• Residual stresses and fracture...

Result: Residual stresses and fracture mechanics analysis of a crack in welds of high strength steels

Title:
Residual stresses and fracture mechanics analysis of a crack in welds of high strength steels
Authors:
CHANG, Kyong-Ho, LEE, Chin-Hyung
Source:
WELDS 2005 - Design, testing, assessment and safety of high temperature welded structuresEngineering fracture mechanics. 74(6):980-994
Publisher Information:
Oxford; Tarrytown, NY: Elsevier, 2007.
Publication Year:
2007
Physical Description:
print, 19 ref
Original Material:
INIST-CNRS
Subject Terms:
Mechanics acoustics, Mécanique et acoustique, Metallurgy, welding, Métallurgie, soudage, Sciences exactes et technologie, Exact sciences and technology, Physique, Physics, Domaines classiques de la physique (y compris les applications), Fundamental areas of phenomenology (including applications), Mécanique des solides, Solid mechanics, Mécanique des structures et des milieux continus, Structural and continuum mechanics, Elasticité statique (thermoélasticité...), Static elasticity (thermoelasticity...), Inélasticité (thermoplasticité, viscoplasticité...), Inelasticity (thermoplasticity, viscoplasticity...), Mécanique de la rupture (fissure, fatigue, endommagement...), Fracture mechanics (crack, fatigue, damage...), Sciences appliquees, Applied sciences, Metaux. Metallurgie, Metals. Metallurgy, Assemblage et découpage thermique: aspects métallurgiques, Joining, thermal cutting: metallurgical aspects, Soudage, Welding, Acier haute résistance, High strength steel, Acero alta resistencia, Hochfester Stahl, Analyse contrainte, Stress analysis, Análisis tensión, Spannungsanalyse, Analyse dimensionnelle, Dimensional analysis, Análisis dimensional, Assemblage soudé, Welded joint, Ensamblaje soldado, Schweissverbindung, Contrainte résiduelle, Residual stress, Tensión residual, Eigenspannung, Elastoplasticité, Elastoplasticity, Elastoplasticidad, Essai traction, Tension test, Ensayo tracción, Zugversuch, Fissure, Crack, Fisura, Riss, Haute température, High temperature, Alta temperatura, Hochtemperatur, Intégrale J, J integral, Integral J, J Integral, Inélasticité, Inelasticity, Inelasticidad, Modélisation, Modeling, Modelización, Métal, Metal, Metalle, Méthode élément fini, Finite element method, Método elemento finito, Finite Element Methode, Propriété thermique, Thermal properties, Propiedad térmica, Thermische Eigenschaft, Propriété thermomécanique, Thermomechanical properties, Propriedad termomecánica, Rupture, Ruptura, Bruch, Résistance traction, Tensile strength, Resistencia tracción, Zugfestigkeit, Soudage, Welding, Soldadura, Schweissen, Transformation phase, Phase transformation, Transformación fase, Phasenumwandlung, Zone thermiquement affectée, Heat affected zone, Zona termoafectada, Waermeeinflusszone, J-integral, Martensite phase transformation, Residual stress relaxation
Document Type:
Conference Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Department of Civil and Environmental Engineering, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Korea, Republic of
Institute of Technology and Science, Chung-Ang University, 221, Huksuk-dong, Dongjak-ku, Seoul 156-756, Korea, Republic of
ISSN:
0013-7944
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=18518150
Rights:
Copyright 2007 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Metals. Metallurgy

Physics: solid mechanics
Accession Number:
edscal.18518150
Database:
PASCAL Archive

Further Information

This study presented the characteristics of residual stresses in welds of high strength steels (POSTEN60,POSTEN80) whose tensile strengths were 600 MPa and 800 MPa, respectively. Three-dimensional thermal elastic-plastic analyses were conducted to investigate the characteristics of welding residual stresses in welds of high strength steels through the thermal and mechanical properties at high temperatures obtained from the elevated temperature tensile tests. A finite element analysis method which can calculate the J-integral for a crack in a residual stress field was developed to evaluate the J-integral for a centre crack when mechanical stresses were applied in conjunction with residual stresses. The results show that the volumetric changes associated with the austenite to martensite phase transformation during rapid cooling after welding of high strength steels significantly influence on the development of residual stresses in the weld fusion zone and heat-affected zone. For a centre crack in welds of high strength steels where only residual stresses are present, increased tensile strength of the steel, increased the J-integral values. The values of the J-integral for the case when mechanical stresses are applied in conjunction with residual stresses are larger than those for the case when only residual stresses are present.