Optimization of thermographic NDT using finite element analysis

Ken E. Lulay; Morteza Safai

doi:10.1117/12.171159

21 March 1994 Optimization of thermographic NDT using finite element analysis

Ken E. Lulay, Morteza Safai

Proceedings Volume 2245, Thermosense XVI: An International Conference on Thermal Sensing and Imaging Diagnostic Applications; (1994) https://doi.org/10.1117/12.171159
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

Experimental and analytical methods were used to study heating techniques for IR thermography inspection of superplastic formed/diffusion bonded (SPF/DB) structural components. Various thermal loads were investigated to determine the parameters required for highest flaw detection sensitivity. Finite element analysis was used to determine optical heating techniques. According to the analysis, short burst, high intensity heating on the inspection side of the part is required for the highest flaw detection sensitivity. The analytical results were verified using an IR camera and heat lamps to detect unbonds in four-sheet SPF/DB panels. Good quantitative agreement between the analysis and laboratory experiments was obtained.

Citation Download Citation

Ken E. Lulay and Morteza Safai "Optimization of thermographic NDT using finite element analysis", Proc. SPIE 2245, Thermosense XVI: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (21 March 1994); https://doi.org/10.1117/12.171159

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