Application of Bragg grating sensors in the characterization of scaled marine vehicle models

被引:63
作者
Hjelme, DR [1 ]
Bjerkan, L [1 ]
Neegard, S [1 ]
Rambech, JS [1 ]
Aarsnes, JV [1 ]
机构
[1] SINTEF,ELECTRON & CYBERNET,N-7034 TRONDHEIM,NORWAY
来源
APPLIED OPTICS | 1997年 / 36卷 / 01期
关键词
fiber-optic sensors; Bragg gratings; strain sensors; marine vehicle models;
D O I
10.1364/AO.36.000328
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Experiments using two different fiber-optic Bragg grating strain sensor systems to measure dynamic loads, slamming forces, and bending moments on a scaled catamaran model are reported. The system designed to measure slamming forces is based on dynamic locking of the laser diode wavelength to the peak wavelength of a Bragg grating mounted in a force cell. The sensor system has a dynamic range of 27 dB (1-550 N) and a bandwidth in excess of 1 kHz. For the measurement of bending moments, a time-domain multiplexing system, which used a unique pulsed rf modulation technique, of two Bragg grating sensors mounted on a steel beam was designed. The dynamic range of this system was also 27 dB [17 Nm (Newton meter) with a 0.03-Nm resolution]. The bandwidth was limited to approximately 50 Hz. (C) 1997 Optical Society of America
引用
收藏
页码:328 / 336
页数:9
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