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Relevant bibliographies by topics / Experimental machining / Dissertations / Theses

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Dissertations / Theses on the topic 'Experimental machining'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Rahmad, Rohani. "Numerical and experimental studies of metal machining." Thesis, University of Leeds, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.445843.

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2

Maranhão, César Miguel Ramos. "FEM analysis in machining and experimental validation." Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/2460.

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Mestrado em Engenharia Mecânica<br>A presente investigação contempla a simulação numérica e validação experimental de processos de maquinagem. O estudo consiste na simulação numérica da maquinagem de materiais de alto desempenho como a liga de alumínio 7075 e o aço inox AISI 316 com validação experimental. Diversas simulações e validações foram conduzidas de modo a cobrir uma gama de parâmetros de maquinagem. Forças de corte e de avanço, potência de maquinagem, máxima temperatura de corte e deformação plástica foram validadas com sucesso. Finalmente, foram modeladas outras grandezas no

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3

Pattavanitch, Jitti. "Numerical and experimental investigations into electrochemical machining." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/numerical-and-experimental-investigations-into-electrochemical-machining(dc33039b-cbad-4a65-8660-3a0abc72f465).html.

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This thesis presents numerical and experimental investigations into Electrochemical Machining (ECM). The aim is to develop a computer program to predict the shape of a workpiece machined by the ECM process. The program is able to simulate various applications of EC machining which are drilling, milling, turning and shaped tube electrochemical drilling (STED). The program has been developed in a MATLAB environment. In this present work, EC-drilling, EC-milling and EC-turning are analysed as three-dimensional problems whereas STED is simulated in two-dimensions. Experiments have been carried out

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4

Dirikolu, Mehmet Husnu. "Computer aided simulation and experimental studies on machining." Thesis, University of Leeds, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436244.

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5

Mollema, Jan Willem. "EXPERIMENTAL STUDY TOWARDS ALTERNATIVE WAYS OF MACHINING CEMENTED CARBIDE." Thesis, KTH, Industriell produktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147575.

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Sandvik Coromant is a leading supplier of tools for the metalworking industry. Sandvik Coromant launches every year thousands of new articles. A number of manufacturing techniques are available for single piece production of tungsten carbide inserts. These methods have their advantages and their disadvantages. Some of these disadvantages might be covered by using milling, however, milling tungsten carbide is hard. An interesting aspect of brittle materials that is researched over the last years is that its properties can be changed locally by applying a large hydrostatic pressure. By doing thi

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6

Xu, Jinyang. "Numerical and experimental study of machining titanium-composite stacks." Thesis, Paris, ENSAM, 2016. http://www.theses.fr/2016ENAM0022/document.

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Dans l’industrie aérospatiale, l’utilisation des matériaux hybrides CFRP/Ti montre une tendance à la hausse en raison de leurs propriétés mécaniques/physiques améliorées ainsi que des fonctions structurelles plus flexibles. En dépit de leurs nombreuses applications, l’usinage CFRP/Ti en perçage en une seule passe reste le principal défi scientifique et technologique de l’assemblage multi-matériaux. Par rapport au coût de production élevé et le temps des recherches basées sur des approches exclusivement expérimentales de l’usinage multi-matériaux, cette étude a pour objectif d’amener une meille

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7

Mahat, Abu Bakar. "An experimental study of parameters affecting ECM gap profile." Thesis, University of Manchester, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302003.

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8

Teomete, Egemen. "Mechanics of wire saw machining process experimental analyses and modeling /." [Ames, Iowa : Iowa State University], 2008.

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9

Yahyavi, Zanjani Matin, Mattias Hackert‐Oschätzchen, André Martin, and Andreas Schubert. "Experimental Study on Jet Electrochemical Machining of Intersecting Single Grooves." Universitätsbibliothek Chemnitz, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-231636.

