Surface-bonded fiber optic Sagnac sensors for ultrasound detection

被引：15
作者：
Jang, TS
Lee, SS [1 ]
Kim, YG
机构：
[1] Korea Res Inst Stand & Sci, Div Ind Metrol, Nondestruct Measurement Grp, Taejon 305340, South Korea
[2] Korea Adv Inst Sci & Technol, Satellite Technol Res Ctr, Taejon 305701, South Korea
来源：
ULTRASONICS | 2004年 / 42卷 / 1-9期
关键词：
fiber optic sensors; Sagnac interferometer; ultrasonic waves; lamb waves;
D O I：
10.1016/j.ultras.2004.01.061
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper describes a fiber optic sensor suitable for remote sensing and multi-point detection of ultrasound. This ultrasound sensor is based on the surface-bonded fiber optic Sagnac interferometer with the output fringe visibility of I; it consists of a laser source, an ordinary single mode fiber delay line, a fiber coupler, a phase modulator and polarization controllers. For the validation of the sensor, surface acoustic waves and Lamb waves are excited by illuminating a steel specimen with an array of Q-switched Nd:YAG laser-generated line sources and the measurement of laser-generated ultrasonic waves are performed on the specimen surface using the surface-mounting fiber optic Sagnac sensor. The surface-bonded fiber optic sensor developed in this study has a simple configuration for detection of ultrasonic waves. Effectiveness of surface-bonded fiber optic Sagnac sensors for remote sensing of ultrasound and in situ monitoring Of Structures is investigated. The capability Of multi-point detection of ultrasound by this Sagnac sensor is also discussed. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：837 / 841
页数：5
相关论文
共 7 条
[1]   EMBEDDED FIBEROPTIC FABRY-PEROT ULTRASOUND SENSOR [J].
ALCOZ, JJ ;
LEE, CE ;
TAYLOR, HF .
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1990, 37 (04) :302-306
[2]  
Fomitchov P, 1997, REV PROG Q, V16, P2053
[3]   Compact phase shifted Sagnac interferometer for ultrasound detection [J].
Fomitchov, PA ;
Krishnaswamy, S ;
Achenbach, JD .
OPTICS AND LASER TECHNOLOGY, 1997, 29 (06) :333-338
[4]   Generation and reception of ultrasonic guided waves in composite plates using conformable piezoelectric transmitters and optical-fiber detectors [J].
Gachagan, A ;
Hayward, G ;
McNab, A ;
Reynolds, P ;
Pierce, SG ;
Philp, WR ;
Culshaw, B .
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1999, 46 (01) :72-81
[5]   Non-contact detection of laser-generated surface acoustic waves using fiber optic Sagnac interferometer [J].
Jang, TS ;
Lee, JJ ;
Yoon, DJ ;
Lee, SS .
ULTRASONICS, 2002, 40 (1-8) :803-807
[6]   Noncontact detection of ultrasonic waves using fiber optic Sagnac interferometer [J].
Jang, Tae Seong ;
Lee, Seung Seok ;
Kwon, Il Bum ;
Lee, Wang Joo ;
Lee, Jung Ju .
2002, Institute of Electrical and Electronics Engineers Inc. (49)
[7]   Broadband Lamb wave measurements in aluminium and carbon/glass fibre reinforced composite materials using non-contacting laser generation and detection [J].
Pierce, SG ;
Culshaw, B ;
Philp, WR ;
Lecuyer, F ;
Farlow, R .
ULTRASONICS, 1997, 35 (02) :105-114
1