed with the MEDLO-tool: (1) activity (activity performed by resident, engagement in this activity, and the degree of physical effort); (2) physical environment (location of the resident and interaction with the physical environment); (3) social interaction (the level and type of social interaction, and with whom this social interaction took place); and (4) emotional well-being (mood and agitation). Each aspect of daily life is observed and scored using standardized scoring options. Agreement on the aspects is high with an average absolute agreement of 86%. Users of the MEDLO-tool indicated that it was feasible in practice and contained clear operationalization of the aspects of daily life.Conclusions:The MEDLO-tool is a promising tool to gain real time insight into the aspects of the daily lives of nursing home residents with dementia.

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Jakubéczyová, Dagmar, Daniela Kalincová, and Rudolf Kaštan. "Testing of PVD Hard Coatings Applied to Coining Dies." Materials Science Forum 818 (May 2015): 27–31. http://dx.doi.org/10.4028/www.scientific.net/msf.818.27.

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The requirements on tools used in the production of coins include high quality and reliability, dependent on the materials from which they are made, on manufacturing technology, heat treatment and final operations achieving functional area modification. Properties of the material of coins vary during their production and there is the so-called operational degradation that can be caused by an inappropriate technology of manufacturing. The quality of coining dies is expressed as their service life which ranges from approximately one hundred thousand to one million pieces of coins produced. Therefore, it is necessary to pay enough attention to the service life of coining dies. Surface treatment in the form of the application of hard PVD coatings is one of the ways of increasing the durability of coining die.In the present study, we analysed and tested three types of coatings deposited onto coining dies made of tool steel.

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Moreno Sancho, Federico, Georgios Tsakos, David Brealey, David Boniface, and Ian Needleman. "Development of a tool to assess oral health-related quality of life in patients hospitalised in critical care." Quality of Life Research 29, no. 2 (October 26, 2019): 559–68. http://dx.doi.org/10.1007/s11136-019-02335-1.

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Abstract Aims and objectives Oral health deteriorates following hospitalisation in critical care units (CCU) but there are no validated measures to assess effects on oral health-related quality of life (OHQoL). The objectives of this study were (i) to develop a tool (CCU-OHQoL) to assess OHQoL amongst patients admitted to CCU, (ii) to collect data to analyse the validity, reliability and acceptability of the CCU-OHQoL tool and (iii) to investigate patient-reported outcome measures of OHQoL in patients hospitalised in a CCU. Methods The project included three phases: (1) the development of an initial questionnaire informed by a literature review and expert panel, (2) testing of the tool in CCU (n = 18) followed by semi-structured interviews to assess acceptability, face and content validity and (3) final tool modification and testing of CCU-OHQoL questionnaire to assess validity and reliability. Results The CCU-OHQoL showed good face and content validity and was quick to administer. Cronbach’s alpha was 0.72 suggesting good internal consistency. For construct validity, the CCU-OHQoL was strongly and significantly correlated (correlation coefficients 0.71, 0.62 and 0.77, p < 0.01) with global OHQoL items. In the validation study, 37.8% of the participants reported a deterioration in self-reported oral health after CCU admission. Finally, 26.9% and 31% of the participants reported considerable negative impacts of oral health in their life overall and quality of life, respectively. Conclusions The new CCU-OHQoL tool may be of use in the assessment of oral health-related quality of life in CCU patients. Deterioration of OHQoL seems to be common in CCU patients.

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Fleming, Richard, Kirsty Bennett, Terri Preece, and Lyn Phillipson. "The development and testing of the dementia friendly communities environment assessment tool (DFC EAT)." International Psychogeriatrics 29, no. 2 (November 8, 2016): 303–11. http://dx.doi.org/10.1017/s1041610216001678.

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ABSTRACTBackground:There is a growing recognition of the need to make the built environment in towns and cities more enabling for people with dementia. This study reports the development of a reliable tool to assess the support provided to people with dementia by public and commercial buildings such as council offices, supermarkets, banks, and medical centers as they approach, use, and leave them.Methods:A three-step process was carried out to develop and establish the reliability of the tool: (1) a review of principles and available tools informed the development and modification of an environmental audit tool of proven utility, (2) the draft tool was subjected to an iterative process of evaluation by a team of people with expertise in design and town planning, people with dementia and their carers, (3) inter-rater reliability and internal consistency were assessed on a sample of 60 public and commercial buildings.Results:The review of available tools led to the drafting of a tool that was refined through iterative, experience-based evaluation resulting in a tool that has high inter-rater reliability and internal validity. The data gathered enabled a sample of banks, libraries, shops, medical facilities, supermarkets and council offices to be compared.Conclusions:The new tool aids the collection of reliable information on the strengths and weaknesses of public and commercial buildings. This information is likely to be of use in the refurbishment of these buildings to improve their support of people with dementia as they use them in their daily life.

