Investigation of shear cutting mechanism and its optimization of thermoplastic CFRP laminates

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420022
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Ehime University
• Principal Investigator: OGI Keiji 愛媛大学, 理工学研究科, 教授 (70281194)
• Co-Investigator(Renkei-kenkyūsha): YASHIRO Shigeki 静岡大学, 工学部, 准教授 (00452681)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 損傷力学 / 熱可塑性CFRP / せん断切断

Outline of Final Research Achievements

In this study, shear cutting mechanism of carbon fiber reinforced thermoplastic (CFRP) laminates was clarified through experiment and numerical analysis using a particle method. In addition, shear cutting conditions such as temperature, clearance and cutting blade geometry were optimized. The main result obtained from the above study is as follows: Burrs and matrix cracking are the dominant machining damages while delamination is little observed unlike thermosetting CFRP laminates. Shear cutting with low-machining damage is realized at around the glass transition temperature because shear load required for cutting is decreased and the toughness of the resin increases.

Free Research Field

複合材料工学