A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Monitoring of water absorption in CFRP laminates using embedded fiber Bragg grating sensors
Practical monitoring technologies are needed for evaluating water absorption/desorption in actual CFRP structures. In this study, the monitoring of water absorption in laminated CFRPs was demonstrated by a simple evaluation using fiber Bragg grating (FBG) sensors. The swelling strain and coefficient of moisture expansion (CME) of unidirectional (UD) laminates were estimated from the axial strain of FBGs. The measured swelling strains of cross-ply laminates agreed with that obtained from transient swelling analysis using the results of UD laminates. The swelling analysis showed that the change in the axial strain of FBG represents the swelling strain of the laminated CFRP. Moreover, another evaluation method employing changes in the FBG spectrum was proposed, and noted its possibility for laminated CFRP with almost 0 in-plane swelling strain. The present results suggested that the FBG measurement technique is useful for monitoring of water absorption in CFRP.
Monitoring of water absorption in CFRP laminates using embedded fiber Bragg grating sensors
Practical monitoring technologies are needed for evaluating water absorption/desorption in actual CFRP structures. In this study, the monitoring of water absorption in laminated CFRPs was demonstrated by a simple evaluation using fiber Bragg grating (FBG) sensors. The swelling strain and coefficient of moisture expansion (CME) of unidirectional (UD) laminates were estimated from the axial strain of FBGs. The measured swelling strains of cross-ply laminates agreed with that obtained from transient swelling analysis using the results of UD laminates. The swelling analysis showed that the change in the axial strain of FBG represents the swelling strain of the laminated CFRP. Moreover, another evaluation method employing changes in the FBG spectrum was proposed, and noted its possibility for laminated CFRP with almost 0 in-plane swelling strain. The present results suggested that the FBG measurement technique is useful for monitoring of water absorption in CFRP.
Monitoring of water absorption in CFRP laminates using embedded fiber Bragg grating sensors
Takeda, Shin-ichi (author) / Tsukada, Takuhei (author) / Sugimoto, Sunao (author) / Iwahori, Yutaka (author)
Composites, Part A: Applied Science and Manufacturing ; 61 ; 163-171
2014
9 Seiten, 27 Quellen
Article (Journal)
English
Delamination detection in CFRP laminates with embedded small-diameter fiber Bragg grating sensors
| British Library Online Contents | 2002
Smart cure cycles for fiber metal laminates using embedded fiber Bragg grating sensors
| British Library Online Contents | 2019
Detection of transverse cracks in CFRP composites using embedded fiber Bragg grating sensors
| British Library Online Contents | 2000
| British Library Online Contents | 2002
| British Library Online Contents | 2003