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Knapik, Andrzej. "Assessing the Quality of Aging - Presentation of Research Tool." Physiotherapy and Health Activity 22, no. 1 (February 1, 2014): 42–47. http://dx.doi.org/10.1515/pha-2015-0007.

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Abstract Background: The analysis of demographic tendencies indicates a continuing process of extending life expectancy in numerous societies. Alongside the decline in fertility, the continuing process of extending life expectancy is the primary cause for the aging of societies. An increasing percentage of the elderly require defining the welfare among older people and its factors. Aim: This article presents various views on successful aging and introduces the authorial Successful Aging Index model, which was the basis for a questionnaire diagnosing the quality of aging. The author’s intention was to create a diagnostic tool for said process. Conclusions: Presented tool according to the author can be very useful for diagnosing the course of successful aging. However, this requires additional empirical testing.

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Redmond, Stephanie, Nicole Paterson, Sarah J. Shoemaker-Hunt, and Djenane Ramalho-de-Oliveira. "Development, Testing and Results of a Patient Medication Experience Documentation Tool for Use in Comprehensive Medication Management Services." Pharmacy 7, no. 2 (June 20, 2019): 71. http://dx.doi.org/10.3390/pharmacy7020071.

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The medication experience is an individual’s subjective experience of taking a medication in daily life and can be at the root of drug therapy problems. It is recommended that the patient-centered approach to comprehensive medication management (CMM) starts with an understanding of the patient’s medication experience. This study aims to develop a medication experience documentation tool for use in CMM services, and to understand the usefulness and challenges of using the tool in practice. The tool was developed based on previous research on patients’ medication experiences. It was tested in two rounds by ten CMM pharmacists utilizing the tool as they provided care to patients. Focus groups were conducted to revise the tool after each round and to understand pharmacists’ experiences. The tool was tested for 15 weeks in 407 patient encounters. There was at least one medication experience documented in the electronic medical record 62% of the time. Pharmacists found the tool helpful in raising awareness of the medication experience and motivational interviewing strategies, planning for follow-up visits, as a teaching tool, and making pharmacists realize the fluidity of the medication experience. The tool offered pharmacists a better way to recognize and address medication experiences affecting medication taking behaviors.

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Pinka, Richard. "Development the tool for demand control ventilation systems elements design and their impact to building life-cycle assessment: a review." MATEC Web of Conferences 146 (2018): 01013. http://dx.doi.org/10.1051/matecconf/201814601013.

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The paper describes possible methodology for DCV – demand control ventilation design process which will lead to solving the most important problems of more accurate ventilation system design, the efficiency: time and costs of design while improving its effectivity (level of design confidence, degree of uncertainty, financial parameters). For this purpose it has been started developing the tool implementing the methodology. Furthermore, it describes steps of testing and validation design process by implementation state-of-the-art algorithms for measuring the occupancy or CO2 detection for DCV system control testing sites and their comparison with computation design results. It describes also the reasons and necessity of decomposition of whole ventilation system to specific elements for the design and assessment procedure.

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Mahmood, Hamid, Ammara Waqar, Syed Amir Gilani, Muhammad Yaqoob, Ejaz Mahmood Ahmad Qureshi, Saleem Rana, Asif Hanif, and Awais Gohar. "Development, Testing of Construct Validity and Reliability of Pakistan Senior Citizens Quality of Life- Measurement Tool (PSCQL-MT)." American Journal of Biomedical and Life Sciences 8, no. 5 (2020): 156. http://dx.doi.org/10.11648/j.ajbls.20200805.15.

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Dobratz, Marjorie C. "The life closure scale: Additional psychometric testing of a tool to measure psychological adaptation in death and dying." Research in Nursing & Health 27, no. 1 (January 21, 2004): 52–62. http://dx.doi.org/10.1002/nur.20003.

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Shore, Linda, Valerie Power, Bernard Hartigan, Samuel Schülein, Eveline Graf, Adam de Eyto, and Leonard O’Sullivan. "Exoscore: A Design Tool to Evaluate Factors Associated With Technology Acceptance of Soft Lower Limb Exosuits by Older Adults." Human Factors: The Journal of the Human Factors and Ergonomics Society 62, no. 3 (August 16, 2019): 391–410. http://dx.doi.org/10.1177/0018720819868122.

