Дисертації з теми "Drilling performance"
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Xia, Tian. "INVESTIGATION OF DRILLING PERFORMANCE IN CRYOGENIC DRILLING ON CFRP COMPOSITE LAMINATES." UKnowledge, 2014. http://uknowledge.uky.edu/me_etds/36.
Повний текст джерелаRowsell, Philip J. "The automatic optimisation of drilling performance." Thesis, University of Nottingham, 1991. http://eprints.nottingham.ac.uk/11909/.
Повний текст джерелаÅkerlund, Elin, Rebecka Havo, Åberg Jakob Jonsson, Patrik Österberg, and Mikael Fredriksson. "High Performance Steel for Percussive Drilling." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-323387.
Повний текст джерелаÅkerlund, Elin, Åberg Jakob Jonsson, Patrik Österberg, Rebecka Havo, and Mikael Fredriksson. "High Performance Steel for Percussive Drilling." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-323808.
Повний текст джерелаSonmez, Ahmet. "Performance Analysis Of Drilling Fluid Liquid Lubricants." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613581/index.pdf.
Повний текст джерелаOzkan, Erdal. "Performance of horizontal wells /." Access abstract and link to full text, 1988. http://0-wwwlib.umi.com.library.utulsa.edu/dissertations/fullcit/8825498.
Повний текст джерелаFarrelly, M. "Performance evaluation and selection of rotary drilling bits." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234404.
Повний текст джерелаAmbrose, D. "Diamond core bit performance analysis." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378761.
Повний текст джерелаSpäth, Bastian, Matthias Philipp, and Thomas Bartnitzki. "Machine performance and acoustic fingerprints of cutting and drilling." Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2018. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-231193.
Повний текст джерелаSpäth, Bastian, Matthias Philipp, and Thomas Bartnitzki. "Machine performance and acoustic fingerprints of cutting and drilling." TU Bergakademie Freiberg, 2017. https://tubaf.qucosa.de/id/qucosa%3A23182.
Повний текст джерелаCong, Weilong. "Drilling of high-performance materials: experimental, numerical, and theoretical investigations." Diss., Kansas State University, 2013. http://hdl.handle.net/2097/15476.
Повний текст джерелаDepartment of Industrial & Manufacturing Systems Engineering
Zhijian Pei
High-performance materials, such as silicon, aerospace stainless steels, titanium alloys, and carbon fiber reinforced plastic (CFRP) composites, have a variety of engineering applications. However, they usually have poor machinability and are classified as hard-to-machine materials. Drilling is one of the important machining processes for these materials. Industries are always under tremendous pressure to meet the ever-increasing demand for lower cost and better quality of the products made from these high-performance materials. Rotary ultrasonic machining (RUM) is a non-traditional machining process that combines the material removal mechanisms of diamond grinding and ultrasonic machining. It is a relatively low-cost, environment-benign process that easily fits in the infrastructure of the traditional machining environment. Other advantages of this process include high hole accuracy, superior surface finish, high material removal rate, low tool pressure, and low tool wear rate. The goal of this research is to provide new knowledge of machining these high performance materials with RUM for further improvement in the machined hole quality and decrease in the machining cost. A thorough research in this dissertation has been conducted by experimental, numerical, and theoretical investigations on output variables, including cutting force, torque, surface roughness, tool wear, cutting temperature, material removal rate, edge chipping (for silicon), power consumption (for CFRP), delamination (for CFRP), and feasible regions (for dry machining of CFRP). In this dissertation, an introduction of workpiece materials and RUM are discussed first. After that, two literature reviews on silicon drilling and dry drilling are presented. Then, design of experiment and finite element analysis on edge chipping in RUM of silicon, experimental investigations and finite element analysis on RUM of aerospace stainless steels, an ultrasonic vibration amplitude measurement method and a cutting temperature measurement method for RUM using titanium alloys as workpiece, experimental and theoretical investigations on RUM of CFRP composites, and experimental studies on CFRP/Ti stacks are presented, respectively. Finally, conclusions and contributions on RUM drilling are discussed.
Al-Basman, Al-Rashidi Abdulrahman. "Application of neural networks to evaluate factors affecting drilling performance." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/6914.
Повний текст джерелаTripuraneni, Gopi Chand. "Performance Analysis of Enhanced Activated Sludge as Drilling Mud Additive." Thesis, University of Louisiana at Lafayette, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10268960.
