Relevant bibliographies by topics / Plastic machining

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Plastic machining'

Author: Grafiati
Published: 28 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Plastic machining"

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Kumar, Raman, Jasgurpreet S. Chohan, and Satbir S. Sehgal. "Non-Conventional Technique of Machining and Metallization of Polymer Components." Recent Patents on Mechanical Engineering 13, no. 4 (October 13, 2020): 378–86. http://dx.doi.org/10.2174/2212797613999200529095224.

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Background: Machining and metal coating of plastics are essential requirements as plastics are overtaking other engineering materials nowadays. Metallization improves product life as well as enhances its surface and mechanical properties. The machining (i.e., cutting, drilling, boring) of plastic parts with conventional processes is difficult as the dimensional accuracy and surface finish cannot be obtained from existing methods or/and needs multiple operations to acquire the surface finish needed. The coating of plastic materials is also a complex method using chemicals and electricity. An innovative method of coating and machining on plastic components has been demonstrated, which would be beneficial for potential researchers. A detailed analysis of previous patents and techniques has been performed based on which an advanced apparatus has been proposed. Objective: The objective of this study was to develop an apparatus based on non-conventional machining techniques. Moreover, the apparatus would be capable of plating metal layer on polymers using chemicals and fine metal particles. An in-depth analysis of previous patents used for the same application has been performed and based on the limitations of already existing techniques. Methods: An apparatus for machining and metal coating of polymers utilizes compressed air at high pressure mixed with chemical vapors. Before compression, the air is filtered to remove the impurities and moisture. Afterwards, heated chemical vapors are mixed with air in a specific proportion for machining of plastic parts. A jet of air and chemical vapours impinges on work material, which would perform machining in two steps. Initially, the chemical vapours would dissolve plastic material, which would instantly melt and starts flowing. Afterwards, the air jet would remove the excess plastic material due to high pressure. On the other hand, metallization can also be performed using different chemicals in proper proportion. Results: The apparatus makes it easy for machining and metalizing the ABS or plastic parts as the process is performed on one apparatus simultaneously one after the other. The high speed jet of acetone vapors has a greater tendency to perform various machining operations like cutting, drilling, boring of ABS parts. These vapours, when mixed with pressurized air, enhance the capability of machining the workpieces. And the metallization of plastic parts provides luster and surface finish to the workpiece. Conclusion: The present invention is to provide an apparatus for effectively plating or coating the machined workpieces. Moreover, the present work provides detailing of an apparatus for improving the mechanical strength, hardness and surface finish of the machined workpiece. In addition to this, the proposed apparatus is enabled to make strong bonding between metal particles and plastics.
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Vasilko, Karol. "Machining with Plastic Cutting Wedge." Manufacturing Technology 15, no. 5 (November 1, 2015): 951–57. http://dx.doi.org/10.21062/ujep/x.2015/a/1213-2489/mt/15/5/951.

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Horváth, Richárd, Róbert Gábor Stadler, and Kristóf Andrásfalvy. "Investigation of Milling of Carbon Fiber Reinforced Plastic." Acta Materialia Transylvanica 2, no. 2 (October 1, 2019): 99–104. http://dx.doi.org/10.33924/amt-2019-02-06.

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Abstract The use of fiber-reinforced plastics has increased significantly in the past decades. Consequently, the demand for finishing and machining of such materials has also escalated. During machining, the fiber-reinforced materials exhibit machining problems dissimilar to the problems of metals. These are fiber pull-out, fiber breakage in the cutting zone, matrix smearing and delamination. The purpose of this experiment is to investigate the characteristics of the resultant force (Fe) dur-ing the milling of carbon fiber reinforced plastic as a function of input machining parameters. For the force measurements, CFR with perpendicular (0°-90°) fiber orientation was machined. The experimental design involved the central composite design method. To analyze and evaluate the measurements, we applied the response surface methodology.
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Cong, W. L., Z. J. Pei, Q. Feng, T. W. Deines, and C. Treadwell. "Rotary ultrasonic machining of CFRP: A comparison with twist drilling." Journal of Reinforced Plastics and Composites 31, no. 5 (March 2012): 313–21. http://dx.doi.org/10.1177/0731684411427419.

