Title :
Evaluation of defect root radius by ultrasound
Author :
Sinclair, Anthony N. ; Wang, Huifang ; Mair, Douglas
Author_Institution :
Dept. of Mech. Eng., Toronto Univ., Ont.
fDate :
31 Oct-3 Nov 1993
Abstract :
A method for estimating the root radius of curvature at the root of a surface breaking defect is investigated. The technique is based on the dependence of an ultrasonic diffraction pattern on the radius to wavelength ratio. The concept is applied to the case of a fretting wear mark found in pressure tubes of CANDU nuclear reactors; results are analyzed using a wavelet transform to display the key frequency data
Keywords :
fission reactor safety; ultrasonic diffraction; ultrasonic materials testing; CANDU reactor; defect root; frequency; fretting wear mark; pressure tubes; radius of curvature; surface breaking defect; ultrasonic diffraction; wavelet transform; Acoustic diffraction; Acoustic scattering; Displays; Frequency estimation; Fuels; Mechanical engineering; Surface cracks; Ultrasonic imaging; Wavelet analysis; Wavelet transforms;
Conference_Titel :
Ultrasonics Symposium, 1993. Proceedings., IEEE 1993
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1993.339514