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Objective This pilot study proposed and performs initial testing with Exoscore, a design evaluation tool to assess factors related to acceptance of exoskeleton by older adults, during the technology development and testing phases. Background As longevity increases and our aging population continues to grow, assistive technologies such as exosuits and exoskeletons can provide enhanced quality of life and independence. Exoscore is a design and prototype stage evaluation method to assess factors related to perceptions of the technology, the aim being to optimize technology acceptance. Method In this pilot study, we applied the three-phase Exoscore tool during testing with 11 older adults. The aims were to explore the feasibility and face validity of applying the design evaluation tool during user testing of a prototype soft lower limb exoskeleton. Results The Exoscore method is presented as part of an iterative design evaluation process. The method was applied during an exoskeleton research and development project. The data revealed the aspects of the concept design that rated favorably with the users and the aspects of the design that required more attention to improve their potential acceptance when deployed as finished products. Conclusion Exoscore was effectively applied to three phases of evaluation during a testing session of a soft exoskeleton. Future exoskeleton development can benefit from the application of this design evaluation tool. Application This study reveals how the introduction of Exoscore to exoskeleton development will be advantageous when assessing technology acceptance of exoskeletons by older adults.

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Putra, Fadliansyah, and Taufik Rizaldi. "Application of Color Sensor in the Determination of Tomato Fruit Ripeness (Solanum Lycopersicum, L) in Gravitation Type Fruit Sorting Tool (Gravitation Type)." Indonesian Journal of Agricultural Research 2, no. 1 (April 13, 2019): 13–20. http://dx.doi.org/10.32734/injar.v2i1.862.

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Sortation is an important step in handling post-harvest fruits to extend the shelf life and increase the selling value. A tool that is able to sort quickly is needed to speed up the sortation process. Therefore, design of fruit sortationtool using gravitation type and technology to determine fruit ripeness is needed. This study aimed to design and fabricate fruit sorting tool based on the fruit size that could help farmers in sorting fruit. The performance testing was conducted using tomatoes. The results of the design shows that this tool could accommodate 12 kg (equal to 60 tomatoes) of fruit. Tool performance testing shows that this tool could work effectively on a slope of 12˚ withan effective capacity of 133.1 kg/hour (80%). Damage analysis showed that the ripe fruit was more susceptible to damage than the half-ripe fruit due to the fact that half-ripe fruit was still hard, so that the percentage of the damage analysis in ripe fruit was 23.3% and half-ripewas 10%.

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PARATE, Bhupesh Ambadas, Sunil CHANDEL, and Himanshu SHEKHAR. "Design Analysis of Closed Vessel for Power Cartridge Testing." Problems of Mechatronics Armament Aviation Safety Engineering 10, no. 1 (March 31, 2019): 25–48. http://dx.doi.org/10.5604/01.3001.0013.0794.

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This paper discusses the design analysis of closed vessel (CV) for power cartridge application in water-jet disruptor. In this article, various design theories are presented in which the vessel is subjected to internal pressure. CV is a kind of pressure vessel utilized to evaluate the performance of power cartridge used for water-jet application. It is a test vessel which generates pressure - time profile by burning the propellant. Energy derived from burning of the propellant of power cartridge aids in neutralizing Improvised Devices (IED's). This energy creates high water-jet plume in the disruptor. In order to evaluate various performance parameters of the cartridge, CV design plays a vital role in the research and development activities, including, development, life trials, production, lot proof trials and life extension / life revision trials. CV is one of the methodologies / techniques from which energy generated is measured in terms of the maximum pressure (Pmax) and the time to maximum pressure (TPmax). This paper also discusses about various design aspects using the finite element method (FEM) and their comparative results with different design theories. In the light of these theoretical, numerical, and experimental works, it was recommended that octahedral stress theory or van Mises theory should be used for vessel design. This satisfies the designer requirements. FEM analysis tool helps in reducing time & development cost.

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Yang, Zhaojun, Xiaoxu Li, Chuanhai Chen, Hongxun Zhao, Dingyu Yang, Jinyan Guo, and Wei Luo. "Reliability assessment of the spindle systems with a competing risk model." Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability 233, no. 2 (April 23, 2018): 226–34. http://dx.doi.org/10.1177/1748006x18770343.

