National Institute of Advanced Industrial Science & Technology, Tsukuba 305-8568, Japan.
Opt Lett. 2009 Oct 1;34(19):2942-4. doi: 10.1364/OL.34.002942.
Acoustic emission (AE) during a pressure test of a carbon fiber-reinforced plastic tank was measured using a fiber Bragg grating (FBG) sensor and, for comparison, using a conventional piezoelectric sensor. The FBG-inscribed optical fiber was used not only as an optical transmission line but also as an ultrasonic transmission line. The FBG sensor showed resonant characteristics and could detect AE continuously during the test. AE detected with the FBG sensor exhibited a cumulative behavior similar to that detected with the piezoelectric sensor. The FBG sensor was demonstrated to have comparable AE detection capability to piezoelectric sensors.
在碳纤维增强塑料罐的压力测试过程中，使用光纤布拉格光栅（FBG）传感器测量声发射（AE），并与传统的压电传感器进行比较。光纤布拉格光栅刻写光纤不仅用作光学传输线，而且还用作超声传输线。FBG 传感器具有谐振特性，并且可以在测试过程中连续检测 AE。使用 FBG 传感器检测到的 AE 表现出与使用压电传感器检测到的 AE 相似的累积行为。FBG 传感器被证明具有与压电传感器相当的 AE 检测能力。
