Statistical evaluation of thermographic NDT performance applied to CFRP

Vladimir P. Vavilov; Paolo Giulio Bison; Ermanno G. Grinzato

doi:10.1117/12.235396

15 March 1996 Statistical evaluation of thermographic NDT performance applied to CFRP

Vladimir P. Vavilov, Paolo Giulio Bison, Ermanno G. Grinzato

Proceedings Volume 2766, Thermosense XVIII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications; (1996) https://doi.org/10.1117/12.235396
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

This paper contains inspection results for a carbon epoxy plastic reference specimen with Teflon^TM inserts. A long-pulse heating technique and AGEMA-900 IR imager have been used. Results are presented as a set of twenty-two images including a source image, normalized image, timegram, depthgram, tomogram presented as B&W and color hard-copies, as well as live images on a color monitor. This set of data has been exhibited to operators (experts or not) together with the set of rules for detecting defects. Obtained data are processed statistically and compared with true defect locations. The Tanimoto criterion is used for data comparison. Recommendations on the best image processing technique, as well as on the best form of data presentation, are given.

Citation Download Citation

Vladimir P. Vavilov, Paolo Giulio Bison, and Ermanno G. Grinzato "Statistical evaluation of thermographic NDT performance applied to CFRP", Proc. SPIE 2766, Thermosense XVIII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (15 March 1996); https://doi.org/10.1117/12.235396

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