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Traditional reliability assessment of spindle systems of machine tools suffers from long testing time and high cost. Accelerated life testing is an alternative that overcomes the shortcomings of traditional reliability testing. In a life testing, identification of critical factors of service life and an accurate model are important. Based on the characteristic analysis and engineering experience, four reliability factors, which are the average power of spindle systems, the number of tool changing, the number of spindles restarting and environment temperature, are selected as accelerating environment variables. An accelerated failure time model is used to describe the inverse relationship between the variables and reliability for the catastrophic failure mode and the degradation failure mode separately. Then a competing risk model is built by considering competing risks of two modes. Parametric reliability models are proposed to capture the statistical independency and dependency separately, in which the Gumbel–Hougaard copula function is used to establish the joint cumulative distribution for dependency. Thereby the hypothesis testing is developed to determine the failure modes dependency. The reliability sensitivity of each environment variable is analyzed. Finally, the proposed model is illustrated with a real field case study.

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Kashouty, Rennie, and Ghazy. "Tool Life Performance of Injection Mould Tooling Fabricated by Selective Laser Melting for High-Volume Production." Materials 12, no. 23 (November 26, 2019): 3910. http://dx.doi.org/10.3390/ma12233910.

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Rapid Tooling processes are developing and proving to be a reliable method to compete with subtractive techniques for tool making. This paper investigates large volume production of components produced from Selective Laser Melting (SLM) fabricated injection moulding tool inserts. To date, other researchers have focused primarily on investigating the use of additive manufacturing technology for injection moulding for low-volume component production rather than high volume production. In this study, SLM technology has been used to fabricate four Stainless Steel 316L tool inserts of a similar geometry for an after-market automotive spare part. The SLM tool inserts have been evaluated to analyse the maximum number of successful injections and quality of performance. Microstructure inspection and chemical composition analysis have been investigated. Performance tests were conducted for the four tool inserts before and after injection moulding in the context of hardness testing and dimensional accuracy. For the first reported time, 150,000 injected products were successfully produced from the four SLM tool inserts. Tool inserts performance was monitored under actual operating conditions considering high-level demands. In the scope of this research, SLM proved to be a dependable manufacturing technique for most part geometries and an effective alternative to subtractive manufacturing for high-volume injection moulding tools for the aftermarket automotive sector.

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Hu, Wei, Kai Zeng, Xiao Cong He, Gang Wei Cui, Sheng Wan Yuan, and En Liu. "The Application of Performance Degradation Analysis in Machine Tool Spindle." Applied Mechanics and Materials 713-715 (January 2015): 585–88. http://dx.doi.org/10.4028/www.scientific.net/amm.713-715.585.

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As a key part feature of the machine, machine tool spindle has the characteristics of high reliability and high precision. The traditional test methods used to short the test cycle and analyze failure life of small sample data are inappropriate. Firstly, the reliability testing system of machine tool spindle was expounded; then, research status and the statistical analysis method of the performance degradation analysis used in the reliability test of machine tool spindle system were expounded. The influence to the credibility of the reliability test for machine tool spindle was put forward and analyzed: stress selection, feature selection, failure threshold selection and small sample analysis. Accelerated degradation test was given for further research in the reliability test for machine tool spindle.

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Grigoriev, Sergey, Alexey Vereschaka, Alexander Metel, Nikolay Sitnikov, Filipp Milovich, Nikolay Andreev, Svetlana Shevchenko, and Yulia Rozhkova. "Investigation into Performance of Multilayer Composite Nano-Structured Cr-CrN-(Cr0.35Ti0.40Al0.25)N Coating for Metal Cutting Tools." Coatings 8, no. 12 (December 6, 2018): 447. http://dx.doi.org/10.3390/coatings8120447.

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This paper deals with the Cr-CrN-(Cr0.35Ti0.40Al0.25)N coating. It has a three-layered architecture with a nano-structured wear-resistant layer. The studies involved the investigation into the microstructure (with the use of SEM and TEM), elemental and phase composition (XRD and SAED patterns), wear process pattern in scratch testing, crystal structure, as well as the microhardness of the coating. Cutting tests of tools with the above coating were carried out in dry turning of steel 1045 at cutting speeds of vc = 200, 250, and 300 m·min−1. The comparison included uncoated tools and tools with the commercial TiN and (Ti,Al)N coatings with the same thickness. The tool with the Cr-CrN-(Cr0.35Ti0.40Al0.25)N coating showed the longest tool life at all the cutting speeds under consideration. Meanwhile, a tool with the coating under study can be recommended for use in turning constructional steel at the cutting speed of vc = 250 m·min−1. At this cutting speed, a tool shows the combination of a rather long tool life and balanced wear process, without any threat of catastrophic wear.

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Lathwal, Ashish. "A Literature Review on Automation Testing Using Selenium+Sikuli." International Journal of Distributed Artificial Intelligence 11, no. 2 (July 2019): 35–40. http://dx.doi.org/10.4018/ijdai.2019070104.

