Developments in the Treatment of Residual Stresses in Welded Components
| Autor: | Mark Jackson, Peter James, Adam Toft, P. R. Hurrell, S. K. Bate, R. Charles, John Sharples, Ian Symington |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
business.industry Mechanical Engineering Structural integrity Fracture mechanics Welding Structural engineering Condensed Matter Physics law.invention Cracking Mechanics of Materials law Residual stress Fracture (geology) General Materials Science Displacement (orthopedic surgery) business Stress intensity factor |
| Zdroj: | Materials Science Forum. 681:73-78 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.681.73 |
| Popis: | A long-term UK research programme on environmentally assisted cracking (EAC), residual stresses [1, 2] and fracture mechanics [3, 4] was launched in 2004. It involves Rolls-Royce plc and Serco Technical Services, supported by UK industry and academia. The residual stress programme is aimed at progressing the understanding of residual stresses and on the basis of this understanding manage how residual stresses affect the structural integrity of plant components. Improved guidance being developed for the treatment of residual stresses in fracture assessments includes the use of stress intensity factor solutions for displacement controlled loading as opposed to the more commonly used load controlled solutions. Potential reductions in crack driving force are also being investigated in relation to (i) utilizing a residual stress field that has “shaken-down” due to operational loads, (ii) introducing a crack progressively as opposed to instantaneously, and (iii) allowing for the fact that a crack may have been initiated during the life of a component as opposed to being present from the start-of-life. This paper describes some of these latest developments in relation to residual stress effects |
| Databáze: | OpenAIRE |
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