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Drilling is involved in many applications of carbon fiber–reinforced plastic composite. Twist drilling is widely used in industry. Rotary ultrasonic machining has been successfully tested to drill holes in carbon fiber–reinforced plastic. However, there are no reports on comparisons between rotary ultrasonic machining and twist drilling of carbon fiber-reinforced plastic. This paper compares rotary ultrasonic machining and twist drilling of carbon fiber–reinforced plastic in six aspects (cutting force, torque, surface roughness, delamination, tool life, and material remove rate). Experimental results show that rotary ultrasonic machining is superior in almost all these aspects.
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Yashiro, Shigeki, and Keiji Ogi. "Experimental study on shear-dominant fiber failure in CFRP laminates by out-of-plane shear loading." Journal of Composite Materials 53, no. 10 (September 24, 2018): 1337–46. http://dx.doi.org/10.1177/0021998318801454.

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Understanding the shear behavior and resulting fiber failure of fiber-reinforced plastics is required for better prediction of their behavior during the machining process, but knowledge regarding the shear strength of fiber failure is limited. In this study, out-of-plane shear tests were conducted to observe the shear behavior of carbon fiber-reinforced plastic laminates subjected to high shear stress exceeding the shear strength of matrix failure. The longitudinal fibers in carbon fiber-reinforced plastic unidirectional laminates were cut by shear loading without severe internal damage and the maximum shear stress causing progressive fiber breaks was much higher than the shear strength of matrix failure. This result suggested the possibility of out-of-plane shearing as a machining method for fiber-reinforced plastics and shear tests were subsequently performed for carbon fiber-reinforced plastic cross-ply laminates. Delamination was generated by high shear stress to cut the reinforcing fibers, but the size of the remaining damage was small even in the thermoset carbon fiber-reinforced plastic laminates in which delamination likely occurs, without any optimization of the trimming conditions.
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Khandozhko, Alexandr, Andrey Shcherbakov, Leonid Zakharov, and Alexsandr Alen’kin. "Technical support of plastic product machining quality." Science intensive technologies in mechanical engineering 2020, no. 6 (June 14, 2020): 37–41. http://dx.doi.org/10.30987/2223-4608-2020-6-37-41.

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The investigation results of plastic cutting are shown. The results of single-factor and multi-factor experiments on plastic cutting by multi-toothed milling cutters are stated. There are shown empirical equations of the roughness parameter correlation of the surface Ra and the height of the barb h from cutting modes: feed, speed and tooth number in a milling cutter.
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Caggiano, Alessandra. "Machining of Fibre Reinforced Plastic Composite Materials." Materials 11, no. 3 (March 18, 2018): 442. http://dx.doi.org/10.3390/ma11030442.

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Kaneeda, Toshiaki, Seiichi Yokomizo, Akio Miwa, Kazuta Mitsuishi, Yoshiyuki Uno, and Hiroyuki Morioka. "Biochemical machining — biochemical removal process of plastic." Precision Engineering 21, no. 1 (July 1997): 57–63. http://dx.doi.org/10.1016/s0141-6359(97)80001-3.

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Заостровский, А., A. Zaostrovskiy, А. Приемышев, A. Priyomyshev, Ю. Зубарев, and Yu Zubarev. "Peculiarities in technology of coal-plastic machining." Science intensive technologies in mechanical engineering 1, no. 5 (April 30, 2016): 30–33. http://dx.doi.org/10.12737/18712.

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At present polymeric composite materials (PCM) substitute more and more wider metal in various branches of mechanical engineering. But the mechanical engineering of such materials with an edge tool causes considerable difficulties, as it differs in principle from common steel and alloy machining. A significant factor in choice of cutting modes and tool application and, as a consequence of a chip forming at PCM machining is a fiber orientation taking into account a cutting direction. The paper reports the results of researches in edge working by different tools with antifriction coal-plastic.
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Chen, Guang Jun, Xian Li Liu, and Cai Xu Yue. "Study on Causes of Material Plastic Side Flow in Precision Hard Cutting Process." Advanced Materials Research 97-101 (March 2010): 1875–78. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1875.

