Integration of infrared and optical imaging techniques for the nondestructive inspection of aeronautic parts

F. López; S. Sfarra; C. Ibarra-Castanedo; D. Paoletti; X. Maldague

doi:10.1117/12.2177259

12 May 2015 Integration of infrared and optical imaging techniques for the nondestructive inspection of aeronautic parts

F. López, S. Sfarra, C. Ibarra-Castanedo, D. Paoletti, X. Maldague

Author Affiliations +

Proceedings Volume 9485, Thermosense: Thermal Infrared Applications XXXVII; 948506 (2015) https://doi.org/10.1117/12.2177259
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

This work focuses in the implementation of infrared and optical imaging techniques for the inspection of aeronautics parts. To this aim, a helicopter blade with known defects is inspected with four different techniques: long pulse thermography, pulsed thermography, digital speckle photography (DSP) and holographic interferometry (HI). The first two techniques belongs to the group of infrared imaging techniques, which are based on the analysis of the infrared thermal patterns in order to detect internal anomalies in the material; whilst the last two (DSP and HI) corresponds to the optical imaging techniques which make use of visible light to measure the material response to an applied stress. Both techniques were applied using the active approach, i.e. an external stimulation is applied in order to produce a gradient in either, the thermal and/or displacement field of the material. The results are then compared in order to evaluate the advantages and limitations of each technique.

Citation Download Citation

F. López, S. Sfarra, C. Ibarra-Castanedo, D. Paoletti, and X. Maldague "Integration of infrared and optical imaging techniques for the nondestructive inspection of aeronautic parts", Proc. SPIE 9485, Thermosense: Thermal Infrared Applications XXXVII, 948506 (12 May 2015); https://doi.org/10.1117/12.2177259

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