Guided Wave and Damage Detection in Composite Laminates Using Different Fiber Optic Sensors

被引：55
|
作者：
Li, Fucai [1 ]
Murayama, Hideaki [1 ]
Kageyama, Kazuro [1 ]
Shirai, Takehiro [1 ]
机构：
[1] Univ Tokyo, Sch Engn, Dept Syst Innovat, Bunkyo Ku, Tokyo 1138656, Japan
来源：
SENSORS | 2009年 / 9卷 / 05期
基金：
中国国家自然科学基金; 日本学术振兴会;
关键词：
fiber Bragg grating; Doppler effect-based fiber optic sensor; guided wave; composite laminate; damage detection; WAFER ACTIVE SENSORS; LAMB WAVES; FATIGUE-CRACK; ULTRASOUND; PROPAGATION; IDENTIFICATION; DELAMINATION; ARRAYS; BEAMS;
D O I：
10.3390/s90504005
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Guided wave detection using different fiber optic sensors and their applications in damage detection for composite laminates were systematically investigated and compared in this paper. Two types of fiber optic sensors, namely fiber Bragg gratings (FBG) and Doppler effect-based fiber optic (FOD) sensors, were addressed and guided wave detection systems were constructed for both types. Guided waves generated by a piezoelectric transducer were propagated through a quasi-isotropic carbon fiber reinforced plastic (CFRP) laminate and acquired by these fiber optic sensors. Characteristics of these fiber optic sensors in ultrasonic guided wave detection were systematically compared. Results demonstrated that both the FBG and FOD sensors can be applied in guided wave and damage detection for the CFRP laminates. The signal-to-noise ratio (SNR) of guided wave signal captured by an FOD sensor is relatively high in comparison with that of the FBG sensor because of their different physical principles in ultrasonic detection. Further, the FOD sensor is sensitive to the damage-induced fundamental shear horizontal (SH0) guided wave that, however, cannot be detected by using the FBG sensor, because the FOD sensor is omnidirectional in ultrasound detection and, in contrast, the FBG sensor is severely direction dependent.
引用
收藏
页码：4005 / 4021
页数：17
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