TY - JOUR
T1 - A new approach to predicting multiple damage states in composite laminates with embedded FBG sensors
AU - Yashiro, S.
AU - Takeda, N.
AU - Okabe, T.
AU - Sekine, H.
N1 - Funding Information:
This work was performed as a part of the project of “Civil Aviation Fundamental Technology Program-Advanced Materials & Process Development for Next Generation Aircraft Structures” under the contract of NEDO (New Energy and industrial Technology Development Organization) founded by METI (Ministry of Economy, Trade and Industry), Japan. T.O. acknowledges the support by the Ministry of Education, Culture, Sports, Science and Technology of Japan under Grants-in-Aid for Scientific Research (No. 14750078). One of the authors S.Y. was also supported through the 21st Century COE Program, “Mechanical System Innovation,” by the Ministry of Education, Culture, Sports, Science and Technology. The authors thank Mr. M. Nishikawa (The University of Tokyo) for cooperation in the experiment, and also Mr. T. Mizutani (The University of Tokyo) for great efforts in the optical analysis.
PY - 2005/3
Y1 - 2005/3
N2 - We propose a new approach to predicting multiple damage states in composite laminates using embedded fiber Bragg grating (FBG) sensors. FBG sensors are sensitive to a non-uniform strain distribution along their longitudinal direction, and the effects appear in the power spectrum of the reflected light from the gage section. In this paper, we propose a numerical model to predict both the damage process of the laminate and the change of the reflection spectrum from the FBG sensor. The proposed approach is then applied to explain the results of a quasi-static tensile test for a notched CFRP cross-ply laminate with an embedded FBG sensor. The results demonstrate that the proposed approach is useful for predicting multiple damage states in composite laminates.
AB - We propose a new approach to predicting multiple damage states in composite laminates using embedded fiber Bragg grating (FBG) sensors. FBG sensors are sensitive to a non-uniform strain distribution along their longitudinal direction, and the effects appear in the power spectrum of the reflected light from the gage section. In this paper, we propose a numerical model to predict both the damage process of the laminate and the change of the reflection spectrum from the FBG sensor. The proposed approach is then applied to explain the results of a quasi-static tensile test for a notched CFRP cross-ply laminate with an embedded FBG sensor. The results demonstrate that the proposed approach is useful for predicting multiple damage states in composite laminates.
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U2 - 10.1016/j.compscitech.2004.09.022
DO - 10.1016/j.compscitech.2004.09.022
M3 - Article
AN - SCOPUS:11344275015
SN - 0266-3538
VL - 65
SP - 659
EP - 667
JO - Composites Science and Technology
JF - Composites Science and Technology
IS - 3-4
ER -