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Due to unique advantages of Jet Electrochemical Machining (Jet‐ECM) such as the absence of mechanical and thermal effects, there is an increasing demand for the implementation of the technology in industrial sectors. However, meeting the stringent quality requirements of the current technological level is a challenge in Jet‐ECM especially for complicated microstructures. Hence, the implementation of an adequate metrology system is necessary to minimise deviations and to enhance the process towards zero‐defect‐manufacturing. The metrology system should be capable of measuring the workpiece befo

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10

Rashid, Asif Bin. "An Experimental and Theoretical Study of Developing Methods for Machining Ceramic Materials by Electrical Discharge Machining (EDM) Process." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami159426017923493.

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11

Ekmekci, Bulent. "Theoretical And Experimental Investigation Of Residual Stresses In Electric Discharge Machining." Phd thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/1138189/index.pdf.

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Electric Discharge Machining (EDM) is a process for eroding and removing material by transient action of electric sparks on electrically conductive materials immersed in a dielectric liquid and separated by a small gap. A spark-eroded surface is a surface with matt appearance and random distribution of overlapping craters. It is mechanically hard and stressed close to ultimate tensile strength of the material and sometimes covered with a network of micro cracks. The violent nature of the process leads a unique structure on the machined surface and generates residual stresses due mainly to the

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12

Hurtado, José Francisco. "Experimental study of workpiece-fixture contact forces and friction during machining." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/16096.

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13

Miah, Farid. "Numerical and experimental analysis of CFRP machining process in orthogonal cutting." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30005.

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Les matériaux composites, y compris le PRFC (polymère renforcé de fibre de carbone), sont de plus en plus utilisés en aéronautique et dans l'automobile, ce qui soulève actuellement de nombreuses complications dans les processus d'usinage. Comme ces matériaux sont fabriqués en plusieurs phases, ils sont responsables d'une mauvaise qualité d'usinage et de défauts indésirables. Cette thèse vise à mieux comprendre la technique physique fondamentale impliquée dans le mécanisme de formation de copeaux dans le découpage orthogonal d'usinage en PRFC par des études numériques et expérimentales combinée

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14

Daghini, Lorenzo. "Theoretical and experimental study of tooling systems : passive control of machining vibration." Licentiate thesis, Stockholm : Industriell produktion, Production Engineering, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4787.

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15

Liu, Jian. "Experimental study and modeling of mechanical micro-machining of particle reinforced heterogeneous materials." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5408.

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This study focuses on developing explicit analytical and numerical process models for mechanical micro-machining of heterogeneous materials. These models are used to select suitable process parameters for preparing and micro-machining of these advanced materials. The material system studied in this research is Magnesium Metal Matrix Composites (Mg-MMCs) reinforced with nano-sized and micro-sized silicon carbide (SiC) particles. This research is motivated by increasing demands of miniaturized components with high mechanical performance in various industries. Mg-MMCs become one of the best ca

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16

Martin, André, Tom Petzold, Matthias Hackert-Oschätzchen, Gunnar Meichsner, and Andreas Schubert. "Experimental Derivation of Process Input Parameters for Electrochemical Machining with Differentially Switched Currents." IIF Institut für Industriekommunikation und Fachmedien GmbH, 2018. https://monarch.qucosa.de/id/qucosa%3A36081.

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The manufacturing of components with complex internal features, e.g. for automobile industry, aeronautics or medical applications, is a significant challenge. Such components are often machined in temporarily and locally separated stages of production. Due to these separated stages, the form deviations and positioning errors increase, which leads to additional efforts for the quality assurance. The technology that shall be developed within the project SwitchECM is supposed to enable machining of components with differing complex features in one single production stage and shall simultaneously

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17

Shen, Xinwei. "Numerical modeling and experimental investigation of laser-assisted machining of silicon nitride ceramics." Diss., Kansas State University, 2010. http://hdl.handle.net/2097/6645.