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Automation testing is a methodology that uses an application to implement the entire life cycle of the software in less time and provides efficiency and effectiveness to the testing software. In automation testing, the tester writes scripts and uses any suitable application software to test the software application. Automation is basically an automated process that is comprised of lots of manual activities. In other words, automation testing uses automation tools like Selenium, Sikuli, Appium, etc., to write test script and execute test cases, with no or minimal manual involvement required while executing an automated test suite. Usually, automation testers write test scripts and test cases using any of the automation tool and then groups test several cases. Here, we will discuss a neat case study explaining the automation testing using a hybrid test script.

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Lin, Xinhao, Yazhou Xu, Hui Zhang, Qianqian Ren, and Junqi Yu. "Numerical estimation of fretting fatigue life of bolted joints using continuum damage mechanics and SEAM Tool." Advances in Structural Engineering 23, no. 11 (April 24, 2020): 2486–99. http://dx.doi.org/10.1177/1369433220911155.

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For fretting fatigue, micro-slipping often causes initial micro-cracks in the contact surfaces, which gradually propagate and eventually result in fracture failure. However, it is difficult to directly observe and measure the crack initiation and propagation processes of single-lap bolted joints due to the obstacle of testing technique. Therefore, this article presents an elastic analysis–based method, in which the total fretting fatigue lifetime is divided into initiation life predicted by continuum damage mechanics and propagation life calculated by SEAM Tool in combination with Paris’s law. Since the initiation life model implicitly reflects the result of damage process, one can directly calculate the initiation life based on the elastic stress analysis. The predicted fretting fatigue life, initial crack location, and propagation path are in reasonable agreement with the fretting fatigue test and scanning electron microscope observation results. In addition, it is found that among the main factors affecting fretting fatigue of steel single-lap bolted joints, the initial life is affected by cyclic stress, friction coefficient, and tightening torque, and the propagation path is mainly influenced by tightening torque.

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Zaharia, Sebastian Marian, Camil Lancea, Lucia Antoneta Chicoș, and Giampaolo Caputo. "Behaviour and Mean Life Prediction of Solar Mirrors from Parabolic Trough Collectors under Accelerated Degradation/Reliability Testing." Applied Mechanics and Materials 656 (October 2014): 442–49. http://dx.doi.org/10.4028/www.scientific.net/amm.656.442.

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The scope of this paper is focuses on the study of the behaviour and of the mean life of materials (solar mirrors from parabolic - trough collectors) from the field of renewable energies, using accelerated degradation/reliability testing. This paper is focused on influence of environmental factors (temperature, humidity, UV and salt spray) at mean life of solar mirrors from parabolic - trough collectors under accelerated testing conditions. In today’s highly competitive environment, companies are pressured to shorten their development cycles, reduce development costs and produce highly reliable products. Accelerated reliability/durability tests are a very powerful tool in achieving these goals, providing the means to observe failures more rapidly under higher-stress operating conditions while accurately predicting reliability under normal operating conditions.

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Soeteman, Djøra I., Stephen C. Resch, Hawre Jalal, Caitlin M. Dugdale, Martina Penazzato, Milton C. Weinstein, Andrew Phillips, et al. "Developing and Validating Metamodels of a Microsimulation Model of Infant HIV Testing and Screening Strategies Used in a Decision Support Tool for Health Policy Makers." MDM Policy & Practice 5, no. 1 (January 2020): 238146832093289. http://dx.doi.org/10.1177/2381468320932894.

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Background. Metamodels can simplify complex health policy models and yield instantaneous results to inform policy decisions. We investigated the predictive validity of linear regression metamodels used to support a real-time decision-making tool that compares infant HIV testing/screening strategies. Methods. We developed linear regression metamodels of the Cost-Effectiveness of Preventing AIDS Complications Pediatric (CEPAC-P) microsimulation model used to predict life expectancy and lifetime HIV-related costs/person of two infant HIV testing/screening programs in South Africa. Metamodel performance was assessed with cross-validation and Bland-Altman plots, showing between-method differences in predicted outcomes against their means. Predictive validity was determined by the percentage of simulations in which the metamodels accurately predicted the strategy with the greatest net health benefit (NHB) as projected by the CEPAC-P model. We introduced a zone of indifference and investigated the width needed to produce between-method agreement in 95% of the simulations. We also calculated NHB losses from “wrong” decisions by the metamodel. Results. In cross-validation, linear regression metamodels accurately approximated CEPAC-P-projected outcomes. For life expectancy, Bland-Altman plots showed good agreement between CEPAC-P and the metamodel (within 1.1 life-months difference). For costs, 95% of between-method differences were within $65/person. The metamodels predicted the same optimal strategy as the CEPAC-P model in 87.7% of simulations, increasing to 95% with a zone of indifference of 0.24 life-months ( ∼ 7 days). The losses in health benefits due to “wrong” choices by the metamodel were modest (range: 0.0002–1.1 life-months). Conclusions. For this policy question, linear regression metamodels offered sufficient predictive validity for the optimal testing strategy as compared with the CEPAC-P model. Metamodels can simulate different scenarios in real time, based on sets of input parameters that can be depicted in a widely accessible decision-support tool.

