Linear and nonlinear damage detection using a scanning laser vibrometer

Steve Vanlanduit; Patrick Guillaume; Johan Schoukens; Eli Parloo

doi:10.1117/12.386716

22 May 2000 Linear and nonlinear damage detection using a scanning laser vibrometer

Steve Vanlanduit, Patrick Guillaume, Johan Schoukens, Eli Parloo

Proceedings Volume 4072, Fourth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (2000) https://doi.org/10.1117/12.386716
Event: 4th International Conference on Vibration Measurement by Laser Techniques, 2000, Ancona, Italy

Abstract

Because a scanning laser vibrometer can perform vibration measurements with a high spatial resolution it is an ideal instrument to accurately locate damage in a structure. In literature different authors successfully used linear vibration measurements to detect faults with the aid of a scanning vibrometer. In this article we will study the feasibility of using nonlinear vibration features to detect and locate damage in a structure. The nonlinearities will be estimated using both classical and a newly developed technique. A comparison of linear and nonlinear damage detection features will be performed on measurements of a cracked plexiglass panel and a delaminated composite plate.

Citation Download Citation

Steve Vanlanduit, Patrick Guillaume, Johan Schoukens, and Eli Parloo "Linear and nonlinear damage detection using a scanning laser vibrometer", Proc. SPIE 4072, Fourth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2000); https://doi.org/10.1117/12.386716

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