Abstract
Acoustic emission generated by the nucleation of a microcrack in the proximity of a macrocrack is discussed in this paper. On the basis of some simple approximations the acoustic emission from a crack-opening event is directly related to its crack-opening volume as a function of time. It is shown that the nucleation of a microcrack in the immediate vicinity of a macrocrack generates additional crack-opening volumes for both the macrocrack and the microcrack, whose signals tend to be much larger than those that would emanate from a nucleating solitary microcrack.
Original language | English (US) |
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Pages (from-to) | 523-532 |
Number of pages | 10 |
Journal | Journal of Sound and Vibration |
Volume | 89 |
Issue number | 4 |
DOIs | |
State | Published - Aug 22 1983 |
Externally published | Yes |
Funding
This work was carried out in the course of research sponsored by the Office of Naval Research under Contract N00014-7-74-C0063.
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Acoustics and Ultrasonics
- Mechanical Engineering