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There are many special cutting disciplines needed to research in precision hard cutting process. The plastic side flow on machining surface influences machining surface roughness great. The mathematical model of hump height for surface plastic side flow is built based on the model of precision hard cutting and forming mechanism of surface plastic side flow is analyzed. Effect of cutting feed on the maximum scallop height of machining surface is researched and microscopic observation of surface topography is made through the hard cutting experiment. In certain conditions, the machining surface roughness and the cutting off trace increase with cutting feed. Because of the metal softening, some metal which formed side flow fall off immediately but make plastic flow on the strip edge of machining surface when it flows out tool surface. This research supplied theoretical basis for prediction of hard cutting process surface quality.
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Dissertations / Theses on the topic "Plastic machining"

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Ilyas, Ismet Priana. "Production of plastic injection moulding tools using selective laser sintering and high speed machining." Thesis, University of Leeds, 2007. http://etheses.whiterose.ac.uk/4048/.

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Global manufacturing trend and competition challenge every industry to seek new manufacturing methods to improve their business processes and speed up the product development cycle [Conolly, 2004a and Knights, 2001]. Among the candidates, layer manufacturing (LM) technologies appear to be a potential solution [Plam, 2002, and Grimm, 2004]. Recent LM technologies have led to a demanding application for developing production tools to manufacture parts, known as rapid tooling (RT). Selective laser sintering (SLS) is one of the leading LM systems available today in RT to manufacture injection mould (core/cavity) inserts [Kruth, 1998, Chua, 1999, Dormal, 1999, and Grenda, 2005]. However, the current capabilities of the SLS in producing metal parts have not yet fulfil the requirements of the injection mould inserts, especially in dimensional accuracy and surface finish quality [Francis, 2002 and Dalgamo, 2001 a]. The aim of this research is to use indirect SLS and high speed machining (HSM) in developing production-quality plastic injection moulding (core/cavity) inserts. The idea is that the indirect SLS process is utilised to build a near-net-shape inserts, while HSM is then utilised to finish the inserts to production specifications. Benchmark studies have been carried out to characterise the capabilities of both SLS and HSM with reference to the typical requirements of injection mould inserts. Utilising the study results, new developments of the mould inserts have been implemented on three major industrial case studies. Their performances have been evaluated and measured by comparing them with its respective original inserts. Furthermore, a set of design rules has been derived from best practices of the case studies, and have been validated by developing a new design for each case studies inserts. The results have demonstrated that the indirect SLS process has a capability III manufacturing a near-net shape of the insert which requires further related finishing to achieve final production specifications. The insert performances in some case studies have indicated significant improvements in process productivity and energy consumption as well as economic benefits to using the inserts. Regarding the significant considerations in realising the design, a recommendation on further strategic design rules and manufacturing process are highlighted so that the development of the insert using the selected approach can be more effective and efficient. Moreover, a utilisation of computer analysis software and further durability trial is also highlighted in order to predict and evaluate the optimum overall performance.
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Kirk, Dean Frederick. "Development of a Small Envelope Precision Milling Machine." Thesis, University of Canterbury. Mechanical Engineering, 2006. http://hdl.handle.net/10092/2773.

