Sonic IR imaging of cracks and delaminations

Authors
Favro, LD Han, XY Zhong, OY Sun, G Thomas, RL
Citation
Ld. Favro et al., Sonic IR imaging of cracks and delaminations, ANAL SCI, 17, 2001, pp. S451-S453
Citations number
2
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
ANALYTICAL SCIENCES
ISSN journal
09106340 → ACNP
Volume
17
Year of publication
2001
Pages
S451 - S453
Database
ISI
SICI code
0910-6340(2001)17:<S451:SIIOCA>2.0.ZU;2-2
Abstract
A method for crack detection is described in which a single short pulse (si milar to 50ms) of 20 kHz sound is introduced into a material, and cracks wi thin the material are revealed through their heat generation, as the result ing surface temperature distribution is observed using an infrared camera. The "movies" of this evolving surface temperature pattern over the vicinity of the subsurface defect show an astonishingly large effect.