On Characteristics of Weibull Distribution Parameters of Fatigue Crack Growth Lives


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This paper illustrates the characteristics of parameters for three-parameter Weibull probability distribution of fatigue crack growth lives under constant stress intensity factor control experiments. Applying the statistical properties of the previous experimental results, the fatigue crack curves were simulated by using the non-Gaussian random fields simulation method and analyzed for the different specimen thickness and stress intensity level to determine the probability distributions of the fatigue crack growth life.



Key Engineering Materials (Volumes 261-263)

Edited by:

Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka




S. J. Kim et al., "On Characteristics of Weibull Distribution Parameters of Fatigue Crack Growth Lives", Key Engineering Materials, Vols. 261-263, pp. 1275-1280, 2004

Online since:

April 2004




[6] as an example. The tests were carried out on compact tension specimens of 100mm width and 6, 12, 18mm thick. All test specimens were oriented in the longitudinal (LT) direction. Tests were performed in constant stress intensity factor range conditions in servo-hydraulic testing machine with a cyclic frequency of 10Hz and stress ratio of 0. 2 in air at room temperature. A set of 5 specimens used to examine the fatigue crack growth behavior for each condition. A total of sixty specimens were tested.

DOI: https://doi.org/10.7717/peerj.1840/table-2

[26] [28] [30] [32] [34] [36] [38] [40] [42] 0 2 4 6 8 1012141618 ∆K=45 ∆K=37. 5 ∆K=30 ∆K=25.