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Cumulative damage of welded joints /
Fatigue is a mechanism of failure which involves the formation and growth of cracks under the action of repeated stresses. Ultimately, a crack may propagate to such an extent that total fracture of the member may occur. To avoid fatigue it is essential to design the structure with inherent fatigue s...
| Clasificación: | Libro Electrónico |
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| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Boca Raton, Florida ; Cambridge, England :
CRC Press : Woodhead Publishing Limited,
2006.
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| Colección: | Woodhead Publishing in materials.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Cover; Cumulative damage of welded joints; Copyright; Contents; Preface; Nomenclature; 1 Introduction; 1.1 Background; 1.2 Characteristics of fatigue cracking; 1.3 Fatigue testing; 1.4 The S-N curve and fatigue strength; 1.5 Fracture mechanics assessment of constant amplitude fatigue behaviour; 2 The constant amplitude database; 2.1 Introduction; 2.2 Method of analysis and joint design classification; 2.3 Influence of plate thickness; 2.4 Influence of mean stress; 3 Residual stresses; 3.1 Introduction; 3.2 The formation of residual stresses.
- 3.3 Comparison between static and fatigue conditions3.4 Approximate theoretical analysis; 3.5 Tests on welded specimens under constant amplitude loading; 3.6 Prior overloading; 4 Variable amplitude loading and testing; 4.1 Introduction; 4.2 Variable amplitude loading; 4.3 Rainflow counting; 4.4 Reservoir counting; 4.5 Level-crossing counting; 4.6 Statistical interpretation of count data; 4.7 Miner's rule; 4.8 Variable amplitude fatigue testing: a brief history; 5 Tests under two and three level loading; 5.1 Introduction; 5.2 Theoretical analysis.
- 5.3 Fatigue tests using stress sequences with excursions of two sizes5.4 Influence of stress ratio and residual stresses; 5.5 Summary of findings; 6 The influence of spectrum shape and block length; 6.1 Introduction; 6.2 Fatigue tests under concave upwards spectra; 6.3 Fatigue tests under Rayleigh and Laplace loading spectra; 6.4 Tests under Weibull stress spectra; 6.5 Influence of spectrum shape and clipping ratio combined; 6.6 Influence of block length and clipping ratio combined; 6.7 Influence of block length and spectrum shape combined; 6.8 Summary.
- 7 The influence of narrow band, wide band and service loading7.1 Introduction; 7.2 Comparing loading types; 7.3 Tests under narrow band loading; 7.4 Tests under wide band loading; 7.5 Tests under service loading spectra; 7.6 Summary; 8 The influence of cycles of small stress range; 8.1 Introduction; 8.2 Block testing of low stresses; 8.3 Comparative tests on stress relieved joints; 8.4 Predicting fatigue life; 8.5 Summary; 9 Design for variable amplitude loading; 9.1 Introduction; 9.2 Testing for different types of stress; 9.3 The area rule; 9.4 Possible modifications to Miner's rule.
- 9.5 The fracture mechanics approach10 More on the fracture mechanics approach
- the effect of stress interaction; 10.1 Introduction; 10.2 Summary of experimental evidence about stress interaction effects; 10.3 Discussion; 10.4 Concluding remarks; Appendix A: Statistical analysis of constant amplitude test data; Appendix B: Fatigue loading spectra; B1 Introduction; B2 The Markov transition matrix; B3 Two-parameter Weibull distribution; B4 Rayleigh distribution used by Schilling et al. (USA); B5 Gauss spectrum used by Haibach and Overbeeke.
- B6 The WASH spectrum
- North Sea Wave Action Standard History.