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Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Technological and non-destructive testing methods"

1

Peta, Katarzyna, Jan Żurek, and Adam Patalas. "Non-destructive testing of automotive heat exchangers." MATEC Web of Conferences 244 (2018): 03007. http://dx.doi.org/10.1051/matecconf/201824403007.

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The paper presents the results of non-destructive testing to the final control of automotive heat exchangers, which must meet a number of technological and exploitative requirements resulting from their working conditions. For the observation of images of heat exchangers, verification of geometrical dimensions and identification of surface and volume defects, the used methods were: computed tomography (highresolution microtomograph Phoenix v|tome|x), three-dimensional optical scanning (3D GOM ATOS III optical scanner), coordinate measuring technique (coordinate measuring machine Hexagon Global Performance 122210). The effectiveness of nondestructive testing in industrial conditions was assessed and the directions of further research in this area were indicated.
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2

Lapidus, Azariy, Alan Khubaev, and Tembot Bidov. "Development of a three-tier system of parameters in the formation of the organizational and technological potential of using non-destructive testing methods." E3S Web of Conferences 97 (2019): 06037. http://dx.doi.org/10.1051/e3sconf/20199706037.

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The efficiency potential of organizational and technological solutions using the methods of non-destructive testing of the strength of monolithic structures in the construction of civil buildings and structures has been investigated. In this article scientific and technical hypothesis was compiled. It consists in the assumption of the possibility of developing a system for evaluating the organizational-technological potential of using non-destructive testing methods based on the method of qualimetric analysis. The four most significant groups of parameters were identified on the basis of this method. They can have a significant impact on the organizational and technological potential of using non-destructive testing methods. The orthogonal central compositional plan was chosen as the basis for planning the experiment. This will reduce the number of experiments in the formation of the potential to 25, and to assess the degree of influence of each production and technological module in the implementation of the construction project. The system of variation of groups of parameters consisting of three levels was formed for the purpose of further research based on the tree of goals. The basis for the mathematical apparatus is prepared. This unit characterizes the parameters of the object.
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3

Shupenev, A. E., N. S. Pankova, I. S. Korshunov, and A. G. Grigoriyants. "An Analysis of Non-Destructive Methods for Thin Film Thickness Measurement." Proceedings of Higher Educational Institutions. Маchine Building, no. 4(709) (April 2019): 18–27. http://dx.doi.org/10.18698/0536-1044-2019-4-18-27.

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The thickness of thin films determines the films’ unique properties, due to which they are widely used in optics and electronics. To measure the thickness of films in the range of 1 nm — 1 mcm during film deposition or on a finished product, it is important that non-destructive measurement methods should be used. An analysis of the most commonly used non-destructive methods for measuring and controlling the thickness of thin films is performed, with a possibility of in situ control of the technological process as well as for testing of finished products. This work describes theoretical and practical considerations of using reflection high-energy electron diffraction, piezoelectricity, interferometry and gravimetric methods for thin film thickness measurements. The results of the study can be used for selecting an optimal method of obtaining thin films when conducting theoretical and applied research.
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4

Zabelina, Olga. "Application of non-destructive methods of control within the inspection of concrete structures." E3S Web of Conferences 258 (2021): 09007. http://dx.doi.org/10.1051/e3sconf/202125809007.

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This paper discusses the main non-destructive quality control methods that are used in the inspection of both under construction and already existing concrete structures. Purpose of the work: to conduct a comparative analysis of non-destructive testing methods, to consider a practical example of their application in the survey of a building being reconstructed, to identify the essential points of the organization of non-destructive quality control, which must be taken into account when developing a site work execution program. Materials and methods: the application of methods of non-destructive testing, separation with spalling and the ultrasonic method of surface sounding, is considered in detail. Results: the results of the inspection of structures by the methods separation with spalling and the ultrasonic method of surface sounding are presented, the test conditions, basic requirements for correct data interpretation, and the necessary calculations are given. Recommendations are given for planning the quality control of concrete structures at the stage of organizational and technological preparation of construction. Conclusions: non-destructive quality control finds its application both in the construction of new facilities and in the inspection of existing buildings. The choice of the survey method is made at the stage of development of a site work execution program, while it is necessary to take into account the features and scope of application of a particular method, probable measurement error, it is also possible to use several methods in combination.
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5

Lapidus, Azary, Tembot, and Alan Khubaev. "Development software for the non-destructive control of monolithic structures in housing construction." E3S Web of Conferences 258 (2021): 09003. http://dx.doi.org/10.1051/e3sconf/202125809003.

