Flash duration effect in one-sided thermal imaging.
Theoretical formulation is developed for one-sided thermal imaging that utilizes an infrared camera for temperature measurement and photographic flash lamps for radiant heating of the sample surface. This formulation accounts for the radiant intensity variation of flash lamps, which typically exhibit a short rise time but a long exponential-decay time (several milliseconds). During the flash, the infrared camera receives radiation from the emission of the sample surface as well as the reflection of the flash energy. Experimental results clearly show the flash-reflection effect and the temperature response of the sample surface under finite flash durations. Theoretical and experimental data are compared and discussed.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- EE
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 942092
- Report Number(s):
- ANL/ET/CP-113334; TRN: US200825%%655
- Resource Relation:
- Conference: 31st Annual Conference Quantitative Nondestructive Evaluation; Jul. 25, 2004 - Jul. 30, 2004; Golden, CO
- Country of Publication:
- United States
- Language:
- ENGLISH
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