Повний текст джерелаThe use of drilling fluids alone is not sufficient to reduce friction substantially, so a suitable lubricant has to be added to the drilling fluid so as to reduce the friction to an acceptable range. The lubricant reduces friction of fluid by producing a thin film of liquid that separates the solid surfaces in contact.
The primary objective of this research is to evaluate the performance of enhanced activated sludge (EAS) as a lubricant in drilling fluids. Enhanced activated sludge is composed of mixed consortium of microorganisms grown under conditions that promote lipid accumulation. Experiments were conducted to evaluate (EAS) with different lipid contents. Performance of EAS as drilling fluid additive was compared with commercial lubricants in terms of lubricity and flow properties. Lubricants are evaluated using water-based drilling mud at lubricant concentrations of 1.78, 3.11, 4.43, and 6.17 pounds per barrel (ppb). Experiments were carried out in a standard lubricity meter. The Lubricity meter tests the ability of the lubricant in the drilling mud to reduce friction. Other parameters measured re plastic viscosity, gel strength, fluid loss, mud cake thickness, sand content, methylene blue test (MBT), alkalinity, and chlorides.
All the lubricants studied (including EAS) lowered the coefficient of friction and significant torque reduction. EAS reduced the torque and fluid loss better than raw sludge. However, the top performers in terms of reducing the torque were the commercial lubricants. Bio Add was the best performer in the presence of both barite and bentonite. HDL+ resulted in the least coefficient of friction when the mud was prepared with only bentonite. A cost analysis was prepared to show the economics involved in using sludge (raw and EAS) as additive in drilling fluids. These findings show the potential of activated sludge for improving the properties of water-based drilling mud.
Ersoy, A. "Performance analysis of polycrystalline diamond compact (PDC) core bits in rocks." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309552.
Повний текст джерелаWendling, Ignatz. "An evaluation of the performance of disc coulters." Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287830.
Повний текст джерелаManthri, Sandeep. "EXPERIMENTAL INVESTIGATION OF PCD COMPACT CORE DRILL PERFORMANCE ON BASALT SIMULATING SUSTAINABLE DRY DRILLING ON MARS." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_theses/495.
Повний текст джерелаMontgomery, Justin B. (Justin Bruce). "Characterizing shale gas and tight oil drilling and production performance variability." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98600.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (pages 137-147).
Shale gas and tight oil are energy resources of growing importance to the U.S. and the world. The combination of horizontal drilling and hydraulic fracturing has enabled economically feasible production from these resources, leading to a surge in domestic oil and gas production. This is providing an economic boon and reducing reliance on foreign sources of energy in the U.S., but there are still a number of environmental, economic, and technical challenges that must be overcome to unlock the resource's full potential. One key challenge is understanding variability in individual well performance-in terms of both drilling time (a key driver of well cost) and well productivity-which has led to greater than anticipated economic risk associated with shale gas and tight oil development. Thus far, more reliable forecasting has remained elusive due to its prohibitive cost and the poorly understood nature of the resource. There is an opportunity to make use of available drilling and production data to improve the characterization of variability. For my analysis, I use publicly-available well production data and drilling reports from a development campaign. In order to characterize variability, I use a combination of graphical, statistical, and data analytics methods. For well productivity, I use probability plots to demonstrate a universality to the distribution shape, which can accurately be described as lognormal. Building on this distributional assumption, I demonstrate the utility of Bayesian statistical inference for improving estimates of the distribution parameters, which will allow companies to better anticipate resource variability and make better decisions under this uncertainty. For drilling, I characterize variability in operations by using approximate string matching to compare drilling activity sequences, leading to a metric for operational variability. Activity sequences become more similar over time, consistent with the notion of standardization. Finally, I investigate variability of drilling times as they progress along the learning curve, using probability plots again. I find some indication of lognormality, with implications for how learning in drilling should be measured and predicted. This thesis emphasizes the relevance of data analytics to characterizing performance variability across the spectrum in shale gas and tight oil. The findings also demonstrate the value of such an approach for identifying patterns of behavior, estimating future variability, and guiding development strategies.
by Justin B. Montgomery.
S.M. in Technology and Policy
El-Wahab, Abo B. I. A. "The influence of tool geometry on the performance of drilling tools." Thesis, Aston University, 1985. http://publications.aston.ac.uk/11869/.
Повний текст джерелаZhang, Qiang Mechanical & Manufacturing Engineering Faculty of Engineering UNSW. "A study of high performance twist drill design and the associated predictive force models." Awarded by:University of New South Wales. Mechanical and Manufacturing Engineering, 2007. http://handle.unsw.edu.au/1959.4/31220.