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Doctor of Philosophy<br>Department of Industrial & Manufacturing Systems Engineering<br>Shuting Lei<br>Laser-assisted machining (LAM) is a promising non-conventional machining technique for advanced ceramics. However, the fundamental machining mechanism which governs the LAM process is not well understood so far. Hence, the main objective of this study is to explore the machining mechanism and provide guidance for future LAM operations. In this study, laser-assisted milling (LAMill) of silicon nitride ceramics is focused. Experimental experience reveals that workpiece temperature in LAM of si

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18

Ekanayake, Risheeka Ayomi Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "An experimental study on high speed milling and a predictive force model." Awarded By:University of New South Wales. Mechanical & Manufacturing Engineering, 2010. http://handle.unsw.edu.au/1959.4/44821.

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This thesis presents the research work carried out in an experimental study on High Speed Milling and a predictive force model. The Oxley??s machining theory [36] that can be considered a purely theoretical approach, which has not yet been applied to the high speed milling process is used to model this process in order to predict the cutting forces. An experimental programme was carried out in order to study and understand the high speed milling process and to collect force data for machining of AISI 1020 plain carbon steel at speeds from 250 to 500m/min, feed rates 0.025 to 0.075mm/tooth and

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19

Li, Zhichao. "Modeling, analysis, and experimental investigations of grinding processes." Diss., Manhattan, Kan. : Kansas State University, 2006. http://hdl.handle.net/2097/198.

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20

Muhammad, Riaz. "Hot ultrasonically assisted turning of Ti-15V3Al3Cr3Sn : experimental and numerical analysis." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12849.

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Titanium alloys have outstanding mechanical properties such as high hardness, a good strength-to-weight ratio, excellent fatigue properties and high corrosion resistance. However, several inherent properties including their low thermal conductivity and high chemical affinity to tool materials impairs severely their machinability with conventional machining techniques. Conventional machining of Ti-based alloys is typically characterized by low depths of cuts and relatively low feed rates, thus adversely affecting the material removal rates during the machining process. Recently, a non-conventio

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21

Wagner, Pinto Fábio. "An experimental and numerical approach to investigate the machining performance of engineered grinding tools /." Zürich : ETH/ IWF, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17666.

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22

Lundberg, Staffan. "Experimental investigations in wood machining related to cutting forces, sawdust gluing, and surface roughness." Licentiate thesis, Luleå tekniska universitet, Matematiska vetenskaper, 1994. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17499.

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23

Cong, Weilong. "Drilling of high-performance materials: experimental, numerical, and theoretical investigations." Diss., Kansas State University, 2013. http://hdl.handle.net/2097/15476.

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Doctor of Philosophy<br>Department of Industrial & Manufacturing Systems Engineering<br>Zhijian Pei<br>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 f

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24

Costa, Gonçalo José Rodrigues. "Experimental investigation of EDM parameters on machining AIMg10 15%SiC composite based on Taguchi method." Master's thesis, Universidade de Aveiro, 2013. http://hdl.handle.net/10773/11347.

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Mestrado em Engenharia Mecânica<br>O objetivo do estudo é investigar os efeitos da corrente de pico, servo voltagem, pulso on-time e pulso off-time na perfuração por electroerosão da liga de Alumínio Magnésio reforçado com carbonetos de silício e determinar a sua influência num grupo de parâmetros de saída, que incluem a taxa de remoção de material, desgaste do elétrodo, sobre corte radial e conicidade. Para melhor entender o problema experimental e todas as questões que este inclui, em primeiro lugar, foi feita uma revisão da literatura que abrange todos os princípios, tecnologias e apl

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25

Vora, Hitesh D. "Integrated Computational and Experimental Approach to Control Physical Texture During Laser Machining of Structural Ceramics." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc407758/.

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The high energy lasers are emerging as an innovative material processing tool to effectively fabricate complex shapes on the hard and brittle structural ceramics, which previously had been near impossible to be machined effectively using various conventional machining techniques. In addition, the in-situ measurement of the thermo-physical properties in the severe laser machining conditions (high temperature, short time duration, and small interaction volume) is an extremely difficult task. As a consequence, it is extremely challenging to investigate the evolution of surface topography through

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26

Cervelin, José Eduardo. "Estudo teórico-experimental das forças de corte no processo de torneamento." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/18/18140/tde-28092009-152513/.

