In the context of the formulation of a leak-before-break case for a component in a pressurized system, this paper is concerned with the quantification of the crack opening area associated with a two-dimensional crack that is subjected to tensile stresses. We present a simple method, based on the strip yield representation of plastic deformation, for calculating the area. The method is validated against the known result for the ease of an isolated crack in a uniformly stressed infinite solid. It is then used for a general stress distribution, as might arise from a combination of pressure induced and weld residual tensile stresses, with the considerations being focussed on the case where plastic deformation is limited, as is usually appropriate for normal operating situations; application of the method is then especially simple.
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ASME 2002 Pressure Vessels and Piping Conference
August 5–9, 2002
Vancouver, BC, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-1948-5
PROCEEDINGS PAPER
A Simplified Method for Calculating Crack Opening Area
E. Smith
E. Smith
Manchester University/UMIST, Manchester, UK
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E. Smith
Manchester University/UMIST, Manchester, UK
Paper No:
PVP2002-1170, pp. 15-18; 4 pages
Published Online:
August 14, 2008
Citation
Smith, E. "A Simplified Method for Calculating Crack Opening Area." Proceedings of the ASME 2002 Pressure Vessels and Piping Conference. Service Experience and Failure Assessment Applications. Vancouver, BC, Canada. August 5–9, 2002. pp. 15-18. ASME. https://doi.org/10.1115/PVP2002-1170
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