Shear Cutting Behaviors in Thermosetting and Thermoplatic CFRP Laminates

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Abstract:

This paper presents shear cutting behaviors in thermosetting and thermoplastic CFRP laminates. Cross-ply laminates were fabricated from unidirectional thermosetting and thermoplastic CFRP prepregs for shear cutting tests. The tests were conducted by using three upper blades (Blades A, B and C) with different clearance and shearing angles at room and elevated temperatures up to around the glass transition temperature Tg. The cross-sections near the cutting surfaces were observed to quantitatively measure the length of burrs and removal part. In addition, double cantilever beam (DCB) tests were performed to measure mode I interlaminar fracture toughness of the thermosetting CFRP at various temperatures. It was found that the optimum cutting for the thermosetting CFRP is achieved by using Blade C at a temperature of 70 OC, which is slightly lower than Tg. However, optimum cutting conditions are not proposed for the thermoplastic CFRP yet since the dominant parameters are not always identified under the conditions within the present study.

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Periodical:

Key Engineering Materials (Volumes 656-657)

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347-352

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Online since:

July 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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