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O estudo das forças de corte em usinagem tem várias aplicações, tais como definir a melhor geometria da ferramenta e sua interação com a peça. Este trabalho apresenta os resultados de simulações do processo de torneamento utilizando o método dos elementos finitos no corte ortogonal em aço AISI 4340 usando insertos de metal duro, comparando-os com resultados experimentais. As simulações foram realizadas no programa comercial Abaqus/Explicit TM considerando os efeitos térmicos do processo oriundos tanto da deformação do material quanto dos atritos nas interface peça-ferramenta-cavaco. As variáve

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27

Kojic, Sinisa. "A theoretical and experimental investigation of the BTA deep hole tool support in the machining zone." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq26010.pdf.

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28

Baharudin, B. T. Hang Tuah. "Experimental investigation of high speed micro machining of H13 tool steel and titanium alloy 6-4." Thesis, University of Liverpool, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494133.

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High-accuracy miniaturized components are increasingly in demand for various industries such as aerospace, biomedical, electronics, environmental, communication and automotive, and this coupled with new developments of High Speed Machining (HSM) has led to the emergence of a strong and viable technology in High Speed Micro Machining. This technology is very important in bridging the macro-domain and the nano- and micro- domains for making functional miniaturized components. High speed Micro Machining is a specific technology where high spindle speeds, high performances cutting tools and high a

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29

Cadot, Guillaume Bastien Jérémy. "Experimental and numerical investigations of diamond and related materials controlled-depth machining using pulsed laser ablation." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/46409/.

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Pulsed laser ablation is a non-conventional machining technique that is used to machine complex parts in ultra-hard materials and for minute part geometry, which are otherwise not readily accessible with conventional tooling. The constant development of new materials with enhanced properties, as well as the demand for products with improved functionality have led to a renewed interest for alternative machining. Pulsed laser ablation is regarded as a promising technology with potential to machine a wide range of materials and shapes. The use of non-mechanical methods is advantageous due to the

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30

Yurtseven, Saygin. "Analysis Of The Influence Of Non-machining Process Parameters On Product Quality By Experimental Design And Statistical Analysis." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1026863/index.pdf.

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This thesis illustrates analysis of the influence of the non-machining processes on product quality by experimental design and statistical analysis. For the analysis objective<br>dishwasher production in Arcelik Dishwasher plant is examined. Sheet metal forming processes of dishwasher production constitutes the greatest portion of production cost and using the Pareto analysis technique<br>four pieces among twenty six pieces are determined to be investigated. These four pieces are the U Sheet, L Sheet, Inner Door and Side Panel of the dishwasher. By the help of the flow diagrams production pro

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31

Hoseini, Saba. "Experimental simulation of gear hobbing through a face milling concept in CNC-machine." Thesis, KTH, Materialvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-126804.

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32

Cali, Serdal. "An Experimental Study On Single Crystal Diamond Turning Of Optical Quality Silicon." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12609235/index.pdf.

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Silicon is commonly used in infrared (IR) imaging systems. The surface quality is an important issue in optics manufacturing since surface roughness affects optical performance of imaging systems. Surface quality of an optical component is determined by number of factor, including cutting parameters<br>cutting speed, depth of cut and feed in radial direction. In this thesis, an experimental study has been performed to investigate the relation between cutting parameters and average roughness of the surface of silicon. In the experiments, silicon specimens, which have a diameter of 50 mm, were f

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33

Xu, Shunli. "Modelling the cutting process and cutting performance in abrasive waterjet machining with controlled nozzle oscillation." Queensland University of Technology, 2006. http://eprints.qut.edu.au/16237/.

