Damage detection system with sub-microsecond resolution

Eric Udd; Jerry Benterou

doi:10.1117/12.778484

7 April 2008 Damage detection system with sub-microsecond resolution

Eric Udd, Jerry Benterou

Proceedings Volume 6933, Smart Sensor Phenomena, Technology, Networks, and Systems 2008; 69330B (2008) https://doi.org/10.1117/12.778484
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

Fiber optic grating sensors have been used to measure multi-dimensional strain, pressure, temperature, corrosion and moisture. This paper presents a method of using fiber grating sensors to measure the position and velocity of a very fast event associated with a blast wave. A chirped fiber grating of 50 mm length is placed in a highly energetic material. The action of the shock wave is to destroy the fiber grating as it propagates along it. By using a spectral filter such as a chirped fiber grating in combination with high speed detectors the position and velocity of the shock wave may be determined. A layout of a system used to experimentally verify this technique is described and results presented for two different highly energetic materials.

Citation Download Citation

Eric Udd and Jerry Benterou "Damage detection system with sub-microsecond resolution", Proc. SPIE 6933, Smart Sensor Phenomena, Technology, Networks, and Systems 2008, 69330B (7 April 2008); https://doi.org/10.1117/12.778484

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