Back to Search
Start Over
Assessment of the effect of residual stresses in elastic-plastic fracture of dissimilar welded components
- Source :
- Abburi Venkata, K, Truman, C, Coules, H, Dey, S & Pirling, T 2017, ' Assessment of the effect of residual stresses in elastic-plastic fracture of dissimilar welded components ', Materials at High Temperatures, vol. 34, no. 5-6, pp. 492-499 . https://doi.org/10.1080/09603409.2017.1378965
- Publication Year :
- 2017
-
Abstract
- Residual stresses in welds pose a significant threat to the structural integrity of a component, especially in the presence of defects and are required to be accounted for in assessing component safety. Although the R6 assessment procedure suggests various approximate methods for incorporating these effects in defect assessment, most of them are overly conservative and not very cost-effective. A more reliable approach is to characterise the weld residual stresses around a defect and study how they interact with primary load. The current paper analyses the effects of weld residual stresses on the fracture of a dissimilar weld in the presence of defect. The weld is made between modified 9Cr–1Mo steel and 316LN stainless steel using autogenous electron beam welding. A C(T) specimen was extracted from the centre of the weld and a crack introduced in the fusion zone using electro-discharge machining. The residual stresses around the crack were measured on a grid of measurement points at mid-thickness of the C(T) specimen using neutron diffraction on the strain diffractometer SALSA at ILL, Grenoble. The measured residual stresses around the crack-tip were incorporated into a finite element model and the interaction of these with applied load was predicted under fracture.
- Subjects :
- musculoskeletal diseases
elastic-plastic fracture
Materials science
Neutron diffraction
02 engineering and technology
Welding
finite element analysis
law.invention
neutron diffraction
0203 mechanical engineering
Residual stress
law
Component (UML)
Materials Chemistry
Composite material
Mechanical Engineering
Metals and Alloys
technology, industry, and agriculture
Structural integrity
Weld residual stresses
respiratory system
021001 nanoscience & nanotechnology
Condensed Matter Physics
Finite element method
Elastic plastic
020303 mechanical engineering & transports
Mechanics of Materials
Ceramics and Composites
Fracture (geology)
0210 nano-technology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Abburi Venkata, K, Truman, C, Coules, H, Dey, S & Pirling, T 2017, ' Assessment of the effect of residual stresses in elastic-plastic fracture of dissimilar welded components ', Materials at High Temperatures, vol. 34, no. 5-6, pp. 492-499 . https://doi.org/10.1080/09603409.2017.1378965
- Accession number :
- edsair.doi.dedup.....a2c7c3997f17130eb2254e6548dbd054
- Full Text :
- https://doi.org/10.1080/09603409.2017.1378965