Повний текст джерелаErturk, Mehmet Cihan. "Production Performance Analysis Of Coal Bed Methane, Shale Gas, Andtight Gas Reservoirs With Different Well Trajectories And Completiontechniques." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615510/index.pdf.
Повний текст джерелаPelley, Dean. "Performance of twin falls davit & lifeboat evacuation system in extreme seas /." Internet access available to MUN users only, 2003. http://collections.mun.ca/u?/theses,169027.
Повний текст джерелаChiu, Chung-man. "A Hong Kong study of the effectiveness of speed drilling in improving reading performance of Chinese dyslexic children." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B29791650.
Повний текст джерелаBhudwannachai, Pipat. "Performance evaluation and analysis of the use of CO2 cooling for conventional drilling of carbon fibre reinforced plastics." Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/66880/.
Повний текст джерелаPederick, Stuart. "Investigation of the effect of waterjet created slots in improving the performance of tricone drill bits in hard rock /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18616.pdf.
Повний текст джерелаAlabdulkarim, Saad A. "Assessing the Relationship between Occupational Injury Risk and Performance: the Efficacy of Adding Adjustability and Using Exoskeletons in the Context of a Simulated Drilling Task." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/89485.
Повний текст джерелаPHD
Ugwoha, Ezedimbu. "Performance of uncoated carbide tools in face turning of titanium base, Ti-6246 alloy and when drilling sintered nickel-base, RR1000 alloy." Thesis, London South Bank University, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618691.
Повний текст джерелаManikonda, Nikhil. "Performance of Deep Geothermal Energy Systems." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23219.
Повний текст джерелаMalý, Martin. "Analýza řezivostnich vlastností řezných nástrojů povlakovaných PVD povlaky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417590.
Повний текст джерелаLarsson, Rickard. "Development and application of a tool for assessing the impact of failure modes on performance of underground drill rigs." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-93415.
Повний текст джерелаПестунов, В. М., В. В. Свяцкий, Л. П. Свяцкая, V. Pestunov, V. Sviatskyi та L. Sviatska. "Увеличение производительности процесса глубокого сверления изменением пространственного положения инструмента". Thesis, Publishing House „Education and science” s.r.o, 2009. http://dspace.kntu.kr.ua/jspui/handle/123456789/6503.
Повний текст джерелаFredriksson, Mikael, Elin Åkerlund, Jakob Åberg, Patrik Österberg, and Rebecka Havo. "High Performance Steel for Percussive Drilling." Thesis, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-323789.
Повний текст джерелаKraussman, Andrew. "The Use of WBM to Improve ROP in HTHP/Hard Rock Environments." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9318.
Повний текст джерелаDe, Almeida Jose Alejandro. "Methodology for Predicting Drilling Performance from Environmental Conditions." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8808.
Повний текст джерелаBurman, Reeti R. "Performance assessment of Ongrade(tm) horizontal directional drilling method." 2009. http://digital.library.okstate.edu/etd/Burman_okstate_0664M_10274.pdf.
Повний текст джерелаLin, Yi-Hun, and 林誼涵. "Optimal Drilling Parameters in the 7075 Aluminum Alloy and Using Coated Cutter for Enhancement of Drilling Performance." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/w6u3w3.
Повний текст джерела龍華科技大學
機械工程系碩士班
105
The 7075 aluminum alloy has been widely used in aerospace, marine automobile and mineral industries, due to their excellent properties such as light weight, high strength and relatively good resistance to corrosion and fatigue. In the work, preliminary experiment was conducted to determine the optimum point angle and clearance angle in drilling7075 aluminum alloy. Using the Taguchi quality design concept, an L9 (33) orthogonal array, signal-to-noise ratio and analysis of variance were employed to examine the performance of the drilling operations. As a result, the spindle speed is the most significant factor for the holes enlargement, roundness, and surface roughness. This study obtains the multiple performance characteristics for drilling operation using grey-Taguchi analysis. In the confirmation runs, showed the lowest holes enlargement about 134 μm, the roundness about 81 μm, and the surface roughness about Ra=0.89 μm. In order to study the machining characteristics for drilling7075 aluminum alloy, TiN and TiAlN nitride thin films (thickness of ~400 nm and ~390 nm) were coated onto the surface of drill tool using magnetron sputtering. The experimental result shows that, with a nitride thin films coating produces a smaller holes enlargement, roundness and surface roughness. Further, in order to easy remove the chip, the drilling performance characteristics are improved by the inverted drilling.
