Bibliographic Details
| Title: |
Estimation of the strength and lifetime of technical objects using the acoustic-emission method. |
| Authors: |
Nosov, V. V.1, Potapov, A. I.1, Burakov, I. N.1 |
| Source: |
Russian Journal of Nondestructive Testing. Feb2009, Vol. 45 Issue 2, p109-117. 9p. 1 Diagram, 2 Charts, 1 Graph. |
| Subjects: |
Acoustic emission testing, Geometrical constructions, Strength of materials, Estimation theory, Nondestructive testing |
| Abstract: |
Estimation of the lifetime of a construction consists of forecasting the time remaining before failure and is based on extrapolation of the time dependences of the state parameters of a technical object to their critical values. The use for this purpose of simplified damageability models (e.g., a hypothesis of linear summation of flaws) and the absolute values of acoustic-emission (AE) parameters (e.g., activity, counting rate, duration of pauses) leads to a dependence of the estimate results on a large number of destabilizing factors and, as a result, to low accuracy or laboriousness of these techniques. An earlier suggested micromechanical model of AE parameters makes it possible to find a trade-off between simplicity and accuracy. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
