✦ LIBER ✦

Cyclic AE count rate and crack growth rate under low cycle fatigue fracture loading

✍ Scribed by Kang Yong Lee

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 364 KB
Volume: 34
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(89)90268-3

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✦ Synopsis

In the low cycle fatigue fracture testing with KS (or JJS) SW steel, crack growth rate, AE count rate and J-integral range are measured to get empirical mlation~ps between crack growth rate and J-integral range, AE count rate and J-integral range as well as AE count rate and crack growth rate. All the relationships are shown to be linear on the log-log graphs. It is also shown that the linear relationships can be formulated by using Dunegan's assumption and elastic-plastic fracture mechanics along with the well-known relationships of crack growth rate and J-integral range. It is concluded that the differences between experimental and theoretical values are due to the problem of Dunegan's assumption.

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