Prediction of toughness scatter in heat affected zones (HAZ) with local approach

Sainte-Catherine, C.; Fant, M. Di; Duquaire, Bruno; Balladon, P.

doi:10.1016/0013-7944(93)90308-f

Cited by 11 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The local approach has been used for prediction of failure of welded components, e.g. Fontaine et al [14], Sainte-Catherine et al [15] and Matos and Dodds [16] and has also been used to predict the effect of residual stresses in facture [4, 17 and 18].…”

Section: Introductionmentioning

confidence: 99%

Predicting the Influence of Residual Stresses on Brittle Fracture Using Local Approach

Mirzaee-Sisan¹,

Hadidi-Moud

Smith

2008

Volume 6: Materials and Fabrication, Parts a and B

View full text Add to dashboard Cite

This paper explores the application of the local approach to brittle fracture to predict the influence of residual stresses in a relatively thick pipe. Three different surface flaw sizes were assumed on the outside surface of the pipe and failure predictions were made using the local approach. Then the results of local approach prediction were compared with the well-known fracture assessment procedure, BS7910 which uses a failure assessment diagram (FAD). It has found that the local approach has an advantage of taking into account the details of stress re-distribution of residual stress around the crack tip compared to the conventional assessment procedure.

show abstract

Section: Introductionmentioning

confidence: 99%

Predicting the Influence of Residual Stresses on Brittle Fracture Using Local Approach

Mirzaee-Sisan¹,

Hadidi-Moud

Smith

2008

Volume 6: Materials and Fabrication, Parts a and B

View full text Add to dashboard Cite

show abstract

“…This approach combines theoretical, experimental and numerical methods, enabling less conservative assessment in structural integrity. Originally developed for predicting the toughness of steel for pressure vessels in nuclear plants and subsequently employed in the steel industry, it has been recently used to explain the fracture mechanisms in heterogeneous material, see [1][2][3][4]. It was developed for ductile and cleavage damage processes, and lately the phenomena related to the field of transition temperatures have been investigated using this approach.…”

Section: Introductionmentioning

confidence: 99%

Ductile Fracture Prediction of Steam Pipeline Steel

Zrilic¹,

Rakin²,

Sedmak³

et al. 2006

MSF

View full text Add to dashboard Cite

Considering the conditions to which steels used for the manufacture of steam pipelines are exposed, the micromechanism of their destruction in exploitation is exclusively the ductile one. In order to make an estimation of the level of the damage that occurs in exploitation, in this paper a combined experimental and numerical procedure has been developed based on micromechanical or local approach to the fracture mechanics of metallic materials. After the analysis of the results obtained for micromechanical criterion of failure for virgin steel and that used in the steam pipeline, a proposal for prolongation of the working life of tested steel for steam pipelines until the next overhaul is given.

show abstract

“…The Local Approach to cleavage fracture, as introduced by Beremin [3], accounts for both of these effects by correlating fracture probabilities with stress distributions ahead of the crack tip. Since it is based on a local stress criterion, directly reflecting microstructural features of the material assessed, it can also be used to investigate the influence of microstructural changes on the fracture resistance of steels [4,5]. Hence it could be used to derive microstructural requirements for improved toughness at the steel development stage or to provide guidelines for welding procedures in order to guarantee minimum toughness levels [2].…”

Section: Introductionmentioning

confidence: 99%

Application of the Local Approach to Cleavage Fracture to Failure Predictions of Heat Affected Zones

et al. 1996

View full text Add to dashboard Cite

With the increased capabilities of elastic-plastic finite element analyses and hence the possibilities to determine accurately the stress distribution ahead of sharp cracks the use of fracture risk predictions based on a local fracture parameter has recently attracted much interest. To date most investigations in this area concentrated on homogeneous materials avoiding the complications related to the complex situation of welded joints.In this paper results are presented where the Local Approach to cleavage fracture has been applied to the heat affected zone of two structural steel welds. Local cleavage fracture parameters were determined from tests and finite element modelling of notched tensile specimens. In all cases the properties of the weld metal, the parent material and the heat affected zone (HAZ) were determined. A thermal simulation technique was used to produce large enough areas of HAZ microstructures for tensile and notched tensile testing. Subsequent application of the Local Approach to the crack tip situation for the prediction of the dependence of fracture toughness on temperature and the scatter in fracture toughness only produced satisfactory results for a limited number of the situations modelled. Discrepancies between predictions and actual results are thought to be due partly to the differences in FE mesh and stress distribution between notched tensile and pre-cracked bend specimens.

show abstract

Prediction of toughness scatter in heat affected zones (HAZ) with local approach

Cited by 11 publications

References 5 publications

Predicting the Influence of Residual Stresses on Brittle Fracture Using Local Approach

Predicting the Influence of Residual Stresses on Brittle Fracture Using Local Approach

Ductile Fracture Prediction of Steam Pipeline Steel

Application of the Local Approach to Cleavage Fracture to Failure Predictions of Heat Affected Zones

Contact Info

Product

Resources

About