Monotonic and Cyclic J-integral Estimation for Through-Wall Cracked Straight Pipes

The evaluation of energy release rate and centre Crack Opening Displacement (COD) for circumferential Through-Wall Cracked (TWC) pipes is an important issue in the assessment of critical crack length for unstable fracture. The ability to predict crack growth continues to be an important component of research for several structural materials. Crack growth predictions can aid the understanding of the useful life of a structural component and the determination of inspection intervals and criteria. In this context, studies were carried out at CSIR-SERC on Nuclear Power Plant (NPP) piping components subjected to monotonic as well as cyclic loading to assess the damage for crack growth due to low-cycle fatigue in circumferentially TWC pipes.

Authors:

• Rohit
• S. Vishnuvardhan
• P. Gandhi
• Nagesh R. Iyer

Keywords:

• 304LN stainless steel
• cyclic J-integral
• Elastic- Plastic Fracture Mechanics
• J-integral
• Through-wall crack

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