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Development of Fiber-Optic AE Sensor for On-Line Monitoring System
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 Title & Authors
Development of Fiber-Optic AE Sensor for On-Line Monitoring System
Nam, Jae-Yeong; Jeong, Jae-Hyeon; Choe, Jae-Bung; Kim, Yeong-Jin;
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The objective of this paper is to develop a fiber-optic acoustic emission(AE) sensor applicable to on-line monitoring systems which is suitable for long-distance signal transmission. An AE sensor was developed by use of a fiber-optic cantilever and an extrinsic Fabry-Perot interferometer(EEPI). The efficiency of signal processing was improved by driving the high frequency AE signals into the low frequency ones. In order to verify the developed sensor, the tensile and the pencil lead fracture(PLF) tests were performed including the experiment showing the Kaiser effect. Form tests, AE signals were successfully detected in the elastic-plastic deformation range, especially higher signals at the crack propagation. The developed sensor was expected to be used for an on-line monitoring of crack propagation in mechanical system.
On-Line Monitoring System;Acoustic Emission;Optical Fiber;Fabry-Perot Interferonmeter;RMS Voltage;
 Cited by
광섬유를 이용한 상시감시 시스템용 음향방출센서의 개발,남재영;정재현;최재붕;김영진;

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