DocumentCode
2755136
Title
Detection of crack closure in time-resolved acoustic microscopy
Author
Knauss, D. ; Zhai, T. ; Briggs, G.A.D. ; Martin, J.W.
Volume
3
fYear
1994
fDate
Oct. 31 1994-Nov. 3 1994
Firstpage
1421
Abstract
Acoustic microscopy with time-of-flight measurements of short pulses has been used to detect the closure of short cracks. Operating the microscope in the pulse mode, the reflections from inclined cracks have been measured and a diffraction model for calculating the amplitude of these reflections as a function of the lens position was developed. The detected signal amplitudes depend on the size of the crack and on the contact between the crack faces
Keywords
acoustic microscopy; acoustic pulses; acoustic signal detection; crack detection; ultrasonic diffraction; ultrasonic materials testing; ultrasonic reflection; 230 MHz; amplitude; crack closure detection; crack face contact; crack size; detected signal amplitudes; diffraction model; fatigue cracks; lens position; pulse mode; reflections; short pulses; time-of-flight measurements; time-resolved acoustic microscopy; Acoustic diffraction; Acoustic microscopy; Acoustic pulses; Acoustic reflection; Acoustic signal detection; Acoustic testing; Crack detection; Nondestructive testing;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 1994. Proceedings., 1994 IEEE
Conference_Location
Cannes, France
Print_ISBN
0-7803-2012-3
Type
conf
DOI
10.1109/ULTSYM.1994.401858
Filename
401858
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