Thermal wave depth profile of subsurface defect in opaque solids using mirage effect (PDS) {[}revisited]

Faculty Science Year: 1999
Type of Publication: InProcceding Pages:
Authors:
NEGM, S, TALAAT, H, Abdalla, S, Hassan, AF
Journal: AMER INST PHYSICS Volume:
Research Area: Engineering; Food Science \& Technology; Instruments \& Instrumentation; Materials Science; Microscopy; Science \& Technology - Other Topics; Optics; Physics; Spectroscopy ISSN ISI:000079746800050
Keywords : Thermal wave depth profile , subsurface defect    
Abstract:
Noncontact and nondestructive photothermal deflection method (PDS) has been used for the detection of subsurface defects of different shapes, different thermal conductivities, different sizes and at different depths from the sample surface. The results are consistent with the assumption that the heat flow is impeded at each edge of the defect.
    
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