Acoustic Emission Burst-type Signal Detection Using Mach-Zehnder Interferometer Based Optic Fiber Sensor
Optical fiber sensors are rapidly emerging as viable alternatives to piezoelectric devices as effective substitution of detecting acoustic emission (AE) owing to potential advantages over conventional tuned piezoelectric transducers.The authors have investigated Mach-Zehnder interferometer based AE sensors for acoustic emission detecting,with the hope of replacing the existing conventional piezoelectric transducer in storage tank floor evaluation.Sensitivity and performance of Mach-Zehnder AE sensor have been evaluated compared with existing transducer.Further,Hsu-Nielsen pencil lead break test was conducted to explore details of Mach-Zehnder AE sensors in acoustic emission burst signal monitoring.The results indicate that optical fiber AE sensors based on Mach-Zehnder interferometer can be used as transducers sensitive to acoustic events and the indication of imminent failure of a structure.Optical fiber sensors are useful in many applications where conventional piezoelectric transducers are not well suited.In addition,some suggestions are put forward for forthcoming actual application on the spot.
optical fiber sensors Mach-Zehnder interferometer storage tanks acoustic emission
Tao Zhang Hao Feng Yang An Shi-Jiu Jin Zhou-Mo Zeng
Sate Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin, China
国际会议
天津
英文
158-161
2012-10-16（万方平台首次上网日期，不代表论文的发表时间）