8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-563-C7-566
Microwave induced time-resolved infrared radiometry for subsurface defect detection and characterizationR. Osiander, J.W.M. Spicer and J.C. Murphy
The Johns Hopkins University, Applied Physics Laboratory, Laurel, MD, 20723-6099, U.S.A.
The use of microwaves as a heating source in time-resolved infrared radiometry provides the ability to heat surface and subsurface microwave-absorbing regions of a specimen directly. This can improve the contrast and spatial resolution of such regions and enhance their detectability when compared with conventional laser or flash lamp sources. Applications such as subsurface water detection or the detection of carbon fiber contaminates in epoxy composites are investigated experimentally and analytically.
© EDP Sciences 1994