Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/27302
Title: Some investigations into wire electrodischarge machining of ceramic particulate reinforced aluminium matrix composites
Researcher: Patil, Nilesh G.
Guide(s): Brahmankar, Prakash K.
Keywords: Metal matrix composites
wire electrical discharge machining
surface characteristics
RSM
grey relational analysis
semi-empirical model
wire breakages
wire shifting
machining strategy
Upload Date: 29-Oct-2014
University: Dr. Babasaheb Ambedkar Technological University
Completed Date: 24/06/2013
Abstract: After more than a quarter of century of active research metal matrix composites and newlinemore particularly aluminium matrix composites are beginning to make a significant newlinecontribution to aerospace automotive and electronic industrial practice Although newlinethese composites have been successfully introduced in few commercial applications newlinetheir potential of wide spread application is still impeded due to the challenges in newlinemachining these materials Although EDM die sinking of these materials was newlineinvestigated by many researchers relatively very less attention was paid toward newlinemachining of these materials using WEDM which is one of the most widely applied newlinenon conventional machining process today The present work is therefore an attempt newlineto investigate and reveal some of the facts associated with machining of these newlinematerials using WEDM newlineThe work was divided into following phases 1 Screening Experiments 2 Parametric newlinestudies on WEDM machinability of A359 and multi objective optimization using newlineRSM and Grey relational analysis 3 Parametric studies on WEDM machinability of newlineA6061 multi objective optimization using RSM and Grey relational analysis 4 newlineComparative study between two types of wire electrode 5 Investigations on surface newlinecharacteristics of the machined part 6 Comparison between machining characteristics of newlinethese two different composites and 7 Development of semi empirical models for MRR newlineand surface finish and comparison between the RSM model and semi empirical model newlinepredictions with the experimental observations newline In the screening experiments Taguchi s experimentation strategy was used In these newlineexperiments nine machining parameters ontime offtime servo voltage maximum newlinefeed speed wire speed wire tension ignition current open voltage and flushing newlinepressure along with one composite specific parameter namely ceramic volume fraction newlinewere included Based on the results of these experiments the input parameters of the newlineparametric study were chosen newlineThe results of multi objective optimization using a novel newlinecombination of RSM and Grey relational analysis were found to be very promising newlineThe material removal rate was found to improve significantly at reasonably smooth newlinesurfaces newlinethis work has contributed to the knowledge of WEDM of composite materials newlineby putting forward the complexities associated with the process during machining of newlinethis most challenging class of materials newline newline newline
Pagination: 306p.
URI: http://hdl.handle.net/10603/27302
Appears in Departments:Department of Mechanical Engineering

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01_title.pdfAttached File75.31 kBAdobe PDFView/Open
02_certificate.pdf111.17 kBAdobe PDFView/Open
03_contents.pdf82.11 kBAdobe PDFView/Open
04_acknowledgement.pdf12.5 kBAdobe PDFView/Open
05_list of tables.pdf119.24 kBAdobe PDFView/Open
06_list of figures.pdf83.73 kBAdobe PDFView/Open
07_list of symbols.pdf57.55 kBAdobe PDFView/Open
08_abstract.pdf19.02 kBAdobe PDFView/Open
09_chapter 1.pdf147.69 kBAdobe PDFView/Open
10_chapter 2.pdf375.24 kBAdobe PDFView/Open
11_chapter 3.pdf498.29 kBAdobe PDFView/Open
12_chapter 4.pdf742.06 kBAdobe PDFView/Open
13_chapter 5.pdf387.12 kBAdobe PDFView/Open
14_chapter 6.pdf839.88 kBAdobe PDFView/Open
15_chapter 7.pdf4.27 MBAdobe PDFView/Open
16_chapter 8.pdf569.98 kBAdobe PDFView/Open
17_chapter 9.pdf186.62 kBAdobe PDFView/Open
18_references.pdf167.5 kBAdobe PDFView/Open
19_appendix a.pdf113.57 kBAdobe PDFView/Open
20_appendix b.pdf247.92 kBAdobe PDFView/Open
21_appendix c.pdf213.7 kBAdobe PDFView/Open
22_appendix d.pdf161.27 kBAdobe PDFView/Open
23_appendix e.pdf139.73 kBAdobe PDFView/Open
24_appendix f.pdf135.61 kBAdobe PDFView/Open
25_appendix g.pdf172.09 kBAdobe PDFView/Open
26_publications.pdf125.03 kBAdobe PDFView/Open


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