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The credit card industry is huge with over two and a half billion cards shipped annually. A local card manufacturer, with a production volume in excess of forty million cards annually, approached the University of Canterbury to design and develop advanced card manufacturing technology. The motivation behind this development was the desire of the sponsoring company to keep abreast of new technologies and to have the ability to manufacture and supply cards with this new and emerging technology into a highly competitive world market. This thesis reports the research surrounding the development of a dedicated new machine tool explicitly designed to implement the emerging technologies found in the international credit card industry. The machine tool, a dedicated milling machine, was not developed in its entirety within these pages; however, three major constituents of the machine were researched and developed to a point where they could be implemented or become the subject of further research. The three areas of interest were; • A machine table system that avoided the increased zonal wear to which linear bearings are subject, typically due to short high frequency traversals, and also the high friction and mass generally found in dovetail slides. • Design requirements demanded the use of a single commercially available carbide cutter to produce 1500 components per hour. Therefore, a purpose built high (revs per minute) rpm spindle and drive system specifically for use with polymeric materials, (R-PVC in particular) was deemed necessary. • Tracking the cutter depth in relation to an RFID aerial track embedded within the credit card core. The aerial tracking was to be dynamic and occur during the machining process with the machine “remembering” the depth of cut at contact with the aerial. Each of the three areas was researched via an in-depth literature review to determine what and if any material had been published in these fields. For the development of the machine table a novel flexure hinge idea was considered. Considerable material was discovered about flexures, but very little was found to be relevant to the application of high displacement metal flexures necessary to meet the required levels of table movement. In effect the proposed machine table system and research in this field would be novel. The high performance spindle investigation became directed into a much narrower focus as it progressed; that of determining the power consumption required to machine the integrated circuit pockets in an R-PVC work piece. This was due to the lack of information pertaining to the physical properties of polymeric materials, in particular the specific cutting pressure. The depth following sensor array was configured using capacitance detection methods to determine the distance between the cutter?s end and the aerial tracks. Capacitance sensing methods, whilst not new, were developed into a novel arrangement to meet the specific cutter tracking requirements of the proposed new machine tool. Each of the respective development areas had concept designs completed and were prototyped before being tested to determine the effectiveness of the respective designs. The outcomes from the testing are reported herein, and show each constituent part to be basically feasible, in the application. The results were sufficient to indicate that each development showed distinct potential but further development and integration into the machine tool should ensue.
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Zhang, Hong. "Plastic deformation and chip formation mechanisms during machining of copper, aluminum and an aluminum matrix composite." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ62306.pdf.

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Sýkora, Petr. "Konstrukce jednoúčelového stroje na opracování polyuretanových odlitků." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443160.

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The aim of this diploma thesis is to design a single-purpose machine for machining steering wheel lever from PUR. The problem with the current state was the need of manpower for machine a large number of levers. The automated machining process eliminates the problem. The result of the work is a detailed 3D model of a single-purpose machine created in the Onshape program, drawing documentation of several parts of the equipment, economic evaluation and risk analysis of the machine. The conclusion of the thesis contains an evaluation of the whole project.
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Kalous, Ondřej. "Racionalizace technologie výroby forem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231505.

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The diploma thesis Rationalization technology of production tools is divided into two parts. The first part is focused on injection molding of plastic materials and analysis current status of production injection tools. The second part contains proposal of rationalization steps in the production process and evaluation of rationalization.
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Arola, Dwayne Dale. "The influence of net shape machining on the surface integrity of metals and fiber reinforced plastics /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/7138.

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Heiderscheit, Timothy Donald. "Comparative study of near-infrared pulsed laser machining of carbon fiber reinforced plastics." Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5946.

