Biswas, Ranjib and Kuar, A S and Biswas, S K and Mitra, S (2010) Effects of Process Parameters on Hole Circularity and Taper in Pulsed Nd:YAG Laser Microdrilling of Tin-Al2O3 Composites. Materials and Manufacturing Processes , 25 (6). pp. 503-514. ISSN 1042-6914

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Abstract

This study investigates the effect of five parameters on circularity and taper of drilled holes in pulsed Nd:YAG laser microdrilling process. The effect of various process parameters like lamp current, pulse frequency, pulse width, air pressure, and focal length of Nd:YAG laser microdrilling on hole circularity at entry, exit, and taper has been investigated through response surface methodology (RSM)-based experimental study. The significant parameters have been selected based on the analysis of variance (ANOVA). The parametric combination for optimal hole circularity and hole taper has also been evaluated. In micromanufacturing, circularity of a drilled hole at entry, exit, and taper are important attributes which greatly influence the quality of a drilled hole. The drilling operation has been carried out on titanium nitride-alumina (TiN-Al2O3) composite, an important electroconductive ceramic suitable for wear and heating applications.

Item Type:	Article
Uncontrolled Keywords:	ANOVA; Circularity at entry; Circularity at exit; Microdrilling; Nd:YAG laser; Response surface methodology (RSM); Taper; Titanium nitride-alumina composite
Subjects:	Processing Science
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	01 Feb 2012 12:24
Last Modified:	09 Mar 2016 11:04
URI:	http://cgcri.csircentral.net/id/eprint/620

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