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We describe in this article the developed software package. This software package improves the efficiency of the non-destructive quality control system for monolithic structures. The need to create a comprehensive tool was justified. This tool is capable of solving complex problems, both at the stage of technological design and during construction production. In construction, atypical heterogeneous tasks often arise that must be solved in conditions of financial, labor and time constraints. This is due to the specifics of the construction industry. A new direction - “the potential for the effectiveness of organizational and technological solutions” can solve this problem. Earlier studies of the potential for using non-destructive testing methods made it possible to form a scientific base for the formation of a comprehensive program program. The methodology for calculating the potential for using non-destructive testing methods in organizing the construction of residential buildings has been described. An algorithm for determining the qualitative characteristics of the potential during the implementation of the construction project was also developed. This algorithm includes 4 stages: comparative analysis of the existing situation at the facility; selection and establishment of levels of values of the parameters of ATM calculation of organizational and technical potential; calculation of a psychophysical assessment corresponding to the value of the potential.
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6

Nasonov, F. A., V. M. Aleksashin, D. A. Melnikov, and S. V. Bukharov. "Zinc-stearate modification of epoxy resins and carbon plastics based on them and its influence on the basic technological properties of the composition." Voprosy Materialovedeniya, no. 3(95) (January 10, 2019): 146–56. http://dx.doi.org/10.22349/1994-6716-2018-95-3-146-156.

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The influence of the special modification of epoxy resins and polymer composites based on them on the basic technological properties of the composition is investigated. Modification is performed in order to reduce the opening damage. The most important technological properties of the initial epoxy composition and modified technological additives are studied and compared by standard methods (viscosimetry, thermoanalytical methods). A kinetic model of the curing process was created, the experimental production of samples from plastics filled with carbon long filler (impregnation under pressure, autoclave molding) and its non-destructive testing were carried out.
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7

Trufanov, N. N., D. V. Churikov, and O. V. Kravchenko. "Application of spectral analysis methods for data pre-processing of anomaly detection problem of vibration diagnostics in non-destructive testing." Journal of Physics: Conference Series 2127, no. 1 (November 1, 2021): 012028. http://dx.doi.org/10.1088/1742-6596/2127/1/012028.

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Abstract The paper is devoted to the problem of primary data processing obtained in the vibration measurements during the processing of the workpiece on a milling machine with computer numerical control. An experimental setup is described and an algorithm for analysing vibration diagnostics signals using a mathematical machine learning tool is proposed. Special attention is paid to the study of the rigidity characteristics of the machine at different relative positions of its components. The analysis of the equipment design and factors affecting the ongoing process is carried out, as a result of which the received signal is processed and its characteristic fragments in the time and frequency domains are identified. The data is prepared for further use in solving the problem of detecting anomalies of the technological process, which implies predicting the progress of the technological process based on a mathematical model constructed using machine learning methods, and identifying deviations of the real technological process from the forecast. Preliminary preparation is carried out using the windowed Fourier transform. Various variants of windows in the transformation are considered, including those constructed using atomic functions. Calculations are performed using the Python 3.9 language, the main results are supported by graphs. The development of training methods for the considered models of neural networks is the subject of further research.
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8

Martyniuk, R. T., O. T. Chernova, and M. R. Shyan. "ANALYSIS OF METHODS AND MEANS OF DETERMINATION OF THE FACTORY OF OIL PIPELINES AND THE CALCULATION OF THEIR RESIDUAL RESOURCES." PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Number, no. 1(59) (January 28, 2021): 134–41. http://dx.doi.org/10.31471/2304-7399-2020-1(59)-134-141.

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The basic principle of diagnosing long-life metal structures, and pipe­lines in particular, is based on consistent and systematic measurements of certain design parameters, on detecting changes in these parameters during operation and comparing them with the original ones, and on predicting changes in these parameters. The application of technical diagnostics and non-destructive testing methods to determine the actual technical status is a regular technological operation and, as experience shows, an effective way of ensuring the tech­nical reliability and safe operation of pipelines and the gas transmission system as a whole. The methods of non-destructive testing, correlation analysis and mod­ern methods of statistical processing of experimental and reference data (artificial neural networks) were used to determine the actual state of oil and gas pipelines. Factor and regression analysis methods were used during theoretical studies. In the course of the experimental studies, the methods of experiment planning, probability theory were used.
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9

Plachy, Tomáš, Pavel Tesárek, Richard Ťoupek, Václav Nežerka, and Michal Polák. "Influence of Freeze-Thaw Cycles on Mechanical Properties of Gypsum Determined Using the Impulse Excitation Method." Applied Mechanics and Materials 486 (December 2013): 353–58. http://dx.doi.org/10.4028/www.scientific.net/amm.486.353.

