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Proceedings Paper

Non-destructive evaluation of metal-to-metal adhesive joints using vibration analysis: experimental results
Author(s): Pradeep Pandurangan; Gregory D. Buckner
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Paper 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.

Paper Details

Date Published: 20 March 2006
PDF: 9 pages
Proc. SPIE 6176, Nondestructive Evaluation and Health Monitoring of Aerospace Materials, Composites, and Civil Infrastructure V, 61760G (20 March 2006); doi: 10.1117/12.660431
Show Author Affiliations
Pradeep Pandurangan, North Carolina State Univ. (United States)
Gregory D. Buckner, North Carolina State Univ. (United States)


Published in SPIE Proceedings Vol. 6176:
Nondestructive Evaluation and Health Monitoring of Aerospace Materials, Composites, and Civil Infrastructure V
Aftab A. Mufti; Andrew L. Gyekenyesi; Peter J. Shull, Editor(s)

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