Mechanism of Compressive strength of carbon fiber composite laminates with a notch

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06607
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Sophia University
• Principal Investigator: SUEMASU Hiroshi 上智大学, 理工学部, 教授 (20134661)
• Co-Investigator(Kenkyū-buntansha): 長嶋 利夫 上智大学, 理工学部, 教授 (10338436)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 炭素繊維強化複合材料 / 圧縮 / 積層板 / 強度 / せん断不安定

Outline of Final Research Achievements

Theoretical, Analytical and experimental studies were done to understand possible mechanisms of practical compressive strength of carbon fiber reinforced composite (CFRP) laminates. The theoretical solution is derived to see the stress and displacement field based on the complex stress function method. Finite element analysis considering the damage accumulation and non-elastic constitutive relation was performed. Specimens having an elliptical hole or edge notch were tested to evaluate the effect of the stress concentration and dimensions of notch edge radius on the compressive strength.

Free Research Field

材料力学・複合材料工学