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Non-destructive methods for testing mechanical properties of materials spreads to many fields of investigation at present. A typical example of the use of non-destructive testing can be determination of the effect of freeze-thaw cycles on the mechanical properties of porous building materials. The great advantage of non-destructive testing, compared to destructive, is that still the same sample is tested and it excludes various negative effects such as technological indiscipline in the production of samples, different environment storage of samples prior to testing, recognition of cracks in the sample prior to testing, etc. The paper presents the development of modulus of elasticity on samples of hardened plaster according to the number of freeze-thaw cycles. Elastic moduli were determined using an impulse excitation method. For cyclic loading, the samples were saturated with water at 20 °C and tested in 8-hour cycles. Samples were removed from the water bath and placed in a freezer with a temperature lower than - 20 °C and after 8 hours they were placed again in the water bath for a period of eight hours. The temperature in the freezer was measured using platinum thermometers during the freeze-thaw cycles. The difference from 'dry' frost resistance was that the samples of hardened plaster were exposed to "wet" frost resistance, i.e. to the extreme load of the samples with the external climatic conditions.
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10

Arsić, Miodrag, Srđan Bošnjak, Vencislav Grabulov, Mladen Mladenović, and Zoran Savić. "Use of Non-Destructive Tests for the Assessment of Integrity and Service Life of Hydro-Mechanical Equipment." Advanced Materials Research 1146 (April 2018): 9–16. http://dx.doi.org/10.4028/www.scientific.net/amr.1146.9.

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Technical diagnostics of hydromechanical equipment, is based on testing procedures including the history of the exploitation with expert knowledge of structures and operating conditions, as well as, on the analysis of results performed by experts with appropriate experience and knowledge in design, exploitation, maintenance, reliability, fracture mechanics etc. Degradation of properties of the material and/or welded joints of hydro-mechanical equipment is being caused by the simultaneous influence of a large number of factors. First of all, it is thought of technological, metallurgical, structural and conditions of exploitation. In this paper, the selection of methodology for the rehabilitation of hydro-mechanical equipment is presented based on the previously conducted assessment of state of equipment using the nondestructive testing methods. Repair welding, repair of damaged surfaces by cold metallization, corrections of existing structural solutions of metallic components in order to improve their technical characteristics and extend the service life are presented.
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Дисертації з теми "Technological and non-destructive testing methods"

1

Lowea, D. "Methods of non-destructive testing." Thesis, Київський національний університет технологій та дизайну, 2019. https://er.knutd.edu.ua/handle/123456789/14600.

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2

Draper, Jeffrey Dean. "Neural networks and non-destructive test/evaluation methods." Thesis, College Park, Maryland : University of Maryland, College Park, 1992. http://handle.dtic.mil/100.2/ADA254802.

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Thesis (M.S. in Civil Engineering)--University of Maryland, College Park, 1992.
"A scholarly paper submitted to Assistant Professor Ian Flood." Description based on title screen as viewed on April 16, 2009. Includes bibliographical references (p. 49-52). Also available in print.
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3

Blaney, Sean. "Unmanned aerial vehicle-based non-destructive testing methods for concrete structures." Thesis, Elsevier; Cement and Concrete Composites, 2018. https://dspace.library.uvic.ca//handle/1828/9757.

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In this work, unmanned aerial vehicle-based non-destructive testing methods for concrete structures are evaluated and developed. There exists a need for improved infrastructure inspection techniques with increased expediency. Unmanned aerial vehicles (UAVs) are highly mobile and have shown promise towards achieving this directive, but more work is required to adapt traditional NDT methods to be UAV-compatible. To this end, concrete sounding techniques were evaluated with a quantitative acoustic frequency analysis procedure on a series of concrete slabs. One such method was adapted for use with a UAV and was used to detect subsurface voids in one of the concrete samples and offer a means of depth estimation. This work was complemented with experiments concerning UAV-based visual and infrared imaging techniques already in practice for UAV-based concrete inspection. Together, findings indicate the strengths and weaknesses of the NDTs tested and suggest further improvements for UAV-based NDTs and inspection strategies moving forward. Development of a novel sensor platform for UAV-based measurement, as well as results of an actual bridge inspection using infrared and optical methods demonstrate the present capabilities of the UAV-based instrumentation.
Graduate
2019-07-03
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4

Wong, Fuk-Lun Alexander. "Investigations into non-destructive methods of structural testing using finite element models." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/11956.

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5

Musonda, Vincent. "Comparative study of non-destructive testing methods of defect detection on aircraft." Master's thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/5498.

