Fatigue crack detection using nonlinear vibro-acoustic cross-modulations based on the Luxemburg-Gorky effect

T. Trojniar; A. Klepka; L. Pieczonka; W. J. Staszewski

doi:10.1117/12.2046471

9 March 2014 Fatigue crack detection using nonlinear vibro-acoustic cross-modulations based on the Luxemburg-Gorky effect

T. Trojniar, A. Klepka, L. Pieczonka, W. J. Staszewski

Author Affiliations +

Proceedings Volume 9064, Health Monitoring of Structural and Biological Systems 2014; 90641F (2014) https://doi.org/10.1117/12.2046471
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

This paper investigates the nonlinear cross-modulation vibro-acoustic technique for fatigue crack detection in metallic structures. The method is used in an aluminium plate instrumented with low-profile piezoceramic transducers that are used for excitation. Laser vibrometry is used to acquire vibro-acoustic responses. The results demonstrate the modulation transfer from one excitation signal to the other excitation signal in the presence of crack in the plate. The work presented focuses on the analysis of modulation intensities. The paper demonstrates that the method can be used for fatigue crack detection in metallic structures.

Citation Download Citation

T. Trojniar, A. Klepka, L. Pieczonka, and W. J. Staszewski "Fatigue crack detection using nonlinear vibro-acoustic cross-modulations based on the Luxemburg-Gorky effect", Proc. SPIE 9064, Health Monitoring of Structural and Biological Systems 2014, 90641F (9 March 2014); https://doi.org/10.1117/12.2046471

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