Time dependence of mechanical property of triaxial woven CFRP

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420041
• 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: Tokyo University of Science
• Principal Investigator: Koyanagi Jun 東京理科大学, 基礎工学部, 講師 (60386604)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: CFRP

Outline of Final Research Achievements

By means of digital image correlation (DIC) method, time dependence of mechanical property of triaxial woven CFRP is investigated. The triaxl woven CFRP is intended for using in space and it is flexible and behaves as membrane. Although it is conventionally difficult to evaluate the mechanical property because its structure is complecated, employing DIC unable us to do it. One of the remarkable findings obtained in this study is that macro creep strain increases with time under a creep loading condition but fiber directional strain does not. This is due to "scissoring effect" involving woven stractural change. Now we can discuss a long-term durability of the triaxial woven CFRP.

Free Research Field

材料力学