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Includes bibliographical references (leaves 122-135).
There is currently an increase in the usage of composite materials both in civilian and military aircraft because of their mechanical resistance, high toughness, reduced weight and immunity to corrosion. Any damage in the fibers of these composites requires an evaluation in order to ensure the integrity of aircraft structures. Composite materials are subject to various degrees of damage during their service life and therefore maintenance of these light-weight structures is a new challenge for non-destructive testing (NDT) which requires techniques that respond with a high probability of detection of defects on such high-specific strength materials. In this thesis, Digital shearography and Infrared Thermography (IRT) techniques are employed to test aircraft composite materials. Background information on the techniques has been presented and the literature survey has confirmed the use of these techniques on aircraft structures. Much of the inspection work reviewed in the literature has focused on qualitative evaluation of the defects rather than quantitative.
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6

Chipanga, Tendai. "Determination of the accuracy of non-destructive residual stress measurements methods." Thesis, [S.l. : s.n.], 2009. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1100&context=td_cput.

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7

Kilic, Gokhan. "Application of advanced non-destructive testing methods on bridge health assessment and analysis." Thesis, University of Greenwich, 2012. http://gala.gre.ac.uk/9811/.

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Bridge structures have an important role in economic, social and environmental aspects of society life. Bridges are also subject to a natural process of deterioration of construction materials, as well as natural and environmental events such as flooding, freezing, thawing etc. Health monitoring and assessment of the structural integrity of bridges have been the focus of engineers and researchers for decades. Currently, the various aspects of bridge health are monitored separately. However, measuring these aspects independently does not give the overall health of the bridge and crucial indicators of structural damage can be neglected. Generally, bridge health assessments take the form of individual NDT (non-destructive techniques) detecting individual defects. However value can be added to these results by combining and comparing the findings of several different NDT surveys. By completing this, a more accurate assessment of bridge health is obtained. This increases confidence in the decision as to whether remedial action is necessary. In this thesis an integrated bridge health monitoring approach is proposed which applies several NDT specifically chosen for bridge health assessments, thus achieving this added value. This method can be used as a part of a comprehensive bridge monitoring strategy as an assessment tool to evaluate the bridges structural health. This approach enables the user of this approach to obtain a detailed structural report on the bridge with all the necessary information pertaining to its’ health, allowing for a fully educated decision to be made regarding whether remedial action is necessary. This research presents the results of the applications of such methods on case studies utilising Ground Penetrating Radar (GPR), IBIS-S technology / system (deflection and vibration detection sensor system with interferometric capability) and Accelerometer sensors. It also evaluates the effectiveness of the adopted methods and technologies by comparing and validating the yielded results with conventional methods (modelling and visual inspection). The research presents and discusses processed data obtained by the above mentioned methods in detail and reports on challenges encountered in setting up and materialising the assessment process. This work also reports on Finite Element Modelling (FEM) of the main case study (Pentagon Road Bridge) using specialist software (SAP2000 and ANSYS) in order to simulate the perceived movement of the bridge under dynamic and static conditions. The analytical results output were compared with results obtained by the applications of the above non-destructive methods. Thus by using these techniques the main aim of this thesis is to develop an integrated model/approach for the assessment and monitoring of the structural integrity and overall functionality of bridges. All the above methods were validated using preliminary case studies (GPR), additional equipment (accelerometers for IBIS-S validation) and additional techniques and information (SAP 2000 and ANSYS were compared to one another and IBIS-S results). All of these techniques were applied on the Pentagon Road Bridge. This bridge was chosen as no information was available regarding its structural composition. Visual inspection showed the external defects of the structure: cracking, moisture ingress and concrete delamination was present in one of the spans of the bridge. The GPR surveys gave the position of the rebars and also signs of moisture ingress at depths of 20cm (confirmed using velocity analysis). IBIS-S gave results for the deflection of the structure. FEM was used to model the behaviour of the bridge assuming no defects. To achieve additional model accuracy the results of the rebar position were input in to the model and it was calibrated using IBIS-S data. The deflection results from the model were then compared to the actual deflection data to identify areas of deterioration. It was found that excessive deflection occurred on one of the spans. It was thus found that all NDT indicated that a particular span was an area of significant deterioration and remedial action should be completed on this section in the near future. Future prediction was also completed by running simulations in ANSYS for increasing crack lengths and dynamic loading. It was found that if there is no remedial action excessive beam bending moments will occur and eventual collapse. The results of this research demonstrated that GPR provided information on the extent of the internal structural defects of the bridge under study (moisture ingress and delamination) whilst IBIS-S technology and Accelerometer sensors permitted measurement of the magnitude of the vibration of the bridge under dynamic and static loading conditions. The results depicted similarities between the FEM results and the adopted non-destructive methods results in location and pattern. This work can potentially contribute towards a better understanding of the mechanical and physical behaviours of bridge structures and ultimately assess their life expectancy and functionality.
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8

Lu, Mingyang. "Forward and inverse analysis for non-destructive testing based on electromagnetic computation methods." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/forward-and-inverse-analysis-for-nondestructive-testing-based-on-electromagnetic-computation-methods(c9b4f030-eb7d-42a9-b55c-07df6b96aa1f).html.

