The Study of Fatigue Crack Growth Shape under Mode I Constant Amplitude Loading

Wen Feng Tu; Zeng Liang Gao; Zhao Ji Hu

doi:10.4028/www.scientific.net/AMM.148-149.852

Paper Titles

Research on Influence of Contact Stress on the Hinge Moment Balance Measures
p.833

Level Mobile Shot Blasting Machine Shot Blasting Wheel in the Dynamic Simulation Based on ADAMS
p.837

Effect of Ar/O₂ Ratio and Substrate Temperature on the Hydrophilicity of SiO₂ Thin Films Prepared by RF Reactive Magnetron Sputtering
p.842

Constitutive Modelling of Sintering of 316L Stainless Steel Microsize Structures
p.846

The Study of Fatigue Crack Growth Shape under Mode I Constant Amplitude Loading
p.852

Application of Artificial Neural Networks for Prognostic Modeling of Fire Resistance of Reinforced Concrete Pillars
p.856

Conjugate Heat Transfer Analysis and Design Optimization of Internally Cooling Turbine Blade
p.862

Coverage Optimization Methods in Wireless Homo-Sensor Network Based on Guided Swarms
p.868

Study on Martensite Phase Transformation near Crack Tip of Mode II in Shape Memory Alloy
p.875

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 148-149The Study of Fatigue Crack Growth Shape under Mode...

The Study of Fatigue Crack Growth Shape under Mode I Constant Amplitude Loading

Abstract:

An experimental study was performed to study crack shape evolution of 16MnR pressure vessel steel by adopted compact tension (CT) specimens under Mode I constant amplitude loading. A data and numerical analysis of crack shape were conducted and the stress intensity factors (SIF) along crack front were calculated. The results revealed that curve crack shape could be described by elliptic equation properly and was similar in the stable crack growth stage. The initial crack shape was straight at the notch root, so SIF of the center was bigger than that of the surface. When the crack shape was curve, SIF of the center was smaller than that of the surface.