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|Title:||Failure assessment of a cracked circular hollow section T-joint including the effect of crack-front constraints|
|Authors:||Qian, X. |
|Source:||Qian, X.,Ou, Z.,Swaddiwudhipong, S. (2010). Failure assessment of a cracked circular hollow section T-joint including the effect of crack-front constraints. Tubular Structures XIII - Proceedings of the 13th International Symposium on Tubular Structures : 507-514. ScholarBank@NUS Repository.|
|Abstract:||This paper describes a procedure using the Failure Assessment Diagram (FAD) concept outlined in BS7910, to assess the interaction between the fracture failure and the plastic limit action for a Circular Hollow Section (CHS) T-joint with an initial semi-elliptical flaw, which was reported in a series of experimental investigation. The FAD approach applies the constraint-modification based on a linear-elastic T-stress computed along the front of the semi-elliptical surface crack, to the level 2A assessment curve in BS7910. The assessment of the fracture ratio K r utilizes the material fracture toughness reported in the experiment, while the load ratio L r compares the latest T-joint ultimate strength formulation in the IIW recommendations and the experimentally measured ultimate joint strength. The failure assessment outcome, both with constraint modification and without constraint modification, proves to be conservative compared to the experimental measurement on the T-joint. © 2010 The University of Hong Kong.|
|Source Title:||Tubular Structures XIII - Proceedings of the 13th International Symposium on Tubular Structures|
|Appears in Collections:||Staff Publications|
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