Notch sensitivity and defect sensitivity under fatigue loading : Two sides of the same medal
Notch sensitivity and defect sensitivity are two different aspects of the fatigue behavior of materials. This paper extends the Kitagawa diagram to blunt cracks (U-shaped notches) and presents the simple expression (a*/a(0)) exp 0.5 = K(t). In such an expression a(0) is the El-Haddad length paramete...
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| Published in | International journal of fracture Vol. 107; no. 1; pp. L3 - L8 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
Heidelberg
Springer
2001
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0376-9429 |
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| Abstract | Notch sensitivity and defect sensitivity are two different aspects of the fatigue behavior of materials. This paper extends the Kitagawa diagram to blunt cracks (U-shaped notches) and presents the simple expression (a*/a(0)) exp 0.5 = K(t). In such an expression a(0) is the El-Haddad length parameter, and a* is a particular blunt crack depth corresponding to the intersection between the delta-K(th) and delta-sigma(0)/K(t) curves. The new expression provides an explicit bridging between the notch sensitivity and the sensitivity to defects. (Author) |
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| AbstractList | Notch sensitivity and defect sensitivity are two different aspects of the fatigue behavior of materials. This paper extends the Kitagawa diagram to blunt cracks (U-shaped notches) and presents the simple expression (a*/a(0)) exp 0.5 = K(t). In such an expression a(0) is the El-Haddad length parameter, and a* is a particular blunt crack depth corresponding to the intersection between the delta-K(th) and delta-sigma(0)/K(t) curves. The new expression provides an explicit bridging between the notch sensitivity and the sensitivity to defects. (Author) |
| Author | ATZORI, Bruno LAZZARIN, Paolo |
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| Keywords | Notch sensitivity Sensitivity Stress distribution U shape Stress coefficient concentration Crack depth Fatigue strength Materials properties Mechanical properties Fatigue limit Fatigue loading Defects |
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| Snippet | Notch sensitivity and defect sensitivity are two different aspects of the fatigue behavior of materials. This paper extends the Kitagawa diagram to blunt... |
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| SubjectTerms | Cross-disciplinary physics: materials science; rheology Exact sciences and technology Fatigue, corrosion fatigue, embrittlement, cracking, fracture and failure Fatigue, embrittlement, and fracture Materials science Physics Treatment of materials and its effects on microstructure and properties |
| Title | Notch sensitivity and defect sensitivity under fatigue loading : Two sides of the same medal |
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