SYMPOSIA PAPER Published: 01 January 1988
STP33083S

Use of -Curves for Design in the Elastic-Plastic Fracture Mechanics Regime

Source

Prediction of initiation and maximum pressure was made for two geometrically similar pressure vessels with a fivefold difference in size for two choices of steel. The vessels were supposed to contain a semielliptical axial defect in the outer surface of the cylindrical section and were subjected to internal pressure. Discussion is offered on the choice of data from plane-sided or side-grooved pieces and on the definition and geometric variability of the R-curves. Use of a normalized R-curve to allow transfer of data from a sample to the structure, beyond J-controlled growth, is examined and a comparison is made of all these cases. For these examples, the main effect of the choice of toughness data is on the extent of stable growth prior to maximum load.

Author Information

Turner, CE
Mechanical Engineering Department, Imperial College, London, U.K.
Etemad, MR
Mechanical Engineering Department, Imperial College, London, U.K.
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Details
Developed by Committee: E08
Pages: 356–373
DOI: 10.1520/STP33083S
ISBN-EB: 978-0-8031-5041-6
ISBN-13: 978-0-8031-0972-8