Experimental investigation and parametric optimization of the hole-circularity and taper angle during laser drilling kevlar-29 fiber composite. (2022)

• Record Type: Journal Article
• Authors: Pratap Singh, Kaushal; Bahl, Ankur; Norkey, Gavendra; Dutt Gautam, Girish
• Is Part Of: Materials today. Volume 56:Part 6(2022)
• Page Start: 3325
• Page End: 3329
• Publication Date: 2022
• Subjects: Nd:YAG laser -- Kevlar-29 fiber -- Hole circularity -- Taper angle -- Optimization -- Taguchi methodology; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2021.10.155
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Laser beam drilling (LBD) is the best alternative to the traditional drilling operation in KFRP drilling due to reduced fiber delamination, burr formation, no tool wear and matrix cracking. In this research work, Hole circularity and Taper angle have been observed experimentally at varied settings of the lamp current, pulse frequency and air pressure and during pulsed Nd:YAG laser drilling of 1.2 mm thick Kevlar-29 composite laminate. For understanding and achieving better hole circularity at proper taper angle, series of laser drilling experiments have been performed on a fiber composite. Hole- circularity and taper angle are measured for each laser drilled hole and obtained the optimum parameter by using Taguchi methodology. Based on parametric analysis, it has been found that lamp current is the most significant factor for the hole circularity while air pressure for taper angle is most significant.