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Sorbello, Alfred, Anna Ripple, Joseph Tonning, Monica Munoz, Rashedul Hasan, Thomas Ly, Henry Francis, and Olivier Bodenreider. "Harnessing scientific literature reports for pharmacovigilance." Applied Clinical Informatics 26, no. 01 (2017): 291–305. http://dx.doi.org/10.4338/aci-2016-11-ra-0188.

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Summary Objectives: We seek to develop a prototype software analytical tool to augment FDA regulatory reviewers’ capacity to harness scientific literature reports in PubMed/MEDLINE for pharmacovigilance and adverse drug event (ADE) safety signal detection. We also aim to gather feedback through usability testing to assess design, performance, and user satisfaction with the tool. Methods: A prototype, open source, web-based, software analytical tool generated statistical disproportionality data mining signal scores and dynamic visual analytics for ADE safety signal detection and management. We leveraged Medical Subject Heading (MeSH) indexing terms assigned to published citations in PubMed/MEDLINE to generate candidate drug-adverse event pairs for quantitative data mining. Six FDA regulatory reviewers participated in usability testing by employing the tool as part of their ongoing real-life pharmacovigilance activities to provide subjective feedback on its practical impact, added value, and fitness for use. Results: All usability test participants cited the tool’s ease of learning, ease of use, and generation of quantitative ADE safety signals, some of which corresponded to known established adverse drug reactions. Potential concerns included the comparability of the tool’s automated literature search relative to a manual ‘all fields’ PubMed search, missing drugs and adverse event terms, interpretation of signal scores, and integration with existing computer-based analytical tools. Conclusions: Usability testing demonstrated that this novel tool can automate the detection of ADE safety signals from published literature reports. Various mitigation strategies are described to foster improvements in design, productivity, and end user satisfaction.

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Tupper, Susan M., JoAnn Nilson, Jennifer King, Pamela Downe, Nancy Hodgson, Tara Schlosser, and Kelsey Brose. "Development and clinical feasibility testing of the Pain Treatment Planning Questionnaire." Journal of Haemophilia Practice 7, no. 1 (June 8, 2020): 12–24. http://dx.doi.org/10.17225/jhp00155.

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AbstractBackgroundChronic pain is common in people with bleeding disorders and can complicate clinical management, impair quality of life, and contribute to disability. People living with bleeding disorders often seek advice on pain management from the bleeding disorder treatment team; however, lack of condition-specific assessment tools to guide clinical communication about pain are a barrier to care.AimsTo develop and examine the clinical feasibility of a patient-reported outcome (PRO) tool designed to facilitate pain assessment and support clinical communication about pain for adults attending outpatient bleeding disorder clinics.MethodsTool development involved patient cognitive interviews and item refinement by a multidisciplinary clinician and patient working group. Clinical feasibility of the tool was evaluated with a survey of a small clinical sample in an outpatient bleeding disorder clinic. The Pain Treatment Planning Questionnaire (PTPQ) contains 28 items on the pain experience and treatments used to manage or prevent pain.ResultsParticipants completing the feasibility testing (n=42, 62% male) reported mild mean pain scores (usual pain μ=2.4, SD=2.0) with the majority (57.1%) reporting persistent pain in the past 30 days. Median PTPQ completion time was five to seven minutes and mean item response rate was 95.2%. The majority (95.2%) of participants found the questionnaire easy to understand, reported no difficulty understanding items, and recommended no changes to the questionnaire.ConclusionsPreliminary testing among a small sample in a clinical setting suggests that the PTPQ is a clinically feasible, acceptable, condition-specific PRO pain assessment tool for adult patients with bleeding disorders. Further testing is required to determine if the PTPQ affects treatment decision-making and patient outcomes.

