Analysis methods for full-field time-resolved infrared radiometry

Robert Osiander; Jane W. Maclachlan Spicer; John C. Murphy

doi:10.1117/12.235378

15 March 1996 Analysis methods for full-field time-resolved infrared radiometry

Robert Osiander, Jane W. Maclachlan Spicer, John C. Murphy

Proceedings Volume 2766, Thermosense XVIII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications; (1996) https://doi.org/10.1117/12.235378
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

A data analysis procedure is described to enable quantitative information about defect depth and surface and subsurface thermal properties to be obtained from the time series of images acquired in a time-resolved infrared radiometry (TRIR) measurement. While the approaches described have been previously considered for single point measurements, in this work the algorithms are applied to full field images. As a result, images presenting defect depth and amount of thermal mismatch at subsurface interfaces can be constructed. Results are presented for composite test panels with flat-bottomed holes milled to different depths, two-layer specimens with differing thermal properties between the top layer and the substrate and a graphite/epoxy-honeycomb composite panel with simulated delaminations.

Citation Download Citation

Robert Osiander, Jane W. Maclachlan Spicer, and John C. Murphy "Analysis methods for full-field time-resolved infrared radiometry", Proc. SPIE 2766, Thermosense XVIII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (15 March 1996); https://doi.org/10.1117/12.235378

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