Characterization of Self-monitoring Capability of Polymer-matrix Fiber-reinforced Composite Materials and their Reliability and Durability Enhancements

2016 Fiscal Year Final Research Report

• Project/Area Number: 26820002
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Materials/Mechanics of materials
• Research Institution: Japan Aerospace EXploration Agency
• Principal Investigator: TAKEDA Tomo 国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 研究開発員 (70451531)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 複合材料力学 / スマート複合材料 / カーボンナノチューブ / 高分子材料 / 破壊 / 損傷 / 電気伝導 / モニタリング

Outline of Final Research Achievements

The self-monitoring capability of fiber-reinforced composite materials with carbon nanotube (CNT)-based thermosetting polymer adhesive layer was investigated both theoretically and experimentally, in order to improve their reliability and durability. Fracture and fatigue tests were conducted on carbon fiber-reinforced polymer (CFRP) composite laminates bonded using multi-walled nanotube/epoxy adhesives. Electrical resistance measurements were also performed during the tests, and the electrical resistance-crack behavior relationship and the effect of CNT addition on the fracture and fatigue properties of the composites were examined. In addition, an analytical model was developed to describe the electrical resistance change due to crack propagation and was validated by comparing the prediction results with the experimental data. The beneficial results for the development of high performance composite materials and structures were obtained through this study.

Free Research Field

工学