Kannan C

Department of Automotive Engineering

School of Mechanical Engineering

Vellore Campus

Janakiraman A

Pemmasani S

Sheth S

Balan A.S.S.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Journal of The Institution of Engineers (India): Series C

Drilling holes in carbon fiber-reinforced polymer (CFRP) laminates are more prone to incur damage during machining. Surface damage could be considerably minimized through the adoption of cryogenic assisted machining. The economic and safety implications associated with cryogenic technology necessitate the exploration of alternate technologies. In this research work, the effects of cutting velocity (100, 125 and 150 m/min) and feed rate (0.03, 0.06 and 0.09 mm/rev) on thrust force, surface roughness, delamination and acoustic emissions are studied during the drilling of CFRP laminates under chilled air environment and compared with dry drilling. The output parameters are found to be much influenced by feed rate than cutting velocity. Under high feed rate and cutting velocity, the delamination factor, surface roughness and acoustic emissions are, respectively, reduced by 13.2, 10.5 and 7.4{\%} for the drilling performed under chilled air environment over dry condition. About 9.9{\%} increased thrust force is observed for chilled air-assisted drilling under the identical machining condition.

Materials and Manufacturing Processes

Assessment of drilling-induced damage in CFRP under chilled air environment

Exemplary mechanical properties made carbon fiber reinforced polymer (CFRP) laminates to find their place in automotive, defence and process industries. In this work, a comprehensive investigation is carried out on the vibration, thrust force, fiber pull-out, surface roughness and delamination while drilling CFRP laminates. The drilling is accomplished with different cutting velocities and feed rates under two environment viz. dry and chilled air. The investigation revealed the dominance of feed rate over cutting velocity on the measured output parameters. Drilling-induced vibrations are found to be increasing with increased feed rates. Under identical machining condition, chilled air environment could reduce the delamination factor to the maximum of about 19.49% and thus helps in mitigating the delamination and achieving good quality drilled holes. © 2018 IOP Publishing Ltd.

Materials Research Express

Effect of chilled air on delamination, induced vibration, burr formation and surface roughness in CFRP drilling: a comparative study

Composite Structures

Effect of machining parameters and cutting tool coating on hole quality in dry drilling of fibre metal laminates

Journal of Reinforced Plastics and Composites

Forming and drilling of fiber metal laminates – A review

Arabian Journal for Science and Engineering

Optimization of Machining Conditions for Surface Quality in Milling AA7039-Based Metal Matrix Composites

Experimental Investigation and Parametric Optimization on Hole Quality Assessment During Drilling of CFRP/GFRP/Al Stacks

Journal	Data powered by TypesetJournal of The Institution of Engineers (India): Series C
Publisher	Data powered by TypesetSpringer Science and Business Media LLC
ISSN	2250-0545
Open Access	0