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- W794230845 abstract "Infrared flash thermography (IRFT) is used to detect void-like flaws in a test object. The IRFT technique involves heating up the part surface using a flash of flash lamps. The post-flash evolution of the part surface temperature is sensed by an IR camera in terms of pixel intensity of image pixels. The IR technique involves recording of the IR video image data and analysis of the data using the normalized pixel intensity and temperature contrast analysis method for characterization of void-like flaws for depth and width. This work introduces a new definition of the normalized IR pixel intensity contrast and normalized surface temperature contrast. A procedure is provided to compute the pixel intensity contrast from the camera pixel intensity evolution data. The pixel intensity contrast and the corresponding surface temperature contrast differ but are related. This work provides a method to estimate the temperature evolution and the normalized temperature contrast from the measured pixel intensity evolution data and some additional measurements during data acquisition." @default.
- W794230845 created "2016-06-24" @default.
- W794230845 creator A5082090180 @default.
- W794230845 date "2013-02-01" @default.
- W794230845 modified "2023-09-27" @default.
- W794230845 title "Measuring and Estimating Normalized Contrast in Infrared Flash Thermography" @default.
- W794230845 hasPublicationYear "2013" @default.
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