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12 - Aeronautical, Mechanical, Chemical and Manufacturing Engineering

University of Portsmouth

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Output 4 of 44 in the submission

Article title

A study of fatigue crack tip characteristics using discrete dislocation dynamics

Type

D - Journal article

DOI

10.1016/j.ijplas.2013.08.016

Title of journal

International Journal of Plasticity

Article number

n/a

Volume number

n/a

Issue number

First page of article

n/a

ISSN of journal

07496419

Year of publication

2013

URL

Number of additional authors

Additional information

This paper presents the first micromechanics study of fatigue crack tip characteristics in a polycrystalline material using Discrete Dislocation Dynamics. The results revealed, for the first time, that ratchetting is associated with microstructural changes, including dislocation accumulation, dislocation climb and dislocation-GB penetration, and dislocation climb is the dominant mechanism. The work offers a step closer towards developing a physical-based model for fatigue crack growth.

Interdisciplinary

Cross-referral requested

Research group

None

Proposed double-weighted

Double-weighted statement

Reserve for a double-weighted output

Non-English

English abstract