Chen, Hung-Che, and 陳弘哲. "The Studies of the Influence of Grinding Parameters on the Drilling Performance and Drilling Quality By Taguchi Method." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/74388624374470736974.
Повний текст джерела中原大學
機械工程研究所
92
In the past, the key point of drill fabrication was focused on how to select proper parameters to apply to different materials. In addition, the most of the time we considered the drilling geometry and the relation between Drilling Geometry and Drilling Force. But people less mentioned about the drill grinding parameters for the selection of grinding wheel, modification of grinding wheel, times of grinding and usage of grinding liquid which would influence the drilling capacity and drilling quality. This research was subject to the parameters of drill grinding to apply Taguchi Method to plan the drill-grinding test. To use the tooling grinding machine equipped with drill enclosed with grinding drill, also to use multifunction tooling machine to process (drill) the low carbon object, and analyze the different parameters of drill grinding influence the drilling capacity and drilling quality. Although we reduced the testing times and still can get the result data to do analyzing from the testing arrangement fixed according by Taguchi Method and referring the SN Ratio Assistant table to obtain the most proper parameters of driller. Furthermore, to know how they affect to the result from various testing factors of the drilling ability experiment and drilling quality experiment by means of the Analysis of Variance. The last, we used the most proper conditions and factors to do reconfirming test. To compare with the forecast value of this project, the repeat was still in the 3.61%∼24.5% range.
Ferreira, Erik Jorge Silva. "Hole cleaning performance monitoring during the drilling of directional wells." Master's thesis, 2012. http://hdl.handle.net/10362/13808.
Повний текст джерелаMunoz, Principe Henry Edinson. "Rock strength and deformability characterisation and assessment for drilling performance estimation." Thesis, 2017. http://hdl.handle.net/2440/104725.
Повний текст джерелаThesis (Ph.D.) (Research by Publication) -- University of Adelaide, School of Civil, Environmental and Mining Engineering, 2017.
Lee, Sang Jo. "The influence of drill characteristics and entry mechanisms on drilling performance." 1986. http://catalog.hathitrust.org/api/volumes/oclc/13685513.html.
Повний текст джерелаTypescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 148-152).
HUANG, HONG-CAN, and 黃宏燦. "Study on the geometrical parameters and drilling performance of multifacet drill (MFD)." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/35582759709782494324.
Повний текст джерела"A review of the specific performance characteristics of hard rock tunnel boring machines." Thesis, 2015. http://hdl.handle.net/10210/14510.
Повний текст джерелаThis dissertation provides a review of the most notable papers published with regard to the specific performance characteristics of Tunnel Boring Machines (TBM's) during the past twenty years. It is a literature study of a Bibliography of 57 publications, which were screened from an original list of 970 documents ...
Chen, Hsing-Wen, and 陳興文. "The High-Speed Drilling Performance of PCB Micro-Drill with Different Geometry Design." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/16103510019302899481.
Повний текст джерела國立中正大學
機械系
90
Abstract The high-speed micro-hole drilling is one of the major processes of printed circuit board(PCB) fabrication. The quality of the process is very important to gold-coated disposal and the others. In drilling, the micro-drill contacts with PCB directly resulting in cutting effect on it. Drill bit geometry design is an important factor for drilling efficiency. The parameters of drill bit geometry design are complex and correlated with each other. Due to small diameter and high aspect ratio, the strength and rigidity of micro-drill becomes weak. In this research, point angle, helix angle, web thickness and chisel edge angle are four important design parameters of the drill bit geometry. Using partial factor design of experiment and the method of variance analysis, one can obtain the interaction relationship among design parameters, drilling force, wear, and PCB hole position accuracy. For three-axis resultant force analysis, the point angle has the highest variance and its contribution is 65.32% here. Meanwhile, the interaction effect between point angle and helix angle is the most significant. The smaller point angle is and the bigger helix angle is, the better the result is. But when point angle is bigger, the smaller helix angle is the best choice. As for torsion analysis, the interaction between point angle and chisel edge angle is very obvious and their contribution is 31.54% here. When the point angle is smaller and chisel edge angle is bigger, the torsion is the smaller. But when point angle is bigger, the chisel edge angle is not significant. However, the chisel edge angle should be smaller in this situation. In factorial experiment and analysis of wear, when the web thickness and the chisel edge angle are designed to be smaller, wear rate will reduce. Although the contribution of the point angle is only 0.003174%, the interaction effect between point angle and web thickness is very obvious. In order to reduce wear rate, point angle should be designed bigger. As for the analysis of hole position accuracy, the contribution of the helix angle is the most significant. The bigger point angle is, the worse hole position accuracy is. The interaction effect between helix angle and chisel edge angle is more obvious than the others. The smaller helix angle is and the bigger chisel edge angle is, the better hole position accuracy is. The results can be utilized in the micro-drill geometry design and determination of geometry parameter designed in new type micro-drill. It takes least time and money to develop micro-drill. In addition, researcher in micro-drill geometry design can fit more levels to the obvious effective factors in the beginning of the drilling experiment. The interaction effect of factor and each other can be considered at the same time. They can improve drill efficiency and the high-speed drilling performance of PCB. Keywords: high-speed drilling, micro-drill, drill bit geometry design, interaction effect, drill force, wear, hole position accuracy
Hood, Michael. "A study of methods to improve the performance of drag bits used to cut hard rock." Thesis, 2015. http://hdl.handle.net/10539/18193.
