光学学报, 2003, 23 (s1): 785, 网络出版: 2013-01-28
Fiber Sensing of Micro-Crack
Fiber Sensing of Micro-Crack
摘要
Abstract
Optical fiber sensors are used for sensing micro-cracking in composite and metal materials in aerospace applications. The sensing mechanism is based on the detection of acoustic emission signals, which are known to emanate from micro-cracks when they grow under further loading. The sensor head consists of a fiber Bragg grating that is capable of detecting acoustic emission signals generated by pencil lead breaking, of frequencies up to 200 kHz.
Hong-Liang Cui. Fiber Sensing of Micro-Crack[J]. 光学学报, 2003, 23(s1): 785. Hong-Liang Cui. Fiber Sensing of Micro-Crack[J]. Acta Optica Sinica, 2003, 23(s1): 785.