✦ LIBER ✦

A statistical analysis of da/dN test data

✍ Scribed by Chen-Tung Kao; Wen-Ting Liu

Publisher: Elsevier Science
Year: 1982
Tongue: English
Weight: 67 KB
Volume: 16
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(82)90074-1

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✦ Synopsis

Abstra&-The concept of "safe crack propagation" which relates to life prediction is discussed in this paper. It is shown that the variability of fatigue-crack propagation data results essentially from the differences of number of cycles for crack propagation from initial length n, to assigned terminal length a; for different specimens while the test using only one specimen. even for many observed values, gives very little information concerning the variability of the material or component and that of test procedure.

A statistical approach appropriate to da/d&' data has been investigated. When a group of u specimens is

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