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Analysis of chip formation mechanism in machining of Al/SiCp metal matrix composites

DSpace at IIT Bombay

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Title Analysis of chip formation mechanism in machining of Al/SiCp metal matrix composites
 
Creator DABADE, UA
JOSHI, SS
 
Subject chip formation
size and volume fraction of reinforcement
mmcs
taguchi method
effective shear angle
 
Description Al/SiCp composites are known to cause a significant wear of cutting tools. But, with the use of PCD/CBN tools, machining can be continued over longer time duration. Nevertheless, the problem associated with the quality of machined surfaces such as pit marks and particle pull-out still persists. The quality of surface generated during machining can be easily related to the types of chips formed during machining of Al/SiCp composites as a function of processing conditions and composition of constituents in composites. It is observed from the Taguchi method-based experimentation using L(27) (3(13)) orthogonal array, that in machining of coarser reinforcement composites complete gross fracture takes place causing smaller segments of chips and higher shear plane angle. However, in finer reinforcement composites, secondary crack formation is evident at inner surfaces of the chips formed. Conceptual models illustrating these effects have been arrived at. (C) 2008
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-07-27T16:06:56Z
2011-12-26T12:57:37Z
2011-12-27T05:44:14Z
2011-07-27T16:06:56Z
2011-12-26T12:57:37Z
2011-12-27T05:44:14Z
2009
 
Type Article
 
Identifier JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 209(10), 4704-4710
0924-0136
http://dx.doi.org/10.1016/j.jmatprotec.2008.10.057
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7268
http://hdl.handle.net/10054/7268
 
Language en