ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The corrosion, corrosion fatigue and fracture failure process of aircraft structure isdirectly concerned with combined effect of many factors, such as load, material characteristics,corrosive environment and so on. The process is very complicated, and there is typical randomness.Based on probabilistic fracture mechanics, with consideration of the limitation of the conventionalprobabilistic approaches for prediction of corrosion fatigue life of aircraft structure at present, and anew reliability approach under loading spectrum was proposed, in which corrosion damage andfatigue crack damage was united as a same damage parameter. Short crack and long crack growthbehavior was separately discussed, and influence of short crack aspect ratio on structure life wasdiscussed. The Advanced First-Order Reliability Method, Importance Sampling Method anditeratively advanced Second-Order Reliability Method were used to compute the fracture failureprobability. The results show that the model is feasible. By sensitivity analysis of random parameter,the important parameter was obtained, which helped to monitor the structure fatigue life
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.943.pdf
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