Повний текст джерелаCoddou, Ginny Anne. "Drilling performance improvement : Brett and Millheim model adaptations for interaction effects and multiple learners." Thesis, 2012. http://hdl.handle.net/2152/29155.
Повний текст джерелаtext
Hsieh, Min-Hsiung, and 謝銘雄. "The Performance Analysis and Experiment Studies of Precise Positioning System for PCB Drilling Machine." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/03460381672932362050.
Повний текст джерела大葉大學
機械工程研究所
87
The purpose of the thesis is researched the performance analysis and experiment studies of precise positioning system for PCB drilling machine. Then, the complete analysis technique will be established. First, To analyze the basic characteristics include stiffness and load capacity of aerostatics bearing. Second, The stiffness sees to linear of gad film at clearance inside. The eight-degree of free model (x、y、z、α、β、γ、px1、px2)of aerostatics guide with its equation of motion is formulated. The equations are decoupled to derive the dynamic characteristics of aerostatics guide. Then, the dynamic response performance is experiment measured. Make use of the ANSYS software progress and compare with the modal analysis and modal testing data. The results of the theory and experiment are all examined. Finally, Establish the certain the theory''s rationality and validity.
Joshi, Raunak, and 羅傑. "Evaluation of laser-assisted Scribing and Drilling performance using Ytterbium laser for semiconductor materials." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/j4aah2.
Повний текст джерела南臺科技大學
電機工程系
106
Laser scribing and drilling of materials plays a critical factor in semiconductor, electronics and packaging industry. Research and development in these industries are booming since last decade. Lasers used in the industries are very expensive and requires very high maintenance. Along with these problems, the efficiency of the laser is lower than the price paid for it. The main factors for considering the availability of different types of lasers are scribing and drilling. Power, frequency and wavelength of the laser are key factors to carry out scribing and drilling process on different types of material. The main purpose of this thesis is to propose a new model which could replace the existing system keeping the efficiency, cost of production and maintenance in consideration. Ytterbium laser possesses better features because of its higher efficiency and low cost. Along with these advantages, there are a few disadvantages associated with it. This thesis will tackle these problems during the system setup. The main problem with ytterbium laser is alignment as this laser belongs to infrared region and is not visible to human eyes. Alignment of the laser is important because it is directly proportional to the efficiency of the laser. The proper alignment shows a significant increase in efficiency and could be vice versa. A new property of ytterbium laser has been found during the alignment process in this thesis. Ytterbium laser when comes in contact with aluminum nitride produces a green light because of reaction between laser and surface of aluminum nitride. As ytterbium laser is invisible, this property helped us to know the exact position of laser and also helped in the alignment process. This thesis also compares experimental results between ytterbium and diode pumped solid state laser. The wavelength of ytterbium laser is 1064 nm and the wavelength of diode pumped solid state laser is 355 nm. Laser with higher wavelength possesses wider beam width. Scribing and drilling experimental results is the base for comparison between lasers. Ytterbium laser is proved to have several advantages over diode pumped solid state laser. First, Ytterbium laser is cheaper and requires less maintenance than conventional laser. The other is that its laser beam with higher wavelength can scribe deeper into opaque materials like aluminum nitride and silicon. Experiments are conducted with two different types of laser. As a result, ytterbium laser proved to have better depth and width. It could also be used for drilling applications which were not possible with diode pumped solid state laser. In this thesis, we explore the correlation between the transparency of an object and the wavelength. When the wavelength of the laser is in infrared zone there is no reflection at surface of the wafer.
