TY - GEN
T1 - Effect of thermal residual stress on FBG sensors embedded in composite T-stiffened panels
AU - Zhou, Yujing
AU - Liu, Gang
AU - Li, Xueqin
AU - Yi, Xiaosu
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - The reflection spectrum from the Fiber Bragg Grating (FBG) sensors embedded in the composite was disturbed because of the thermal residual stress. In this study, two types of the FBG sensors, uncoated and UV-cured resin coated FBG sensors, were embedded in the triangle area of the T-stiffened composite panels. The strains during the curing process were measured by these two kinds of FBG sensors. Through the comparison of the results, it was found that the effect of thermal residual stress on the reflection spectrum could be attenuated when the FBG sensor was coated with UV-cured resin. Furthermore, the strain responses during the low-velocity impact test were observed by both two FBG sensors. The maximum-strain measured by the coated FBG sensors was more accurately than that measured by the uncoated one.
AB - The reflection spectrum from the Fiber Bragg Grating (FBG) sensors embedded in the composite was disturbed because of the thermal residual stress. In this study, two types of the FBG sensors, uncoated and UV-cured resin coated FBG sensors, were embedded in the triangle area of the T-stiffened composite panels. The strains during the curing process were measured by these two kinds of FBG sensors. Through the comparison of the results, it was found that the effect of thermal residual stress on the reflection spectrum could be attenuated when the FBG sensor was coated with UV-cured resin. Furthermore, the strain responses during the low-velocity impact test were observed by both two FBG sensors. The maximum-strain measured by the coated FBG sensors was more accurately than that measured by the uncoated one.
KW - FBG sensors
KW - Low-velocity impact
KW - Residual strain
KW - T-stiffened panel
UR - http://www.scopus.com/inward/record.url?scp=84863121483&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.152-154.1550
DO - 10.4028/www.scientific.net/AMM.152-154.1550
M3 - Conference contribution
AN - SCOPUS:84863121483
SN - 9783037853528
T3 - Applied Mechanics and Materials
SP - 1550
EP - 1554
BT - Mechanical Engineering and Materials
T2 - 2012 International Conference on Mechanical Engineering and Materials, ICMEM 2012
Y2 - 15 January 2012 through 16 January 2012
ER -