Non-contact laser based computation method of NDE of composites and other structures

Thangavel M. Thevar*, John M. Webster, Mikhail Kalshteyn, Jackie M. Mew

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


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 bonded structures such as lap joints; to date 5% metal loss has been detected. Defects in other metal structures such as tear straps in airframe fuselages of transport aircraft are rapidly detectable.

Original languageEnglish
Pages (from-to)219-225
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 3 Mar 1999
Event1999 Nondestructive Evaluation of Aging Materials and Composites III - Newport Beach, CA, USA
Duration: 3 Mar 19995 Mar 1999


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