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EM computation methods for the simulation and reconstruction of the metallic plate properties are investigated in this thesis. Two major computational problems exist in EM NDT: the forward problem and the inverse problem. The forward problem is to calculate the frequency-dependent inductance for steel plates with arbitrary values of permeability, conductivity, thickness and lift-off (i.e. the distance between the sensor and test sample). The inverse problem involves how to determine each parameter, i.e. permeability, conductivity, thickness and lift-off from the frequency-dependent inductance measurements. The purpose of this dissertation is to develop advanced forward and inverse solvers. This work will mainly deal with metallic plate structure in the low-frequency induction scheme. For the forward problem, both edge-element FEM and Dodd and Deeds analytical solution to simulate the eddy current probe-coil problems are developed. The feasibility and accuracy of the proposed forward solvers are verified by experiments and numerical solutions. An example of computation of eddy currents in metallic plates is also carried out to test the performance of the solver. The dissertation then goes further to consider the solution of the inverse problem of determining unique values for the four variables - permeability, conductivity, thickness and lift-off (i.e. the distance between the sensor and test sample) from the multi-frequency inductance spectra. In particular, novel methods on how to compensate lift-off variations are proposed. In addition, CIP is explored to measure the permeability of ferrous plates. These methods are verified by measurement results from EM sensors.
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9

Chan, Hon-Fung Cyril. "Non-destructive testing of concrete piles using the sonic echo and transient shock methods." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/13349.

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10

Schecklman, Scott G. "Physics-Based Signal Processing Methods for Terahertz Non-Destructive Evaluation of Layered Media." PDXScholar, 2019. https://pdxscholar.library.pdx.edu/open_access_etds/5013.

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In recent years Terahertz (THz) time domain spectroscopy has emerged as a promising new technology with potential applications in a variety of fields, including industrial manufacturing, security screening and medical imaging. Pulsed THz systems are uniquely suited for non-destructive evaluation (NDE) of the sub-surface layers of dielectric packaging and coating materials, because they provide high dynamic range over a wide bandwidth in the far infrared portion of the electromagnetic spectrum. Often the dielectric materials of the packaging and/or surface coating layers exhibit relatively low loss and abrupt changes in the refractive index at the layer boundaries can be observed as a train of THz pulses in A-scan data. However, many practical applications of THz NDE will require fast signal acquisition to efficiently scan and evaluate many samples. The conventional processing approach shown in much of the published work in the field of THz NDE does not perform well in low signal-to-noise ratio (SNR) conditions. In addition, many samples of interest contain thin film layers and the THz pulses reflecting from the boundaries overlap on top of one another. Thus, it is not always possible to calculate the thickness of thin films from conventional time difference of arrival (TDOA) measurements. In this dissertation physics-based signal processing methods that have been historically used for radar/sonar signal processing are adapted and applied for THz NDE of layered media. Results are demonstrated with measured data from a pulsed THz system in the Northwest Electromagnetic and Acoustics Research Laboratory (NEAR-Lab) at Portland State University (PSU). This research is expected to provide an important link for THz researchers to access and apply the robust methods that have been developed over several decades for other applications. Two key contributions of this work are: 1. Development of a matched filter approach for THz NDE of thick layered media based on the maximum likelihood estimator (MLE). 2. Development of a matched field processing (MFP) approach for THz NDE of thin-film layered media, based on techniques in the underwater acoustics literature.
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Книги з теми "Technological and non-destructive testing methods"

1

Blitz, Jack. Ultrasonic methods of non-destructive testing. London: Chapman & Hall, 1996.

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2

Woodward, R. J. Non destructive testing methods for concrete bridges. Crowthorne, Berks: Transport and Road Research Laboratory, Structures Group, Bridges Division, 1989.

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3

Woodward, R. J. Non destructive testing methods for concrete bridges. Crowthorne: Bridges Division, Structures Group, Transport and Road Research Laboratory, 1989.

