A system and method for infrared (IR) thermography examination of a specimen under test are disclosed. One such method comprises one of imparting heat energy to the specimen under test with a heat energy source or removing heat energy from the specimen under test with a heat sink. Respectively, one of the heat energy source or the heat sink is removed. Using IR images, areas of surface heat transfer discontinuity of a surface temperature distribution of the specimen under test are identified to determine a distribution of a filler material in a base material of the specimen under test.
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