Monitoring of internal residual strain changes in CFRP using FBG sensors

被引：2

作者：

Takeda, Shin-ichi ^{[1
]}

Koyanagi, Jun ^{[2
]}

Utsunomiya, Shin ^{[1
]}

Kinoshita, Yuto ^{[3
]}

Arao, Yoshihiko ^{[3
]}

Kawada, Hiroyuki ^{[3
]}

机构：

[1] Japan Aerosp Explorat Agcy, Aerosp Res & Dev Directorate, 6-13-1 Osawa, Mitaka, Tokyo 1810015, Japan

[2] Japan Aerosp Explorat Agcy, Inst Space & Aeronaut Sci, Kanagawa 2298510, Japan

[3] Waseda Univ, Dept Mech Engn, Shinjuku ku, Tokyo 1698555, Japan

来源：

FOURTH INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS | 2010年 / 7522卷

关键词：

CFRP; Residual strains; FBG sensors; Physical aging;

D O I：

10.1117/12.851692

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

FBG (Fiber Bragg Grating) sensors were embedded into CFRP unidirectional composite laminates in a direction perpendicular to the carbon fiber. Residual strains after curing were evaluated by the reflection spectrum from the FBGs. The CFRP laminates were kept at 100 degrees C for monitoring of the residual strain change measured by the FBGs. Without mechanical loading, occurrence of physical aging was confirmed by the residual strain changes. The relationship between the influence of physical aging on residual strain and the thickness of the CFRP was almost linear.

引用

页数：7

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