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Carbon fiber-reinforced plastics (CFRPs) have gained widespread popularity as a lightweight, high-strength alternative to traditional materials. The unique anisotropic properties of CFRP make processing difficult, especially using conventional methods. This study investigates laser cutting by ablation as an alternative by comparing two near-infrared laser systems to a typical mechanical machining process. This research has potential applications in the automotive and aerospace industries, where CFRPs are particularly desirable for weight savings and fuel efficiency. First, a CNC mill was used to study the effects of process parameters and tool design on machining quality. Despite high productivity and flexible tooling, mechanical drilling suffers from machining defects that could compromise structural performance of a CFRP component. Rotational feed rate was shown to be the primary factor in determining the axial thrust force, which correlated with the extent of delamination and peeling. Experimental results concluded that machining quality could be improved using a non-contact laser-based material removal mechanism. Laser machining was investigated first with a Yb:YAG fiber laser system, operated in either continuous wave or pulse-modulated mode, for both cross-ply and woven CFRP. For the first time, energy density was used as a control variable to account for changes in process parameters, predicting a logarithmic relationship with machining results attributable to plasma shielding effects. Relevant process parameters included operation mode, laser power, pulse overlap, and cross-ply surface fiber orientation, all of which showed a significant impact on single-pass machining quality. High pulse frequency was required to successfully ablate woven CFRP at the weave boundaries, possibly due to matrix absorption dynamics. Overall, the Yb:YAG fiber laser system showed improved performance over mechanical machining. However, microsecond pulses cause extensive thermal damage and low ablation rates due to long laser-material interaction time and low power intensity. Next, laser machining was investigated using a high-energy nanosecond-pulsed Nd:YAG NIR laser operating in either Q-Switch or Long Pulse mode. This research demonstrates for the first time that keyhole-mode cutting can be achieved for CFRP materials using a high-energy nanosecond laser with long-duration pulsing. It is also shown that short-duration Q-Switch mode results in an ineffective cutting performance for CFRP, likely due to laser-induced optical breakdown. At sufficiently high power intensity, it is hypothesized that the resulting plasma absorbs a significant portion of the incoming laser energy by the inverse Bremsstrahlung mechanism. In Long Pulse mode, multi-pass line and contour cutting experiments are further performed to investigate the effect of laser processing parameters on thermal damage and machined surface integrity. A logarithmic trend was observed for machining results, attributable to plasma shielding similar to microsecond fiber laser results. Cutting depth data was used to estimate the ablation threshold of Hexcel IM7 and AS4 fiber types. Drilling results show that a 2.2 mm thick cross-ply CFRP panel can be cut through using about 6 laser passes, and a high-quality machined surface can be produced with a limited heat-affected zone and little fiber pull-out using inert assist gas. In general, high-energy Long Pulse laser machining achieved superior performance due to shorter pulse duration and higher power intensity, resulting in significantly higher ablation rates. The successful outcomes from this work provide the key to enable an efficient high-quality laser machining process for CFRP materials.
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Machado, Carla Maria Moreira. "Empirical models for quantification of machining damage in composite materials." Doctoral thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/9058.

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Dissertação para obtenção do Grau de Doutor em Engenharia Mecânica
The tremendous growth which occurs at a global level of demand and use of composite materials brings with the need to develop new manufacturing tools and methodologies. One of the major uses of such materials, in particular plastics reinforced with carbon fibres, is their application in structural components for the aircraft industry with low weight and high stiffness. These components are produced in near-final form but the so-called secondary processes such as machining are often unavoidable. In this type of industry, drilling is the most frequent operation due to the need to obtain holes for riveting and fastening bolt assembly of structures. However, the problems arising from drilling, particularly the damage caused during the operation, may lead to rejection of components because it is an origin of lack of resistance. The delamination is the most important damage, as it causes a decrease of the mechanical properties of the components of an assembly and, irrefutably, a reduction of its reliability in use. It can also raise problems with regard to the tolerances of the assemblies. Moreover, the high speed machining is increasingly recognized to be a manufacturing technology that promotes productivity by reducing production times. However, the investigation whose focus is in high speed drilling is quite limited, and few studies on this subject have been found in the literature review. Thus, this thesis aims to investigate the effects of process variables in high speed drilling on the damage produced. The empirical models that relate the delamination damage, the thrust force and the torque with the process parameters were established using Response Surface Methodology. The process parameters considered as input factors were the spindle speed, the feed per tooth, the tool diameter and the workpiece thickness. A new method for fixing the workpiece was developed and tested. The results proved to be very promising since in the same cutting conditions and with this new methodology, it was observed a significant reduction of the delamination damage. Finally, it has been found that is possible to use high speed drilling, using conventional twist drills, to produce holes with good quality, minimizing the damage.
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Dupák, Libor. "Mikroobrábění nekovových materiálů elektronovým svazkem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-234155.

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The thesis deals with electron beam micromachining of nonmetallic materials like glass, ceramics and plastics. A brief description of the device on which the experiments were carried out is included; the author has participated on its development. Main topic is experimental study of influence of main electron beam parameters on results of machining. Examined parameters include accelerating voltage, beam current, focusing and speed of machining. Influence of beam deflection is analyzed. Method of sequential machining by repeated passes of the electron beam is presented. Main examined materials are quartz glass, alumina and selected plastics. The usefulness of the technology is shown by several practical applications.
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Škeřík, Filip. "Hodnocení vlivu technologií obrábění na analýzu textury povrchu technických plastů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443214.