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Abrasive waterjet (AWJ) cutting is one of the most recently developed manufacturing technologies. It is superior to many other cutting techniques in processing various materials, particularly in processing difficult-to-cut materials. This technology is being increasingly used in various industries. However, its cutting capability in terms of the depth of jet penetration and kerf quality is the major obstruction limiting its further applications. More work is required to fully understand the cutting process and cutting mechanism, and to optimise cutting performance. This thesis presents a comp

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34

Stefánsson, Trausti. "Application of Cryogenic Coolants in Machining Processes : State-of-the-art Literature Study and Experimental Work on Metal Matrix Composite." Thesis, KTH, Industriell produktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-159516.

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Conventional cutting fluids are known for being expensive, polluting and a non-sustainable part of modern manufacturing processes. Global industrial trends are leaning towards environmental and health friendly technologies. Cryogenic cooling is an innovative and sustainable method, capable of replacing conventional oil-based cutting fluids under various conditions. The method has already proved to have a great potential in many different machining setups, performing equally or better than conventional cooling strategies in all criteria concerning machinability. Majority of research work publis

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35

Fahad, Muhammad. "A heat partition investigation of multilayer coated carbide tools for high speed machining through experimental studies and finite element modelling." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/a-heat-partition-investigation-of-multilayer-coated-carbide-tools-for-high-speed-machining-through-experimental-studies-and-finite-element-modelling(dfa40f00-df30-403f-80ae-7533b41bedbd).html.

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High Speed Machining (HSM) is associated with higher cutting velocities and table feedrates and higher material removal rate, lower cutting forces in contrast to conventional machining. HSM can be undertaken dry or near dry and hence it is considered as environmentally friendly machining in relation to the use of cutting fluids. A key challenge in HSM is that, the thermal loads generated during the cutting process can be a major driver of thermally activated wear mechanism and hence affect machining performance. The ability of cutting tools to act as thermal barrier can be a highly desirable p

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36

Boehm, Michael. "EXPERIMENTAL INVESTIGATION OF TWO-PHASE PENETRATING FLOW OF NEWTONIAN AND NON-NEWTONIAN POLYMERIC FLUIDS AND DEVELOPMENT OF PRACTICAL APPLICATIONS IN DRUG/GENE DELIVERY." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253548237.

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37

Srinivasan, Kiran. "Experimental determination of strain rate and flow stress in the primary shear zone while machining AISI 4340 and Ti-6AL-4V." Thesis, Wichita State University, 2010. http://hdl.handle.net/10057/3704.

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Metal cutting subjects the material being cut to high strain rates (103 -106/s) and strains>100% within the primary shear zone (PSZ). This thesis is aimed at quantitative measurement of the strain, strain rate and flow stress in the PSZ in order to provide data that can be used to verify and improve high strain rate material models. An experimental study of the cutting forces, chip thickness, and velocity fields in the PSZ, has been carried out during the cutting of AISI 4340 steel in three different tempers; hot rolled steel, hardness 18HRc, referred to as AISI 4340HR; hot rolled steel with a

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38

Penteado, Ricardo Batista [UNESP]. "Utilização de metaheurísticas combinada a diferentes métodos de aglutinação para a otimização de um processo de torneamento com múltiplas respostas." Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/127950.

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Made available in DSpace on 2015-09-17T15:26:46Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-06-25. Added 1 bitstream(s) on 2015-09-17T15:45:15Z : No. of bitstreams: 1 000846890.pdf: 2695101 bytes, checksum: 2e728ad429716f9dd1defe303887de71 (MD5)<br>As ligas a base de níquel possuem uma composição química com elevado teor de elementos de liga, os quais são responsáveis por suas propriedades mecânicas e térmicas; porém, estas características dificultam demasiadamente o processo de usinagem. Sua vasta utilização nestas áreas deve-se principalmente ao seu desempenho em altas temperatu

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Penteado, Ricardo Batista. "Utilização de metaheurísticas combinada a diferentes métodos de aglutinação para a otimização de um processo de torneamento com múltiplas respostas /." Guaratinguetá, 2015. http://hdl.handle.net/11449/127950.

