SYMPOSIA PAPER Published: 01 January 2005

Assessment for Decrease in Threshold Stress Intensity Factor (SIF) Range Due to High Maximum SIF


In this paper, we consider the decrease in threshold stress intensity factor (SIF) range ▵Kth due to high maximum SIF K, which is observed for several materials in the tests with the Kmax constant method when closure-free conditions are realized. We proposed an assessment criterion to predict this phenomenon from the past data for Al and Ti and showed that the criterion is valid also for steels. Finally, we proposed a simplified model to explain the phenomenon, considering the fact that marks of static fracture are observed on the fracture surface.

Author Information

Meshii, T
University of Fukui, Fukui, Japan
Ishihara, K
Graduate School of Engineering, University of Fukui, Fukui, Japan
Watanabe, K
Institute of Industrial Science, University of Tokyo, Tokyo, Japan
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Developed by Committee: E08
Pages: 138–150
DOI: 10.1520/STP11491S
ISBN-EB: 978-0-8031-5505-3
ISBN-13: 978-0-8031-2410-3