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4

Blitz, Jack. Electrical and magnetic methods of non-destructive testing. 2nd ed. London: Chapman & Hall, 1997.

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5

Blitz, Jack. Electrical and Magnetic Methods of Non-destructive Testing. Dordrecht: Springer Netherlands, 1997.

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6

Blitz, Jack. Electrical and Magnetic Methods of Non-destructive Testing. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5818-3.

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7

Karama, Moussa. Dynamics of the structures and non destructive testing: Special topic volume with invited peer reviewed papers only. Durnten-Zurich, Switzerland: Trans Tech Publications Ltd, 2011.

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8

Blitz, J., and G. Simpson. Ultrasonic Methods of Non-destructive Testing (Non-Destructive Evaluation Series). Springer, 1996.

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9

Blitz, J. Electrical and Magnetic Methods of Non-destructive Testing (Non-Destructive Evaluation Series). Springer, 1997.

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10

Blitz, J. Electrical and Magnetic Methods of Non-destructive Testing. Springer, 2012.

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Частини книг з теми "Technological and non-destructive testing methods"

1

Hull, Barry, and Vernon John. "Electrical Test Methods (Eddy Current Testing)." In Non-Destructive Testing, 32–56. London: Macmillan Education UK, 1988. http://dx.doi.org/10.1007/978-1-349-85982-5_4.

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2

Hull, Barry, and Vernon John. "Electrical Test Methods (Eddy Current Testing)." In Non-Destructive Testing, 32–56. New York, NY: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4684-6297-5_4.

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Blitz, Jack. "More advanced eddy current testing methods." In Non-Destructive Evaluation Series, 162–83. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5818-3_6.

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4

Gautier, S., G. Le Besnerais, A. Mohammad-Djafari, and B. Lavayssière. "Data Fusion in the Field of Non Destructive Testing." In Maximum Entropy and Bayesian Methods, 311–16. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-5430-7_37.

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Uzgider, Erdoğan. "Non-Destructive Testing and Evaluation Methods for Railway Bridges." In Transportation Infrastructure, 413–22. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-61092-9_38.

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Osegueda, R., C. Ferregut, M. J. George, J. M. Gutierrez, and V. Kreinovich. "Maximum Entropy Approach to Optimal Sensor Placement for Aerospace Non-Destructive Testing." In Maximum Entropy and Bayesian Methods, 277–89. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5028-6_23.

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Ramírez-Rozo, Thomas J., Hernan D. Benítez-Restrepo, Julio C. García-Álvarez, and German Castellanos-Domínguez. "Non–referenced Quality Assessment of Image Processing Methods in Infrared Non-destructive Testing." In Image Analysis and Processing – ICIAP 2013, 121–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-41184-7_13.

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Sharma, A., M. D. N. Iqbal, and S. Singha. "An Experimental Review of Non- Destructive Testing Methods for Fruits and Vegetables." In Novel Water Treatment and Separation Methods, 293–312. Toronto ; Waretown, NJ : Apple Academic Press, 2017. | "Outcome of national conference REACT- 16, organized by the Laxminarayan Institute of Technology, Nagpur, Maharashtr , India, in 2016"--Introduction. || Includes bibliographical references and index.: Apple Academic Press, 2017. http://dx.doi.org/10.1201/9781315225395-22.

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Doktor, Markus, Christian Fox, Wolfgang Kurz, and Christina Thein. "Evaluation of Steel Buildings by Means of Non-destructive Testing Methods." In Progress in Industrial Mathematics at ECMI 2016, 585–91. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63082-3_90.

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Marini, R., M. A. Vaz, J. Monteiro, J. A. Chousal, and F. Santos. "Non-destructive testing of composite sandwich panels using optical interferometric methods." In Emerging Technologies in NDT, 25–30. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003078586-6.

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Тези доповідей конференцій з теми "Technological and non-destructive testing methods"

1

SHihov, A. I., and E. N. Dunaeva. "Non-destructive testing methods for construction sites." In Наука России: Цели и задачи. LJournal, 2019. http://dx.doi.org/10.18411/sr-10-04-2019-83.

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Shikhov, A. I., and E. N. Dunaeva. "Methods and devices for non-destructive testing." In ТЕНДЕНЦИИ РАЗВИТИЯ НАУКИ И ОБРАЗОВАНИЯ. НИЦ «Л-Журнал», 2018. http://dx.doi.org/10.18411/lj-10-2018-203.

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3

Alushllari, Mirela. "Non-destructive testing methods and their Applications." In University for Business and Technology International Conference. Pristina, Kosovo: University for Business and Technology, 2018. http://dx.doi.org/10.33107/ubt-ic.2018.182.

