Non-destructive evaluation of metal-to-metal adhesive joints using vibration analysis: experimental results

Pradeep Pandurangan; Gregory D. Buckner

doi:10.1117/12.660431

20 March 2006 Non-destructive evaluation of metal-to-metal adhesive joints using vibration analysis: experimental results

Pradeep Pandurangan, Gregory D. Buckner

Author Affiliations +

Proceedings Volume 6176, Nondestructive Evaluation and Health Monitoring of Aerospace Materials, Composites, and Civil Infrastructure V; 61760G (2006) https://doi.org/10.1117/12.660431
Event: Nondestructive Evaluation for Health Monitoring and Diagnostics, 2006, San Diego, CA, United States

Abstract

Vibration based non-destructive evaluation shows promise for damage detection in metal-to-metal adhesive joints. This research investigates an experimental technique to diagnose damage in single-lap adhesive joints subject to cyclical tensile loading. Vibration analysis reveals that damage can be correlated with changes in identified modal damping ratios. Constant amplitude forcing functions are employed to eliminate amplitude-dependent nonlinearities in the dynamic response profiles. Damping estimates obtained from time-domain analyses correlate well with damage magnitudes. Finite element modal analysis of the lap joints supports the experimental results.

Citation Download Citation

Pradeep Pandurangan and Gregory D. Buckner "Non-destructive evaluation of metal-to-metal adhesive joints using vibration analysis: experimental results", Proc. SPIE 6176, Nondestructive Evaluation and Health Monitoring of Aerospace Materials, Composites, and Civil Infrastructure V, 61760G (20 March 2006); https://doi.org/10.1117/12.660431

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