A hybrid PZT-FBG sensing-based damage detection

Tomasz Wandowski; Pawel Malinowski; Sultan Ahamad; Rohan Soman

doi:10.1117/12.3011986

9 May 2024 A hybrid PZT-FBG sensing-based damage detection

Tomasz Wandowski, Pawel Malinowski, Sultan Ahamad, Rohan Soman

Proceedings Volume 12951, Health Monitoring of Structural and Biological Systems XVIII; 129510H (2024) https://doi.org/10.1117/12.3011986
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States

Abstract

In this paper authors investigated elastic guided wave-based damage localization in thin panel made out of isotropic material. Elastic waves excitation is based on piezoelectric transducer. Wave sensing is based on Fiber Bragg Gratings (FBG) strain sensors and piezoelectric sensors. Piezoelectric transducers are very popular in applications related to elastic wave generation and sensing. The FBG strain sensors utilized in the past for quasi static or quasi-static strain sensing are more and more utilized in field of elastic wave sensing. In the case of FBG sensors the edge filtering method is utilized. In this purpose tunable laser source is used. Received optical signal is converted to the voltage signal based on photodetector. Attention in this research was focused on dual sensing using FBGs. For this purpose, pair of FBG sensors located on the top and bottom surface is utilized. Damage localization is based on delay-and-sum algorithm. In this paper experimental results are presented.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tomasz Wandowski, Pawel Malinowski, Sultan Ahamad, and Rohan Soman "A hybrid PZT-FBG sensing-based damage detection", Proc. SPIE 12951, Health Monitoring of Structural and Biological Systems XVIII, 129510H (9 May 2024); https://doi.org/10.1117/12.3011986

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