NDT of satellite structures during their assembly by infrared stimulated thermography
- Dassault Aviation, Saint-Cloud (France)
- MATRA Defense, Velizy-Villacoublay (France)
- Aerospatiale, Cannes (France)
- CNES, Toulouse (France)
The feasibility of Non Destructive Testing (NDT) by infrared stimulated thermography of satellite structures during their assembly has been evaluated. After a comprehensive bibliography has been collected and analyzed, a comparison between calculated theoretical signals and experimental thermograms obtained on composite samples has been achieved, leading to good results and confirming the limits of the method. Then, a mock-up representative of the satellite structure complexity has been designed and manufactured. An original heating system has been developed, while a fast acquisition system has been adapted to several conventional infrared cameras. The feasibility was demonstrated through a large number of trials during which several parameters such as heater and camera locations, level of illumination, camera wavelength range, etc., were systematically changed. By using conventional image processing, and more specific data processing techniques, the identification of all environmental conditions interfering with this NDT method is underway; it will lead to effective instructions for the NDT of satellite structures by infrared stimulated thermography.
- OSTI ID:
- 220708
- Report Number(s):
- CONF-940449-; ISBN 0-8194-1549-9; TRN: IM9620%%102
- Resource Relation:
- Conference: Society of Photo-Optical Instrumentation Engineers conference on intelligent information systems, Orlando, FL (United States), 4-8 Apr 1994; Other Information: PBD: 1994; Related Information: Is Part Of Thermosense 16: An international conference on thermal sensing and imaging diagnostic applications; Snell, J.R. Jr. [ed.]; PB: 330 p.; Proceedings/SPIE, Volume 2245
- Country of Publication:
- United States
- Language:
- English
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