Constraint Parameter for a Longitudinal Surface Notch in a Pipe Submitted to Internal Pressure

The use of two parameters fracture mechanics criterion as a tool for structural design and analysis has increased significantly in recent years. First, we discuse the elastic solution for the stress distribution at crack tip for two dimensional geometries and particularly constraint as T-stress unde...

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Bibliographic Details
Published in:Key engineering materials 2009-01, Vol.399, p.3-11
Main Authors: Meliani, M Hadj, Benarous, M, Azari, Z, Pluvinage, G
Format: Article
Language:English
Online Access:Get full text
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Summary:The use of two parameters fracture mechanics criterion as a tool for structural design and analysis has increased significantly in recent years. First, we discuse the elastic solution for the stress distribution at crack tip for two dimensional geometries and particularly constraint as T-stress under various loading conditions. Secondly, using notch fracture mechanics and particularly the Volumetric Method approach, we study the stress distribution at the tip of a notch in pipes submitted to internal pressure. The Notch Stress Intensity Factor IC and the effective T-stress are combined into a two-parameter fracture criterion (Kip-Tef). This approach is then used to quantify the constraint of notch-tip fields for various pipe geometry and loading conditions.
ISSN:1013-9826