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Orientador: Messias Borges Silva<br>Coorientador: Marcos Valério Ribeiro<br>Banca: Aneirson Francisco da Silva<br>Banca: José Roberto Dale Luche<br>Banca: Antoni Augusto Chaves<br>Banca: Adriano Francisco Siqueira<br>Resumo: As ligas a base de níquel possuem uma composição química com elevado teor de elementos de liga, os quais são responsáveis por suas propriedades mecânicas e térmicas; porém, estas características dificultam demasiadamente o processo de usinagem. Sua vasta utilização nestas áreas deve-se principalmente ao seu desempenho em altas temperaturas, que é dado por algumas de suas c

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40

Irshad, Muhammad Aatif. "The effect of prior austenite grain size on the machinability of a pre-hardened mold steel. : Measurement of average grain size using experimental methods and empirical models." Thesis, Karlstads universitet, Avdelningen för maskin- och materialteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-8777.

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The use of pre-hardened mold steels has increased appreciably over the years; more than 80% of the plastic mold steels are used in pre-hardened condition. These steels are delivered to the customer in finished state i.e. there is no need of any post treatment. With hardness around ~40HRC, they have properties such as good polishability, good weldability, corrosion resistance and thermal conductivity. Machinability is a very important parameter in pre-hardened mold steels as it has a direct impact on the cost of the mold. In normal machining operations involving intricate or near net shapes, ma

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Silva, Márcio Aurélio da. "Investigação experimental da formação do cavaco na usinagem do aço ABNT 1045 e do ferro fundido nodular." Universidade Federal de Uberlândia, 2008. https://repositorio.ufu.br/handle/123456789/14813.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The chip formation is influenced by several cut parameters which also affect the forces, tensions, powers and temperatures generated during the machining process. Although they have been studied for more than 100 years, still today, the involved mechanisms of deformation are not totally know, due to the fact that the chip formation involves high temperatures and high levels of deformation. This research aims at studying the basic process of chip formation, as well as the influence of the main cut parameters such as cutting speed, f

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42

Alves, Guilherme Carlos. "Estudo experimental de lubrificação e resfriamento no torneamento duro em componentes de grande porte." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/18/18156/tde-11102017-140716/.

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Este trabalho teve como objetivo o estudo experimental de lubrificação e resfriamento no torneamento duro de uma superfície funcional em componentes de grande porte, com aplicação no chão de fábrica. Foram comparadas as técnicas de mínima quantidade de lubrificante e resfriamento abundante, utilizando o método de resposta de superfície. O planejamento tridimensional utilizado foi de dois níveis, adicionado de pontos axiais, ponto central e de réplica. Foram variados a velocidade periférica da peça, o avanço da ferramenta de usinagem e a profundidade de usinagem. Após a execução do experimento,

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Abd, Halim Nor Farah Huda Binti. "An experimental investigation of ultrasonic assisted milling (UAM) of carbon fibre reinforced polymer (CFRP) and the effect of machining on the BMI 5250-4 matrix resin." Thesis, University of Warwick, 2018. http://wrap.warwick.ac.uk/108521/.

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Milling of Carbon Fibre Reinforced Polymer (CFRP) is necessary for component accuracy prior to assembly of aircraft. Recently, ultrasonic assisted milling (UAM) which combines conventional machining (CM) with ultrasonic vibration on the cutting tool, has shown beneficial outcomes with respect to the machinability of some metals, however, limited UAM of CFRP has been reported. In this thesis, milling (CM and UAM) of a CFRP incorporating Bismaleimide 5250-4 (BMI 5250-4) resin was carried out in a wide range of cutting parameters and environments (dry, conventional cutting fluid (CCF) and CO2 cry

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Santos, Marcelo Otávio dos. "Modelagem numérica e experimental dos erros térmicos de um centro de usinagem CNC 5 eixos." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3151/tde-04102018-072516/.

