Ultrasonic wave based structural health monitoring (SHM) is an innovative method for nondestructive detection and an
area of growing interest. This is due to high demands for wireless detection in the field of structural engineering. Through
optically exciting and detecting ultrasonic waves, electrical wire connections can be avoided, and non-contact SHM can
be achieved. With the combination of piezoelectric transducer (PZT) (which possesses high heat resistance) and the noncontact
detection, this system has a broad range of applications, even in extreme conditions. This paper reports an all-optically
driven SHM system. The resonant frequencies of the PZT transducers are sensitive to a variety of structural
damages. Experimental results have verified the feasibility of the all-optically driven SHM system.
Siwen Bi, Nan Wu, Jingcheng Zhou, Haifeng Zhang, Chen Zhang, and Xingwei Wang, "All-optically driven system in ultrasonic wave-based structural health monitoring," Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98030K (Presented at SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring: March 21, 2016; Published: 20 April 2016); https://doi.org/10.1117/12.2222080.
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