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The diploma thesis deals with the influence of machining technologies (turning, milling, grinding and polishing) on the surface texture of functional surfaces of selected materials from technical plastics. In the first part of the thesis there is a theoretical analysis of the possibilities of machining plastic materials. Furthermore, an analysis of the most commonly used parameters for evaluating the roughness of the machined surface and their effect on functionality is performed. The experimental part of the thesis describes samples preparation, analysis of measured data and subsequent evaluation with benefits for machinery industry.
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Books on the topic "Plastic machining"

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Reimann, Wolfgang. Hochgeschwindigkeitsfräsen von kohlenstoffaserverstärkten Kunststoffen. München: C. Hanser, 1991.

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Ullmann, Falk. Temperaturbestimmung beim Drehen faserverstärkter Kunststoffe. München: C. Hanser, 1992.

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Book chapters on the topic "Plastic machining"

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Astakhov, Viktor P. "Submicro and Nanostructuring of Materials by Severe Plastic Deformation." In Materials Forming, Machining and Tribology, 1–40. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20152-8_1.

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Mohamed, Saiful Bahri, Radzuwan Ab Rashid, Martini Muhamad, and Jailani Ismail. "Composite Materials and Types of Machining." In Down Milling Trimming Process Optimization for Carbon Fiber-Reinforced Plastic, 1–14. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1804-7_1.

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Brecher, Christian, Dominik Lindemann, Michael Merz, Christian Wenzel, and Werner Preuß. "Freeform Machining of Molds for Replication of Plastic Optics." In Lecture Notes in Production Engineering, 41–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-33001-8_4.

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Yang, Ji Chang, Jian Zhong Zhou, Yong Kang Zhang, Su Min Yin, Ai Xin Feng, and Dun Wen Zuo. "Ultra-Speed Plastic Deformation of TC6 Sheet Induced by Laser Shock Loading." In Advances in Machining & Manufacturing Technology VIII, 612–16. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-999-7.612.

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Cheng, Ji-Yen, Kai-Hsiung Hsu, Cheng-Wey Wei, and Tai-Horng Young. "Innovative Laser Machining and Surface Modification for Plastic Microfluidic Chip." In Micro Total Analysis Systems 2002, 407–9. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0295-0_136.

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Oteny, Ya N., E. V. Morozova, and V. F. Kazak. "Research of Temperature Phenomena During Machining Surface Plastic Deformation of Detail." In Proceedings of the 4th International Conference on Industrial Engineering, 1793–99. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95630-5_192.

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Dutta, Hrishikesh, Kishore Debnath, and Deba Kumar Sarma. "A Study of Wire Electrical Discharge Machining of Carbon Fibre Reinforced Plastic." In Lecture Notes on Multidisciplinary Industrial Engineering, 451–60. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9471-4_36.

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Li, Jia, and Qihong Fang. "Investigation into Plastic Deformation and Machining-Induced Subsurface Damage of High-Entropy Alloys." In Springer Tracts in Mechanical Engineering, 23–52. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-3335-4_2.

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Miller, Richard K. "Plastics Machining." In Industrial Robot Handbook, 449–50. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-6608-9_44.

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Azmi, H., C. H. Che Haron, Z. A. Zailani, R. Hamidon, M. S. Bahari, S. Zakaria, and S. H. A. Hamid. "Study the Effect of Cutting Parameter in Machining Kenaf Fiber Reinforced Plastic Composite Materials Using DOE." In Lecture Notes in Mechanical Engineering, 401–12. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0866-7_35.

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Conference papers on the topic "Plastic machining"

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Ruixia, Guo, and Wen Junwei. "Research on Plastic Design Method of Reinforced Concrete Flexural Component." In Proceedings of the 2019 International Conference on Precision Machining, Non-Traditional Machining and Intelligent Manufacturing (PNTIM 2019). Paris, France: Atlantis Press, 2019. http://dx.doi.org/10.2991/pntim-19.2019.95.

