Guided waves based damage detection based on quadrant area using optical fiber sensors

Kaleeswaran Balasubramaniam; Rohan Soman; Pawel Malinowski

doi:10.1117/12.2612863

19 April 2022 Guided waves based damage detection based on quadrant area using optical fiber sensors

Kaleeswaran Balasubramaniam, Rohan Soman, Pawel Malinowski

Proceedings Volume 12048, Health Monitoring of Structural and Biological Systems XVI; 1204806 (2022) https://doi.org/10.1117/12.2612863
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

Fiber optical Bragg Grating (FBG) sensors are of small size, maybe embedded into structures, and hence are widely used in structural health monitoring (SHM) in various fields. Due to their passive nature, the FBGs have to be used with piezo actuators in a hybrid SHM system. The directional sensitivity makes the signal processing a challenge, also, due to the directionality the damage mapping techniques developed for the omnidirectional PZT sensors cannot be directly applied to FBG sensors. Hence, this paper shows a damage mapping technique that overcomes the directional sensitivity of the FBG sensors. The methodology makes use of quadrant cosine area to obtain damage propagation paths. The damage localization approach works to identify the damage locations by taking advantage of the symmetry of the proposed circular network of PZT actuator-FBG arrangements. It aims at reducing the calculation time by introducing quadrant sector-based calculations of the damage indices.

Conference Presentation

Citation Download Citation

Kaleeswaran Balasubramaniam, Rohan Soman, and Pawel Malinowski "Guided waves based damage detection based on quadrant area using optical fiber sensors", Proc. SPIE 12048, Health Monitoring of Structural and Biological Systems XVI, 1204806 (19 April 2022); https://doi.org/10.1117/12.2612863

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available