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Design and Performance Evaluation Methods for Crack Arrestor Enhanced Aluminum Marine Structures. Final Report.
| 题名： | Design and Performance Evaluation Methods for Crack Arrestor Enhanced Aluminum Marine Structures. Final Report. |
| 作者： | Paradkar, M; Xu, X; Hua, D. |
| 关键词： | Aluminum##Crack arrestor##High-speed |
| 摘要： | Large, high-speed aluminum vessels are usually required to maintain aggressive operating limitations to prevent failureby subcritical growth of manufacturing flaws and service-induced defects. Studies have shown that the arrest of crackpropagation can be achieved through either insertion of a local high fracture toughness material or reduction of the crackgrowth driving force. The lack of crack arrestor design procedures for aluminum structure has precluded an optimalselection of a mechanical arrestor device to stop the crack before reaching its critical state. This report aims at thedevelopment and verification of a design and performance evaluation method for crack arrestor enhanced aluminummarine structures. The objective of this project is to improve the existing modeling capability for crack initiation andpropagation. This will efficiently and reliably capture the effect of a crack arrestor on the fatigue and fracture performanceof a welded aluminum marine structure. Additionally, this improved capability will be used to explore an optimizeddesign of a crack arrestor to achieve a design requirement. |
| 总页数： | 74 pages |
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