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4

Hass, Klaus, Lucas Riobo, Gerardo Gonzalez, Francisco E. Veiras, and Fernando L. Perez-Quintian. "Software-defined laser ultrasonics: non-destructive testing." In Novel Optical Systems, Methods, and Applications XXII, edited by Cornelius F. Hahlweg and Joseph R. Mulley. SPIE, 2019. http://dx.doi.org/10.1117/12.2538500.

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Psyk, Verena, Christian Hofer, Koen Faes, Christian Scheffler, and Edgar Scherleitner. "Testing of magnetic pulse welded joints – Destructive and non-destructive methods." In PROCEEDINGS OF THE 22ND INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112574.

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Šešlija, Miloš, Vlastimir Radonjanin, and Nebojša Radović. "Testing of pervious concrete with non-destructive methods." In Fifth International Conference on Road and Rail Infrastructure. University of Zagreb Faculty of Civil Engineering, 2018. http://dx.doi.org/10.5592/co/cetra.2018.939.

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7

Hain, Miroslav, Ján Bartl, and Vlado Jacko. "Optical non-destructive testing methods of cultural heritage artefacts." In SPIE Proceedings, edited by Anton Štrba, Dagmar Senderákova, and Miroslav Hrabovský. SPIE, 2005. http://dx.doi.org/10.1117/12.639050.

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8

Si, Jiatun. "Comparative study of eddy current testing methods used in tube inspection." In Non-Destructive Evaluation Techniques for Aging Infrastructure & Manufacturing, edited by Walter G. Reuter. SPIE, 1998. http://dx.doi.org/10.1117/12.302532.

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Baylac, Guy, Ian Roberrts, and Erik Zeelenberg. "Non Destructive Testing of Unfired Pressure Vessels." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71701.

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Анотація:
This paper discusses the non destructive testing (NDT) of unfired pressure vessels made of ductile and tough steels, as contained in Part 5 of the European standard EN 13445:2002. The concept and use of testing groups along with “satisfactory experience” in welding are presented. Also the background and rationale for the determination of standards used for NDT methods, characterisation and acceptance criteria are discussed in detail. Benefits for the pressure equipment industry are emphasised.
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10

Roure, C., B. Cornu, E. Simon, N. Estre, B. Berthet, P. Guimbal, P. Kinnunen, and P. Kotiluoto. "Non-Destructive Examination Development for the JHR Material Testing Reactor." In 2013 3rd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications (ANIMMA). IEEE, 2013. http://dx.doi.org/10.1109/animma.2013.6727882.

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Звіти організацій з теми "Technological and non-destructive testing methods"

1

BERNDT, M. L. NON-DESTRUCTIVE TESTING METHODS FOR GEOTHERMAL PIPING. Office of Scientific and Technical Information (OSTI), March 2001. http://dx.doi.org/10.2172/777718.

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Galili, Naftali, Roger P. Rohrbach, Itzhak Shmulevich, Yoram Fuchs, and Giora Zauberman. Non-Destructive Quality Sensing of High-Value Agricultural Commodities Through Response Analysis. United States Department of Agriculture, October 1994. http://dx.doi.org/10.32747/1994.7570549.bard.

