TY - JOUR
T1 - Monitoring damage in holed CFRP laminates using embedded chirped FBG sensors
AU - Yashiro, S.
AU - Okabe, T.
AU - Toyama, N.
AU - Takeda, N.
N1 - Funding Information:
We performed this study under the contract “R&D for Structural Integrity Diagnostics”, with RIMCOF, who was entrusted and funded by the Ministry of Economy, Trade and Industry (METI), as a part of the “Advanced Materials and Process Development for Next Generation Structures” project for the “Civil Aviation Fundamental Technology Program” of METI Japan. One of the authors (S.Y.) acknowledges support from the Ministry of Education, Culture, Sports, Science and Technology of Japan under a Grant-in-Aid for Scientific Research (No. 16-10761).
PY - 2007/1/15
Y1 - 2007/1/15
N2 - This study proposes a new approach to monitoring the damage process in holed CFRP laminates using an embedded chirped fiber Bragg grating (FBG) sensor. To this end, we experimentally and numerically investigated the damage process and the damage-induced changes in the spectrum shape. It was experimentally confirmed that multiple types of damage (e.g., splits, transverse cracks and delamination) appeared near a hole, and that the spectrum shape of the embedded chirped FBG sensor changed as the damage extended. Our proposed simulation for the reflection spectrum considering the damage agreed with the experiments. Furthermore, this study investigated the effect of each damage pattern on the changes in the spectrum shape. Finally, based on these discussions, we present simple damage identifications with the embedded chirped FBG for the holed CFRP laminates under completely unloaded conditions.
AB - This study proposes a new approach to monitoring the damage process in holed CFRP laminates using an embedded chirped fiber Bragg grating (FBG) sensor. To this end, we experimentally and numerically investigated the damage process and the damage-induced changes in the spectrum shape. It was experimentally confirmed that multiple types of damage (e.g., splits, transverse cracks and delamination) appeared near a hole, and that the spectrum shape of the embedded chirped FBG sensor changed as the damage extended. Our proposed simulation for the reflection spectrum considering the damage agreed with the experiments. Furthermore, this study investigated the effect of each damage pattern on the changes in the spectrum shape. Finally, based on these discussions, we present simple damage identifications with the embedded chirped FBG for the holed CFRP laminates under completely unloaded conditions.
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U2 - 10.1016/j.ijsolstr.2006.05.004
DO - 10.1016/j.ijsolstr.2006.05.004
M3 - Article
AN - SCOPUS:33750939220
SN - 0020-7683
VL - 44
SP - 603
EP - 613
JO - International Journal of Solids and Structures
JF - International Journal of Solids and Structures
IS - 2
ER -