Ductile fracture and lifetime prediction of structural materials and components under high-temperature creep conditions

The problem of long-term strength prediction of structural materials under uniaxial and biaxial creep conditions, which give rise to ductile fracture, is considered. A new approach to long-term fracture modelling based on constitutive equations of the “isochronous creep theory” and criteria of ducti...

Full description

Saved in:
Bibliographic Details
Published in:International journal of mechanical sciences 2002-05, Vol.44 (5), p.1017-1032
Main Authors: Golub, V.P., Christ, H.J., Byrne, J.
Format: Article
Language:English
Subjects:
Bending (deformation)
Building materials
Computer simulation
Ductile fracture
Exact sciences and technology
Fracture mechanics (crack, fatigue, damage...)
Fracture mechanics, fatigue and cracks
Fundamental areas of phenomenology (including applications)
Heat resistance
High temperature effects
Physics
Pressure effects
Rheology
Solid mechanics
Structural and continuum mechanics
Tensile testing
Torsional stress
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The problem of long-term strength prediction of structural materials under uniaxial and biaxial creep conditions, which give rise to ductile fracture, is considered. A new approach to long-term fracture modelling based on constitutive equations of the “isochronous creep theory” and criteria of ductile fracture is suggested. The change in the momentary tangential modulus specifies the materials rheological behaviour and a value tending to zero is assumed as the ductile fracture criterion. Using the model the times to fracture of rods, beams and thin-walled tubes made of high-temperature and heat-resistant materials are estimated and they show good agreement with experimental data.
ISSN:0020-7403
1879-2162
DOI:10.1016/S0020-7403(02)00004-8