| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 766169 | Engineering Fracture Mechanics | 2016 | 17 Pages |
Abstract
Modifying and adding to elements of Schindler’s model, a model to predict arrest of rapidly propagating cracks in gas-pressurized steel pipe is presented. A bulging factor models the flaring of the crack flaps and contributes to the crack driving force. The crack tip, a structural hinge in each flap, a traveling neck ahead of the crack tip, and soil backfill contribute to the plastic dissipation rate. Model inputs are yield and ultimate strength, hardening exponent, crack-tip opening angle, soil density and Charpy V-Notch energy. Model predictions for steel grades ranging from X52 to X120, display modest non-conservatism.
Keywords
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
C. Hari Manoj Simha,