| Brief review and reconsideration of fatigue crack closure effect in materials | |
| D. L. Chen; B. Weiss; R. Stickler; Z. G. Wang | |
| 1997 | |
| Source Publication | Journal of Materials Science & Technology
 |
| ISSN | 1005-0302 |
| Volume | 13Issue:1Pages:40922 |
| Abstract | The state-of-the-art of fatigue crack closure effect, involving the mechanisms, measurements, models, evaluation methods, influencing factors and existing problems is briefly reviewed. Attention is concentrated on a new consideration of closure effect and a re-definition of the effective driving force for the propagation of a fatigue crack. A theoretical basis for measuring the closure effect is established. The proposed closure concept takes into account the role of the tower portion of loading cycle below the opening load. The conventional closure concept is proven to be correct only for some extreme cases which are practically non-existent for engineering materials. A miniature strain gauge technique is developed to measure the crack closure. Stress-ratio-change tests at threshold level clearly indicate the shortcomings of the conventional closure concept, and the validity of the newly-proposed closure concept. The application of the proposed concept can give rise to a new method for the determination of the effective fatigue threshold of materials. If the fatigue threshold is measured at a sufficiently negative stress ratio (R |
| description.department | acad sinica,inst met res,state key lab fatigue & fracture mat,shenyang 110015,peoples r china. univ vienna,inst phys chem mat sci,a-1090 vienna,austria. |
| Keyword | Finite-width Stress-ratio Threshold Growth Load Plate |
| URL | 查看原文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/37939 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | D. L. Chen,B. Weiss,R. Stickler,et al. Brief review and reconsideration of fatigue crack closure effect in materials[J]. Journal of Materials Science & Technology,1997,13(1):40922. |
| APA | D. L. Chen,B. Weiss,R. Stickler,&Z. G. Wang.(1997).Brief review and reconsideration of fatigue crack closure effect in materials.Journal of Materials Science & Technology,13(1),40922. |
| MLA | D. L. Chen,et al."Brief review and reconsideration of fatigue crack closure effect in materials".Journal of Materials Science & Technology 13.1(1997):40922. |
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