Noncontact laser-based computation method of NDE of composites and other structures

Thangavel M. Thevar; John M. Webster; Mikhail Kalshteyn; Jacqueline M. Mew

doi:10.1117/12.339851

8 February 1999 Noncontact laser-based computation method of NDE of composites and other structures

Thangavel M. Thevar, John M. Webster, Mikhail Kalshteyn, Jacqueline M. Mew

Proceedings Volume 3585, Nondestructive Evaluation of Aging Materials and Composites III; (1999) https://doi.org/10.1117/12.339851
Event: Nondestructive Evaluation Techniques for Aging Infrastructures and Manufacturing, 1999, Newport Beach, CA, United States

Abstract

A new laser based remote NDE method named RAID is described and some selected results are presented in this paper. This system has demonstrated its ability to detect defects in solid laminates; honeycomb/carbon, where defects at the rear have been observed; bonding defects in ceramic and also defects such as cracking in the new carbon foam materials, both of these latter materials have extremely high acoustic attenuation. Additionally the system has recently demonstrated its feasibility to detect and quantify subsurface corrosion in aluminum riveted and boded structures such as lap joints; to date 5 percent metal loss has been detected. Defects in other metal structures such as tear straps in airframe fuselages of transport aircraft are rapidly detectable.

Citation Download Citation

Thangavel M. Thevar, John M. Webster, Mikhail Kalshteyn, and Jacqueline M. Mew "Noncontact laser-based computation method of NDE of composites and other structures", Proc. SPIE 3585, Nondestructive Evaluation of Aging Materials and Composites III, (8 February 1999); https://doi.org/10.1117/12.339851

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