@inproceedings{7ded793716ea42e685e98cb23b8370d1,
title = "Fiber Bragg grating sensing system for detection of laser-induced ultrasonics in application to railway",
abstract = "This paper presents a new approach for detecting ultrasonic generated by a laser in the confined ablation regime, utilizing an adaptive fiber Bragg gratin (FBG) sensing system. A nanosecond pulsed laser is used for generating ultrasonic wave in aluminum specimen with water-confined layer. Experimental measurements demonstrate that the amplitudes of Rayleigh wave in the confined ablation regime are unexpectedly 8 times larger than the ones in direct ablation regime when the incident laser intensity is about 0.12×109 W/cm2. It is shown that confinement of the surface with a waterconfined layer provides an effective method of enhancing amplitude of laser-induced ultrasonic waves in the target material about an order of magnitude. These results indicate that the possibility of applying the laser-based FBG ultrasonic sensing system in nondestructive testing (NDT) and structure health monitoring (SHM) within special structural materials of high-speed train.",
author = "Yang Zhao and Yinian Zhu and Junfang Wang and Songye Zhu and Jian Ma",
year = "2017",
doi = "10.12783/shm2017/14187",
language = "英语",
series = "Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance - Proceedings of the 11th International Workshop on Structural Health Monitoring, IWSHM 2017",
publisher = "DEStech Publications",
pages = "2830--2839",
editor = "Fu-Kuo Chang and Fotis Kopsaftopoulos",
booktitle = "Structural Health Monitoring 2017",
note = "11th International Workshop on Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance, IWSHM 2017 ; Conference date: 12-09-2017 Through 14-09-2017",
}