Chen, Mei-Yin, and 陳美吟. "The Study of Using Predict Support System to Promote the Parallel Drilling Machine Production Performance." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/m5e6gd.
Повний текст джерела國立高雄應用科技大學
工業工程與管理系碩士班
103
The basic structure of buildings is composed of reinforce, Earthquakeshappened in Taiwan are frequent, steel building strength affects public safety and property, because of few Iron ore resources in our country, we have imported steel materials from abroad, so the sale price is often subject to international iron ore price change impact, this situation is very unfavorable for the steel industry. In this study, we chose the most common number of H-beam processing drilling process to discuss after we analysis the problem of iron and steel industry. After collecting all of the processing information, we use the Multiple Regression Analysis to solve the problem of the data, also we use the EXCEL software package to establish a forecasting support system, to help the company management to estimate the production time to lay the standard production volume and reward system. By empirical results that, if the individual job performance as a production line operator's incentive target will award by the Improshere plan to work appropriately, this reward performance measure is mainly aimed at the working hours and personal productivity. The study was concluded, the number of hours of work and drilling to grow in a linear fashion, for example work situation in August at machine A ,the employees can get 4,901 dollar as a reward.
Chen, Ming-Shan, and 陳明山. "The drilling performance and hole quality of multilayer diamond-like carbon deposited on micro-drill." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/98817249896773949509.
Повний текст джерела建國科技大學
自動化工程系暨機電光系統研究所
101
The study is to research the drilling performance of a-C:H:Zr coatings prepared by sputtering graphite ,zirconium targets ,CH4 and C2H2 used unbalanced magnetron sputtering system. The stusy contains three stages .The objective is study the influence of Zr target current on the drilling properties of coatings in the first stage. It change the interlayer was from one multilayer to four multilayer in the second stage. Base on the second stage, results the coating hardness is low. In order to improve the hardness, the coating have been designed a multilayer structure. It contain both hard and soft layer in the multilayer coating in the third stage. The drilling performance of the coated micro-drills is evaluated by conducting high-speed through-hole drilling tests using printed circuit board (PCB) specimens. The service life of the coated micro-drills is assessed utilizing three different criteria, namely the nail head ratio, surface roughness of the drilled hole, and diameter of drilled hole, respectively. The result display that the S3 coating process the test drilling performance and the highest drilling life time. It can improve the life time of drilling above 6000 holes drilled.
Wang, Yi-Hang, and 汪逸涵. "Tribological and drilling performance of DLC films with changed DC power frequency and substrate bias voltage." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/94825563531028923246.
Повний текст джерела國立成功大學
機械工程學系碩博士班
97
The main purpose of this study is to research the tribological properties and cutting performance of a-C:H coatings prepared by sputtering graphite and Zirconium targets with unbalanced magnetron sputtering system. It contains two stages of research in the study. We focus the influence of DC power frequency on the properties of coatings in first stage. We change the bias voltage of substrate to get various substrate bias voltage of coatings in second stage. In first stage, We change the frequency of DC power to get various frequency films structure for a-C:H coatings. We confer in what kind of parameter had the best tribological performance and use SRV to study the resistant abrasion of films. The films cross-section and wear surface analysis be used by SEM and EDS. Through the research of the first stage we know that the hardness of the coatings decrease and the adhesion of the coatings increase with the 70KHz. After SRV tribological test we verify that the coating prepared under the 70KHz has highest wear resistance and adherent properties. We got coatings with substrate bias voltage range from 42 to 62 in second three stage. Through the study we can know that low substrate bias voltage contributes to the adhesion of the coatings and the coatings have the lower friction coefficient and higher wear resistance. Then we will be use Raman Spectroscopy observed the variety of sp3/sp2 bond proportion of films structure and G、D peak position deflection to compare the result of resistance wear test. Finally, we would obtain the best DC power frequency for apply cutting tool and PCB drilling needle as the same as SRV test results that DC power frequency for 70KHz better than other value. The suitable DC power frequency and low substrate bias voltage promote the tool life and wear resistance properties.
Lynk, John Michael. "Performance of drag embedment anchors dragged through remolded clay and loaded at various horizontal orientations." Thesis, 2009. http://hdl.handle.net/2152/ETD-UT-2009-12-697.
Повний текст джерелаtext