Simulation of fatigue behaviour in fusion welded 2024-T351

Date published

2004

Free to read from

Supervisor/s

Journal Title

Journal ISSN

Volume Title

Publisher

Institute of Materials Engineering Australasia

Department

Type

Article

ISSN

0160-7952

Format

Citation

F. Lefebvre, G. Serrano, S. Ganguly, I. Sinclair, Simulation of fatigue behaviour in fusion welded 2024-T351, Materials Forum, 2004, Vol. 28, pp1110-1115

Abstract

A model has been developed to predict short crack fatigue life in the fusion zone of Metal Inert Gas (MIG) welded 2024-T351, based on the observed propensity for complex, multiple cracking processes in this region. To initiate cracks, a Monte-Carlo method has been used, based on the probability of initiation at interdendritic defects derived from the experimental observations. Short crack propagation simulation has been achieved via a microstructurally sensitive approach using continuous dislocation distribution methods. Different geometrical conditions to define crack shielding or crack coalescence have also been identified, along with a first order estimate of crack closure effects and associated influences of residual stress on crack growth. In the regime of specific interest here (crack growth to 1mm total length), good correlation is shown between measured and predicted fatigue performance.

Description

Software Description

Software Language

Github

Keywords

short crack, modelling, fatigue, welding

DOI

Rights

Relationships

Relationships

Supplements

Funder/s