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Cong, W. L., Q. Feng, Z. J. Pei, T. W. Deines, and C. Treadwell. "Dry Machining of Carbon Fiber Reinforced Plastic Composite by Rotary Ultrasonic Machining: Effects of Machining Variables." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50116.

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Rotary ultrasonic machining (RUM) has been used to drill holes in brittle, ductile, and composite materials. However, all these experiments were conducted with help of water or oil based coolant. This paper presents an experimental study on RUM of carbon fiber reinforced plastic (CFRP) composite using cold air as coolant. It reports effects of machining variables (ultrasonic power, spindle speed, and feedrate) on outputs (cutting force, torque, surface roughness, and burning) in RUM of CFRP using vortex-tube (VT) generated cold air as coolant.
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Fisher, David, and Ron Hofmann. "CNC machining plastic injection mold plates in the classroom." In 2007 37th annual frontiers in education conference - global engineering: knowledge without borders, opportunities without passports. IEEE, 2007. http://dx.doi.org/10.1109/fie.2007.4417886.

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Mitalova, Zuzana, Vladimir Simkulet, Jozef Zajac, Svetlana Radchenko, Pavol Radic, Igor Olexa, and Juliana Litecka. "Surface quality of Wood Plastic Composite material after machining." In 2nd EAI International Conference on Management of Manufacturing Systems. EAI, 2018. http://dx.doi.org/10.4108/eai.22-11-2017.2274317.

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Swaminathan, Srinivasan, M. Ravi Shankar, Balkrishna C. Rao, Travis L. Brown, Srinivasan Chandrasekar, W. Dale Compton, Alexander H. King, and Kevin P. Trumble. "Nanostructured Materials by Machining." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81242.

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Large strain deformation, a key parameter in microstructure refinement by Severe Plastic Deformation (SPD) processes, is a common feature of chip formation in machining. It is shown that the imposition of large plastic strains by chip formation can create metals and alloys with nanocrystalline or ultra-fine grained microstructures. The formation of such nanostructured materials is demonstrated in a wide variety of material systems including pure metals, light-weight aluminum alloys, and high strength steels and alloys. Nanocrystalline microstructures with different morphologies are demonstrated. The hardness and strength of the nanostructured chips are significantly greater than that of the bulk material. The production of nanostructured chips by machining, when combined with comminution and powder processing methods, may be expected to lead to the creation of a number of advanced materials with new and interesting combinations of properties. These materials are expected to find wide-ranging applications in the discrete products sector encompassing ground transportation, aerospace and bio-medical industries.
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Polishetty, Ashwin, and Guy Littlefair. "Recent Advances in Machining of Austempered Ductile Iron to Avoid Machining Induced Microstructural Phase Transformation Reaction." In ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/msec2014-3903.

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Austempered Ductile Iron (ADI) is a type of nodular, ductile cast iron subjected to heat treatments — austenitising and austempering. Whilst machining is conducted prior to heat treatment and offers no significant difficulty, machining post heat treatment is demanding and often avoided. Phase transformation of retained austenite to martensite leading to poor machinability characteristics is a common problem experienced during machining. Study of phase transformations is an investigative study on the factors — plastic strain (εp) and thermal energy (Q) which effect phase transformations during machining. The experimental design consists of face milling grade 1200 at variable Depth of Cut (DoC) range from 1 to 4 mm, coolant on/off, at constant speed, 1992 rpm and feed rate, 0.1 mm/tooth. Plastic strain (εp) and martensite content (M) at fracture point for each grade was evaluated by tensile testing. The effect of thermal energy (Q) on phase transformations was also verified through temperature measurements at DoC 3 and 1 mm using thermocouples embedded into the workpiece. Finally, the amount of plastic strain (εp) and thermal energy (Q) responsible for a given martensite increase (M) during milling was related and calculated using a mathematical function, M = f (εp, Q). The future work of the thesis involves an in-depth study on the new link discovered through this research: mathematical model relating the role of plastic strain and thermal energy in martensite formation.
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Li, Z. L., P. L. Chu, H. Y. Zheng, G. C. Lim, L. Li, S. Marimuthu, R. Negarestani, M. Sheikh, and P. Mativenga. "Process development of laser machining of carbon fibre reinforced plastic composites." In ICALEO® 2008: 27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. Laser Institute of America, 2008. http://dx.doi.org/10.2351/1.5061315.

