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Multiaxial notch fatigue : from nominal to local stress/strain quantities /
Metal and composite components used in structural engineering not only contain geometrical features resulting in stress concentration phenomena, but they are also subjected to in-service multiaxial fatigue loading. To address the problem, structural engineers need reliable methodologies which allow...
| Clasificación: | Libro Electrónico |
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| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Boca Raton, Fla. : Cambridge :
CRC Press ; Woodhead,
�2009.
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| Colección: | Woodhead Publishing in materials.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Cover; Multiaxial notch fatigue: From nominal to loacal stress/strain quantities; Copyright; Contents; Nomenclature; Foreword; Introduction; Dedication; 1 Useful stress quantities used in fatigue problems; 1.1 Introduction; 1.2 Stress state; 1.3 Mohr's circles under plane stress; 1.4 Amplitude, mean value, range and load ratio, R, under uniaxial cyclic loading; 1.5 Stress components relative to a generic material plane: the tridimensional problem; 1.6 Amplitude, mean and maximum value of the stress normal to a given material plane.
- 1.7 Amplitude and mean value of the shear stress relative to a given material plane1.8 Stress concentration factor, Kt; 1.9 Singular stress fields; 1.10 References; 2 Fundamentals of fatigue assessment; 2.1 Introduction; 2.2 Fatigue strength and W�ohler curves; 2.3 The mean stress effect under uniaxial fatigue loading; 2.4 The notch effect in fatigue; 2.5 Linear Elastic Fracture Mechanics to predict fatigue damage in cracked bodies; 2.6 Different links between Linear Elastic Fracture Mechanics and continuum mechanics; 2.7 The Theory of Critical Distances.
- 2.8 Fatigue assessment under torsional loading2.9 Fatigue damage under multiaxial fatigue loading; 2.10 References; 3 The Modified W�ohler Curve Method in fatigue assessment; 3.1 Introduction; 3.2 Fatigue damage model; 3.3 Degree of multiaxiality of the stress field damaging the fatigue process zone according to the MWCM; 3.4 The Modified W�ohler Curve Method; 3.5 Use of the MWCM to estimate high-cycle multiaxial fatigue strength; 3.6 Use of the MWCM to estimate finite life under multiaxial fatigue loading; 3.7 References.
- 4 Fatigue assessment of notched components according to the Modified W�ohler Curve Method4.1 Introduction; 4.2 Inherent and external multiaxiality; 4.3. The MWCM applied in terms of nominal stresses; 4.4 The MWCM applied along with the TCD to estimate notch fatigue strength; 4.5 References; 5 Multiaxial fatigue assessment of welded structures; 5.1 Introduction; 5.2 Stress quantities used to assess welded structures; 5.3 Preliminary assumptions; 5.4 MWCM and nominal stresses; 5.5 MWCM and hot-spot stresses; 5.6 The MWCM applied in terms of the PM to perform the fatigue assessment of weldments.
- 5.7 References6 The Modified W�ohler Curve Method and cracking behaviour of metallic materials under fatigue loading; 6.1 Introduction; 6.2 Crack initiation in single crystals; 6.3 Stage I and Stage II in polycrystals subjected to uniaxial fatigue loading; 6.4 Mesoscopic cracking behaviour of metallic materials under multiaxial fatigue loading; 6.5 The MWCM and structural volume; 6.6 The problem of estimating fatigue limits; 6.7 Concluding remarks; 6.8 References; 7 The Modified Manson-Coffin Curve Method in fatigue assessment; 7.1 Introduction.