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Unterberg, Martin, Joachim Stanke, Daniel Trauth, and Thomas Bergs. "A time series classification approach to non-destructive hardness testing using magnetic Barkhausen noise emission." Production Engineering 15, no. 3-4 (March 16, 2021): 509–17. http://dx.doi.org/10.1007/s11740-021-01034-6.

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AbstractThe process setup of manufacturing processes is generally knowledge-based and carried out once for a material batch. Industry experts observe fluctuations in product quality and tool life, albeit the process setup remains unchanged. These fluctuations are mainly attributed to fluctuations in material parameters. An in-situ detection of changes in material parameters would enable manufacturers to adapt process parameters like forces or lubrication before turbulences like unexpectedly high tool wear or degradation in product quality occurs. This contribution shows the applicability of a deep learning time series classification architecture that does not rely on handcrafted feature engineering for the classification of hardness fluctuations in a sheet-metal coil using magnetic Barkhausen noise emission. This methodology is not limited to the detection of hardness fluctuations in sheet-metal coils and can potentially be applied for the in-situ material property classification in different manufacturing processes and for different material parameters.

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Raeis Hosseiny, Seyed Aydin, and Johnny Jakobsen. "Fatigue damage simulation of tension-tension loaded glass/polyester fiber composites with thickness tapering effects." Journal of Composite Materials 53, no. 3 (June 18, 2018): 297–314. http://dx.doi.org/10.1177/0021998318783036.

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This study evaluates the capability of a progressive damage method in predicting the fatigue failure in glass/polyester fiber composite materials. Residual material properties in different failure modes have been obtained from testing fatigue-loaded specimens to their ultimate limits. A numerical tool utilizes the experimentally obtained values to simulate the process of damage in more complex models with high interlaminar shear stresses. The tool accounts for fatigue damage through stiffness and strength degradation rules without relying on prior calibration/modifications. Benchmark ply-drop problems under constant and variable amplitude fatigue loadings are simulated and compared against experimental results. Verification case studies show that the numerical tool can predict damage initiation and final fatigue life, successfully.

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Suh, Chul, Jeffrey L. Y. Lee, David W. Fowler, and Kenneth H. Stokoe. "Superaccelerated Pavement Testing on Full-Scale Concrete Slabs." Transportation Research Record: Journal of the Transportation Research Board 1940, no. 1 (January 2005): 112–24. http://dx.doi.org/10.1177/0361198105194000113.

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Several full-scale rigid pavement slabs were constructed and tested under constant cyclic loading for fatigue. To provide the comparable maximum applied stress to number of cycles to failure ( S-N) relationships for the full-scale field slabs, laboratory beam fatigue testing was conducted before field testing with the use of the same concrete mix designs. The superaccelerated pavement testing technique that was developed at the University of Texas was used in the field. The stationary dynamic deflectometer (SDD) was used to load the full-scale concrete slabs. To monitor the response of the rigid pavements, accelerometers and linear variable differential transformers were installed, and dynamic and permanent displacements of slabs were recorded during the entire testing period. All test slabs reached fatigue failure under the interior loading configuration using the SDD. This field loading system was found to be a practical and effective tool for testing the full-scale rigid pavement system. During fatigue loading, cracks began at the bottom of the slabs at the loading locations and propagated along the bottom of the slab centerline, which was the maximum stress path. Vertical crack propagation at the edge and stress redistribution occurred for the part of the slab's fatigue life. The concept of equivalent fatigue life was applied to correct the effect of the different stress ratios between the field and the laboratory testing. The laboratory beams and full-scale field slabs showed an almost identical S-N relationship after the correction for the variance of stress ratio.

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Johnson, Paula, David J. W. Evans, and Zulaikha Khan. "Testing technology to enhance patient safety in seclusion." Journal of Intellectual Disabilities and Offending Behaviour 8, no. 1 (March 13, 2017): 28–33. http://dx.doi.org/10.1108/jidob-09-2016-0016.

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Purpose The purpose of this paper is to evaluate whether an example of Seclusion Room Contactless Monitoring Technology (VitalGuardTM) is able to accurately detect the presence of life in a ward seclusion room ensuring patient wellbeing, without interference from background “living noise” (e.g. voices) or “electronic noise” (e.g. other systems). Design/methodology/approach The authors assessed the system’s ability to monitor movement caused by human respiration through its ability to discriminate false positives (i.e. presence of an inanimate object ± movement or noise, in the absence of a person in the seclusion room) and false negatives (i.e. failure to detect a human presence) in a ward setting. Findings The system displayed 100 per cent validity in terms of determining false positives (six conditions, each n=5) and the system did not alarm under either of the two false negative conditions tested (each n=5). Research limitations/implications These findings demonstrate that this example of technology is able to monitor movement caused by human respiration and can accurately and reliably detect the presence of life in seclusion rooms, in the ward setting, without interference from background noise (living and electronic). This was a small evaluation study and further research on its effectiveness in practice would be beneficial in both the intellectual disability forensic setting and other settings of segregation and isolation. Originality/value This study suggests that the use of technology in a seclusion room setting can be used as a reliable tool to enhance patient observations and assist in the delivery of care in a safe and unobtrusive manner.

