Residual stresses in aircraft components: II. Nondestructive characterization using leaky Lamb waves

John C. Stranart; Shaker A. Meguid

doi:10.1117/12.339894

28 January 1999 Residual stresses in aircraft components: II. Nondestructive characterization using leaky Lamb waves

John C. Stranart, Shaker A. Meguid

Proceedings Volume 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III; (1999) https://doi.org/10.1117/12.339894
Event: Nondestructive Evaluation Techniques for Aging Infrastructures and Manufacturing, 1999, Newport Beach, CA, United States

Abstract

Cold working processes are well established for improving the fatigue life of critical load bearing components. The resulting unloading residual stresses are beneficial but there is now a need to nondestructively quantify and verify their levels in engineering components. It is therefore the purpose of this investigation to evaluate the capability of the leaky Lamb wave technique to characterize residual stresses. The component is ted as a transversely isotropic layered solid with wave velocities varying in each layer. Modeling indicates that the technique can characterize depth varying residual stresses. Experimental work indicates that the technique has potential as a quality assurance tool.

Citation Download Citation

John C. Stranart and Shaker A. Meguid "Residual stresses in aircraft components: II. Nondestructive characterization using leaky Lamb waves", Proc. SPIE 3586, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware III, (28 January 1999); https://doi.org/10.1117/12.339894

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