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Salilkumar, Vandana A., and Narayan K. Sundaram. "Simulation of Complex Plastic Flows in Machining of Metal Polycrystals Using Remeshing." In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8255.

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Abstract The simulation of machining of soft metals at the 100 microns-few mm length-scale requires capturing complex flow physics induced by the high ductility and polycrystalline aggregate nature of these metals. This work presents a remeshing and mesh-to-mesh transfer approach that can successfully simulate complex flows including highly sinuous flow with surface folding in polycrystalline aggregate cutting. The meshing scheme is both graded and adaptive, with the ability to automatically refine regions such as self-contacts. Notably, the presence of microstructure makes these simulations far more complex than their homogeneous counterparts, with several additional constraints on the remeshing algorithm. The approach is general, with no limitations on rake angle, grain-size, or friction coefficient, and does not use an artificial, predefined separation layer. The scheme accurately tracks individual grains and allows grain splitting in a manner consistent with imaging experiments. The plastic strain field, cutting-force evolution, and deformed grain shape from several annealed-copper cutting simulations are presented, representing a range of rake angles and friction coefficients as high as 0.5. The simulations accurately capture the thick chips, high cutting force, and highly undulating streaklines of flow that characterize sinuous flow, as well as the experimental observation that the sinuous flow is suppressed on using a high rake-angle for the cutting. Moreover, in grains that are split between the chip and residual surface, we can accurately capture the extreme grain stretching that is observed prior to splitting in imaging experiments. Remeshing also provides a way to accurately capture the residual surface plastic strains and strain gradients. The latter are particularly steep, with the strain falling from a value greater than 10 to 2 within a distance of 30 microns. The use of remeshing has numerous advantages over a predefined separation layer, including the fact that one can parametrically explore the effect of variables like the extent of yield stress inhomogeneity on the flow pattern with no limitations. Interestingly, the technique allows us to find the actual line of material separation in such cutting processes: As opposed to a horizontal line, this is typically an undulating curve with a deviation of about 0.06 of the undeformed chip thickness on either side of the horizontal. This fraction increases with the extent of sinuous flow. A simple, pseudograin model with spatial inhomogeneity in flow stress is used to represent the microstructure in the present work, but the present scheme can easily be used with more complex microstructural models as well.
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Mulczyk, Krystian, Szymon Tofil, and Bogdan Antoszewski. "Machining properties of UV laser marker in shaping surface structures on plastic elements." In Thirteenth Symposium on Laser Technology, edited by Ryszard S. Romaniuk and Jan K. Jabczynski. SPIE, 2018. http://dx.doi.org/10.1117/12.2516566.

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Song, Huawei, Junfeng Xiao, Jialun Li, Jinqi Dan, Xiao Chen, and Jianfeng Xu. "Machining of Fused Silica Using Pulsed Laser Heating Assistance." In ASME 2018 13th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/msec2018-6359.

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Fused silica is difficult to machine through conventional machining, mainly due to its high brittleness and strength, low fracture toughness and poor plastic deformation. This study was attempted to explore the machinability of fused silica with laser-assisted machining by heating workpiece through a pulse CO2 laser beam. During the LAM of fused silica, the bonding and wavelike texture on the machined surface indicated the behavior change of material deformation by the local heating in front of the cutting tool. The semi-continuous chips were obtained as an evidence of material removal mechanism which was a hybrid of quasi plastic deformation and brittle fracture. Moreover, the machinability of fused silica was evaluated. The experimental results demonstrated that considerable improvement in the machinability of fused silica was achieved such as better surface roughness, smaller cutting force as well as lower tool wear.
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