Thermal waves visualized by holographic interferometry.
The propagation of long thermal waves induced in thin aluminum plates by a slowly modulated heat source was investigated by stroboscopic holographic interferometry. The effect of different modulation frequencies on the visualization of such waves is shown. Experimental results confirm analytical thermoelastic predictions. The application of long thermal waves to holographic nondestructive testing is demonstrated.
Kaufmann
G H
GH
Vest
C M
CM