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Esta tese teve por objetivo desenvolver um algoritmo preciso e robusto capaz de compensar os erros térmicos volumétricos de um centro de usinagem 5 eixos em diferentes condições operacionais. O comportamento térmico da máquina foi modelado usando técnicas do método dos elementos finitos (MEF) com base na teoria do calor de atrito e calor de convecção, e validadas através dos vários campos de temperatura obtidos experimentalmente usando termopares e imagens térmicas. Os principais subsistemas da máquina foram inicialmente modelados, como o conjunto de fusos de esferas, guias lineares e motofuso

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Mejri, Seifeddine. "Identification et modélisation du comportement dynamique des robots d'usinage." Thesis, Clermont-Ferrand 2, 2016. http://www.theses.fr/2016CLF22688/document.

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La robotisation des procédés d’usinage suscite l’intérêt des industriels en raison du grand espace de travail et le faible coût des robots par rapport aux machines-outils conventionnelles et la possibilité d’usiner des pièces de formes complexes. Cependant, la faible rigidité de la structure robotique favorise le déclenchement de phénomènes dynamiques liés à l’usinage sollicitant le robot en bout de l’outil qui dégradent la qualité de surface de la pièce usinée. L’objectif de ces travaux de thèse est de caractériser le comportement dynamique des robots en usinage. Ces travaux ont suivi une dém

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Nguyen-Dinh, Ngoc. "Experimental study of the trimming of carbon-epoxy composite : machinability and material integrity." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30059.

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Le détourage est la première opération d’usinage après la fabrication et le démoulage des structures composites. Cette opération, qui est généralement effectuée avec un procédé conventionnel d’enlèvement de matière à l’aide d’un outil de coupe, conduit à l'apparition de plusieurs types d’endommagements qui sont suivi par la génération de particules nocives lors d’un usinage sans lubrification. Ces particules, générées lors de l'usinage à sec de composites constituent une menace sanitaire, car elles peuvent rester en suspension dans l'air et s'infiltrer dans le corps de l'opérateur, représentan

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Nambisan, Jayadev. "EXPERIMENTAL STUDY ON PRESSURE LOSSES IN ADDITIVELY MANUFACTURED AND MACHINED ORIFICES : A rectangular geometry of additively manufactured MA 247 orice and a circular geometry ofmachined AW-6082 T6 orifice study." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-170131.

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Gas turbine components for cooling purposes including other unique and complex three-dimensional designs could be made explicitly possible through additive manufacturing using SLM technology in contrary to the conventional machining processes. Nevertheless, the surface roughness and subsequently the friction factor governs thepressure drop in these components implicitly, thus, influencing the secondary air flow system of a gas turbine. Research studies to understand and predict flow behaviours through especially AM parts are still in a budding stage, and thus, in this scope of thesis, the same

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JESUS, EDILSON R. B. de. "Ferramentas de usinagem em aco rapido AISI M2 obtido por conformacao por 'Spray'." reponame:Repositório Institucional do IPEN, 2004. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11244.

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Made available in DSpace on 2014-10-09T12:49:52Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:03:11Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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Delahaye, Nicolas. "Contribution à l'évaluation des efforts de coupe avec applications au fraisage de finition." Thesis, Artois, 2015. http://www.theses.fr/2015ARTO0202/document.

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L’usinage tient une place considérable dans l’industrie, c’est un des procédés les plus répandu. A ce titre, la maitrise du procédé de fraisage, notamment lors d’une opération de finition, est devenu un enjeu majeur dans le secteur industriel. La compréhension des phénomènes physiques présents lors d’un usinage de finition est un facteur important pour l’optimisation d’un procédé de fabrication par enlèvement de matière.Afin de déterminer les paramètres influents lors d’un usinage de finition, notamment lors d’un fraisage de profil, une nouvelle méthodologie expérimentale sera développée. Ces

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JESUS, FILHO EDSON S. de. "Processamento, usinagem e desgaste de ligas sinterizadas para aplicações automotivas." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11399.

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Made available in DSpace on 2014-10-09T12:51:30Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:02:10Z (GMT). No. of bitstreams: 1 11328.pdf: 13067508 bytes, checksum: 886d399df69a8146f0353092e99aa16a (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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