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Qamar, Sayyad Zahid. "Heat Treatment and Mechanical Testing of AISI H11 Steel." Key Engineering Materials 656-657 (July 2015): 434–39. http://dx.doi.org/10.4028/www.scientific.net/kem.656-657.434.

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Belonging to the class of chromium tool steels, AISI H11 possesses very good toughness and hardness, and is therefore suitable for hot metalforming jobs performed at very high loads. Mostly used in fabrication of helicopter rotor blades, H11 also has great potential as a die steel in hot-work forging and extrusion. This alloy steel can be heat treated to increase the service life and dimensional accuracy of the die and tooling. Main aim of the current investigation was to formulate an optimum heat treatment strategy for H11 steel, especially for hot work applications. High-speed milling and electric discharge machining were used to fabricate samples for tensile and impact testing. After various types of heat treatment (annealing, austenitizing, air cooling or oil quenching, single and double tempering), these samples were tested for hardness, toughness (impact), yield strength, tensile strength, and ductility. Microstructural analysis was also performed to analyze the effect of heat treatment on mechanical properties. As tempering temperature increases, hardness initially increases and then starts to gradually decrease; impact strength first decreases and then increases; and yield strength exhibits a fluctuating pattern of initial decline followed by an increase and another decrease. Even though H11 steel is highly suitable for both hot and cold-work, it is surprisingly not a common choice for metalworking dies and tools. Results presented here can encourage die designers and hot-work practitioners to explore the versatility of this tool steel, and to adopt appropriate heat treatment strategies for different applications.

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Azevedo, Daniel, Bernardete Ribeiro, and Alberto Cardoso. "Prediction of the Remaining Useful Life of Aircraft Systems via Web Interface." International Journal of Online and Biomedical Engineering (iJOE) 16, no. 04 (April 8, 2020): 23. http://dx.doi.org/10.3991/ijoe.v16i04.11873.

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In this work a web-based tool is presented for the simulation of a Prognostics and Health Management (PHM) system used for exploring and testing different machine learning experimental scenarios with the goal of predicting the Remaining Useful Life (RUL) of aircraft systems. With this tool, the user can select a set of options like the datasets to use, its size, the machine learning method to apply for the RUL prediction and the metrics used for comparing the results. The proposed datasets correspond to public data extracted from a model which aims to simulate a Turbofan Engine dataset of an aircraft. Also, three different State of the Art machine learning techniques are made available to be applied and tested: a Similarity-based, a Neural Network-based and an Extrapolation-based approach. The results obtained by the different approaches can be graphically compared in the web interface. As the methods are executed remotely, the user incurs no computational costs, which constitutes an advantage of using this tool. This web tool aims to be a user-friendly interface used for simulating online experiments regarding the RUL prediction.

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Boone, Anna E., and Lorrie A. George-Paschal. "Feasibility testing of the Occupational Adaptation Practice Guide." British Journal of Occupational Therapy 80, no. 6 (March 8, 2017): 368–74. http://dx.doi.org/10.1177/0308022616688018.

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Introduction The theory of occupational adaptation was articulated with an emphasis on client-centered and occupation-based practice. The Occupational Adaptation Practice Guide is an instrument designed to facilitate therapists’ application of this theory in evaluation and treatment planning to influence clients’ internal occupational adaptation and participation in daily life. Method The purpose of this study was to trial the instrument and to assess percentage of agreement and perceived feasibility of the Occupational Adaptation Practice Guide in an inpatient rehabilitation setting. Eight therapists completed the Occupational Adaptation Practice Guide according to a videoed case study for evaluation of percentage of agreement. Each therapist then administered the guide to separate clients and subsequently completed an open-ended questionnaire to assess acceptability and practicality feasibility. Results Percentage of agreement was 100% for motor control, perception and environmental ratings, with the cognition and psychosocial ratings each at 75%. Themes gathered from qualitative data revealed perceptions of the instrument as comprehensive and efficient. Conclusion The instrument was reported to be an efficient, thorough tool that facilitated the use of the theory of occupational adaptation.

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Journal articles on the topic 'Tool-life testing'

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