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Анотація:
The objectives of this project were to develop nondestructive methods for detection of internal properties and firmness of fruits and vegetables. One method was based on a soft piezoelectric film transducer developed in the Technion, for analysis of fruit response to low-energy excitation. The second method was a dot-matrix piezoelectric transducer of North Carolina State University, developed for contact-pressure analysis of fruit during impact. Two research teams, one in Israel and the other in North Carolina, coordinated their research effort according to the specific objectives of the project, to develop and apply the two complementary methods for quality control of agricultural commodities. In Israel: An improved firmness testing system was developed and tested with tropical fruits. The new system included an instrumented fruit-bed of three flexible piezoelectric sensors and miniature electromagnetic hammers, which served as fruit support and low-energy excitation device, respectively. Resonant frequencies were detected for determination of firmness index. Two new acoustic parameters were developed for evaluation of fruit firmness and maturity: a dumping-ratio and a centeroid of the frequency response. Experiments were performed with avocado and mango fruits. The internal damping ratio, which may indicate fruit ripeness, increased monotonically with time, while resonant frequencies and firmness indices decreased with time. Fruit samples were tested daily by destructive penetration test. A fairy high correlation was found in tropical fruits between the penetration force and the new acoustic parameters; a lower correlation was found between this parameter and the conventional firmness index. Improved table-top firmness testing units, Firmalon, with data-logging system and on-line data analysis capacity have been built. The new device was used for the full-scale experiments in the next two years, ahead of the original program and BARD timetable. Close cooperation was initiated with local industry for development of both off-line and on-line sorting and quality control of more agricultural commodities. Firmalon units were produced and operated in major packaging houses in Israel, Belgium and Washington State, on mango and avocado, apples, pears, tomatoes, melons and some other fruits, to gain field experience with the new method. The accumulated experimental data from all these activities is still analyzed, to improve firmness sorting criteria and shelf-life predicting curves for the different fruits. The test program in commercial CA storage facilities in Washington State included seven apple varieties: Fuji, Braeburn, Gala, Granny Smith, Jonagold, Red Delicious, Golden Delicious, and D'Anjou pear variety. FI master-curves could be developed for the Braeburn, Gala, Granny Smith and Jonagold apples. These fruits showed a steady ripening process during the test period. Yet, more work should be conducted to reduce scattering of the data and to determine the confidence limits of the method. Nearly constant FI in Red Delicious and the fluctuations of FI in the Fuji apples should be re-examined. Three sets of experiment were performed with Flandria tomatoes. Despite the complex structure of the tomatoes, the acoustic method could be used for firmness evaluation and to follow the ripening evolution with time. Close agreement was achieved between the auction expert evaluation and that of the nondestructive acoustic test, where firmness index of 4.0 and more indicated grade-A tomatoes. More work is performed to refine the sorting algorithm and to develop a general ripening scale for automatic grading of tomatoes for the fresh fruit market. Galia melons were tested in Israel, in simulated export conditions. It was concluded that the Firmalon is capable of detecting the ripening of melons nondestructively, and sorted out the defective fruits from the export shipment. The cooperation with local industry resulted in development of automatic on-line prototype of the acoustic sensor, that may be incorporated with the export quality control system for melons. More interesting is the development of the remote firmness sensing method for sealed CA cool-rooms, where most of the full-year fruit yield in stored for off-season consumption. Hundreds of ripening monitor systems have been installed in major fruit storage facilities, and being evaluated now by the consumers. If successful, the new method may cause a major change in long-term fruit storage technology. More uses of the acoustic test method have been considered, for monitoring fruit maturity and harvest time, testing fruit samples or each individual fruit when entering the storage facilities, packaging house and auction, and in the supermarket. This approach may result in a full line of equipment for nondestructive quality control of fruits and vegetables, from the orchard or the greenhouse, through the entire sorting, grading and storage process, up to the consumer table. The developed technology offers a tool to determine the maturity of the fruits nondestructively by monitoring their acoustic response to mechanical impulse on the tree. A special device was built and preliminary tested in mango fruit. More development is needed to develop a portable, hand operated sensing method for this purpose. In North Carolina: Analysis method based on an Auto-Regressive (AR) model was developed for detecting the first resonance of fruit from their response to mechanical impulse. The algorithm included a routine that detects the first resonant frequency from as many sensors as possible. Experiments on Red Delicious apples were performed and their firmness was determined. The AR method allowed the detection of the first resonance. The method could be fast enough to be utilized in a real time sorting machine. Yet, further study is needed to look for improvement of the search algorithm of the methods. An impact contact-pressure measurement system and Neural Network (NN) identification method were developed to investigate the relationships between surface pressure distributions on selected fruits and their respective internal textural qualities. A piezoelectric dot-matrix pressure transducer was developed for the purpose of acquiring time-sampled pressure profiles during impact. The acquired data was transferred into a personal computer and accurate visualization of animated data were presented. Preliminary test with 10 apples has been performed. Measurement were made by the contact-pressure transducer in two different positions. Complementary measurements were made on the same apples by using the Firmalon and Magness Taylor (MT) testers. Three-layer neural network was designed. 2/3 of the contact-pressure data were used as training input data and corresponding MT data as training target data. The remaining data were used as NN checking data. Six samples randomly chosen from the ten measured samples and their corresponding Firmalon values were used as the NN training and target data, respectively. The remaining four samples' data were input to the NN. The NN results consistent with the Firmness Tester values. So, if more training data would be obtained, the output should be more accurate. In addition, the Firmness Tester values do not consistent with MT firmness tester values. The NN method developed in this study appears to be a useful tool to emulate the MT Firmness test results without destroying the apple samples. To get more accurate estimation of MT firmness a much larger training data set is required. When the larger sensitive area of the pressure sensor being developed in this project becomes available, the entire contact 'shape' will provide additional information and the neural network results would be more accurate. It has been shown that the impact information can be utilized in the determination of internal quality factors of fruit. Until now,
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