TY - JOUR
T1 - Metaheuristic inverse analysis on interfacial mechanics of distributed fiber optic sensors undergoing interfacial debonding
AU - Tan, Xiao
AU - Mahjoubi, Soroush
AU - Zou, Xingxing
AU - Meng, Weina
AU - Bao, Yi
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/10/1
Y1 - 2023/10/1
N2 - Distributed fiber optic sensors with protective packages have shown unique capabilities in measuring strain and crack distributions for structural health monitoring. However, the mechanics at the fiber-package interface remain unclear when debonding occurs. This paper investigates the interfacial mechanics for distributed fiber optic sensors undergoing debonding through mechanical analysis and metaheuristic-based inverse analysis. First, the governing equation of the interfacial mechanics is established and solved with assistance from metaheuristic-based inverse analysis on the interfacial properties of fiber optic cables. Then, experiments were conducted to validate the analysis results by measuring the strain distributions in distributed fiber optic sensors based on optical frequency domain reflectometry. The results showed that the proposed approach accurately quantified the interfacial mechanics, interfacial properties, strain transfer, and debonding behavior in distributed fiber optic sensors. This research advances the fundamental understandings of the sensing mechanisms of distributed fiber optic sensors undergoing inelastic behaviors for structural health monitoring.
AB - Distributed fiber optic sensors with protective packages have shown unique capabilities in measuring strain and crack distributions for structural health monitoring. However, the mechanics at the fiber-package interface remain unclear when debonding occurs. This paper investigates the interfacial mechanics for distributed fiber optic sensors undergoing debonding through mechanical analysis and metaheuristic-based inverse analysis. First, the governing equation of the interfacial mechanics is established and solved with assistance from metaheuristic-based inverse analysis on the interfacial properties of fiber optic cables. Then, experiments were conducted to validate the analysis results by measuring the strain distributions in distributed fiber optic sensors based on optical frequency domain reflectometry. The results showed that the proposed approach accurately quantified the interfacial mechanics, interfacial properties, strain transfer, and debonding behavior in distributed fiber optic sensors. This research advances the fundamental understandings of the sensing mechanisms of distributed fiber optic sensors undergoing inelastic behaviors for structural health monitoring.
KW - Crack assessment
KW - Distributed fiber optic sensors
KW - Interface mechanics
KW - Metaheuristic inverse analysis
KW - Optical frequency domain reflectometry (OFDR)
KW - Structural health monitoring
UR - http://www.scopus.com/inward/record.url?scp=85162079006&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85162079006&partnerID=8YFLogxK
U2 - 10.1016/j.ymssp.2023.110532
DO - 10.1016/j.ymssp.2023.110532
M3 - Article
AN - SCOPUS:85162079006
SN - 0888-3270
VL - 200
JO - Mechanical Systems and Signal Processing
JF - Mechanical Systems and Signal Processing
M1 - 110532
ER -