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Rayleigh Waves for Continuous Monitoring of a Propagating Crack Front
O. Buck
CL. Ho
HL. Marcus
RB. Thompson
出版
ASTM International
, 1972
URL
http://books.google.com.hk/books?id=1tx7zgEACAAJ&hl=&source=gbs_api
註釋
A simple ultrasonic system which uses Rayleigh (surface) waves is briefly described. Applied to a part-through crack (PTC) specimen the wave is attenuated according to the crack depth. Functional relations of the crack depth and hence the stress intensity factor versus the number of load cycles N or the crack growth rate da/dN versus the cyclic stress intensity range ?K are therfore easily obtained by continuously monitoring such a surface wave.
