An improvement on prediction of fatigue crack growth from low cycle fatigue properties
SCIE
SCOPUS
- Title
- An improvement on prediction of fatigue crack growth from low cycle fatigue properties
- Authors
- Li, DM; Nam, WJ; Lee, CS
- Date Issued
- 1998-07
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- Theoretical approaches are made in the present study to improve a former fatigue crack growth (FCG) model based on the conception of the local damage accumulation. A new da/dN-Delta K relationship is derived which predicts the stage-II FCG behavior independently from the basic low cycle fatigue properties. A satisfactory agreement is found between the predicted and the experimental data of da/dN-Delta K for a quenched and tempered high-strength steel with different strength levels, and an A533-B1 steel under various load ratios. Some potential physical implications of the new da/dN-Delta K relationship are also discussed. (C) 1998 Elsevier Science Ltd. All rights reserved.
- Keywords
- fatigue crack growth; low cycle fatigue; prediction; local damage accumulation; STRAIN-ENERGY; STRESS RATIO; GRAIN-SIZE; THRESHOLD; MODEL; PROPAGATION; STEEL; BEHAVIOR; METALS; ALLOYS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/20644
- DOI
- 10.1016/S0013-7944(98)00029-0
- ISSN
- 0013-7944
- Article Type
- Article
- Citation
- ENGINEERING FRACTURE MECHANICS, vol. 60, no. 4, page. 397 - 406, 1998-07
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