ISSN:
1662-8985
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 safe operation of both thermal and nuclear power plant is increasingly dependentupon structural integrity assessment of pressure vessels and piping. Furthermore, structural failuresmost commonly occur at welds so the accurate design and remnant life assessment of welded plantis critical. The residual stress distribution assumed in defect assessments often has a decidinginfluence on the analysis outcome, and in the absence of accurate and reliable knowledge of theweld residual stresses, the design codes and procedures use assumptions that yield very conservativeassessments that can severely limit the economic life of some plant. However, recent advances inboth the modeling and measurement of residual stresses in welded structures and components openup the possibility of characterising weld residual stresses in operating plant using state-of–the–artfully validated Finite Element simulations. This paper describes research undertaken to predictresidual stresses in stainless steel welds in order to provide validated reliable, accurate StructuralIntegrity assessment of nuclear power plant components
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.41-42.391.pdf
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