Open AccessDIRECTIVITY PATTERNS OF ANGLE PROBES FOR ULTRASONIC BULK WAVES AND SURFACE WAVES
Author(s) -
Yan Ren-bo
Publication year - 1974
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.23.41
Subject(s) - ultrasonic sensor , longitudinal wave , directivity , isotropy , acoustics , surface wave , transverse wave , optics , mechanical wave , transverse plane , surface (topology) , physics , rayleigh wave , ultrasonic testing , nondestructive testing , computation , materials science , wave propagation , geometry , telecommunications , computer science , structural engineering , mathematics , antenna (radio) , engineering , algorithm , quantum mechanics
The directivity patterns of angle probes commonly used in ultrasonic material-testing are studied both theoretically and experimentally. Expressions are obtained for longitudinal waves and transverse waves radiating into the body under test and for surface waves propagating over the surface of the body, treated as a semi-infinite isotropic medium. Numerical computations are given in all three cases for a steel object. The theoretical deductions are partially checked by experiments for the case of longitudinal and surface waves. Some problems to be considered in ultrasonic testing are pointed out.