Acoustic emission during slow crack growth : 2nd paper
Technology reports of the Yamaguchi University Volume 2 Issue 5
Page 513-520
published_at 1981-12
Title
Acoustic emission during slow crack growth : 2nd paper
Creators
Sano Osamu
Creators
Ogino Shoji
Creators
Mizuta Yoshiaki
Source Identifiers
Double torsion testing was carried out for seven specimens of Oshima granite and Murata basalt. About 200 acoustic emissions for each rock were monitored and their wave forms were stored digitally by a transient event recorder. Fourier analysis was carried out for the first motion of each acoustic emission. In log-log plots, the relation between the power spectrum and the frequency could be regarded as two straight lines and the corner frequency was determined by the intersection of these lines. Acoustic emissions having high corner frequency had the lower maximum power spectrum. The maximum power spectrum increased with increasing stress intensity factor at the tip of the macrocrack. The corner frequency, in contrast, decreased with increasing stress intensity factor.
Languages
eng
Resource Type
departmental bulletin paper
Publishers
山口大学工学部
Date Issued
1981-12
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]0386-3433
[NCID]AA0086073X
Schools
工学部