KPB et al_FFEMS_2019.pdf (3.05 MB)

Progressive failure monitoring and analysis in aluminium by in situ nondestructive evaluation

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journal contribution
posted on 03.09.2019, 08:53 by Brian J Wisner, Philipp Potstada, Vignesh I Perumal, Konstantinos Baxevanakis, Markus GR Sause, Antonios Kontsos
Damage initiation and progression in precipitate hardened alloys are typically linked to the failure of second phase particles that result from the precipitation process. These particles have been shown to be stress concentrators and crack starters as a result of both particle debonding and fracture. In this investigation, a precipitate hardened aluminium alloy (Al 2024-T3) is loaded monotonically to investigate the role the particles have in the progressive failure process. The damage process was monitored continuously by combining the acoustic emission method either with in situ scanning electron microscopy or X-ray microcomputed tomography to obtain both surface and volume microstructural information. Particles were observed to fracture only in the elastic regime of the material response, while void growth at locations predominantly near particles were found to be associated with progressive failure in the plastic region of the macroscopic response. Experimental findings were validated by fracture simulations at the scale of particle-matrix interface.

Funding

Young Investigator Program. Grant Number: N00014‐14‐1‐0571

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Fatigue & Fracture of Engineering Materials & Structures

Volume

42

Issue

9

Pages

2133 - 2145

Publisher

Wiley

Version

AM (Accepted Manuscript)

Rights holder

© Wiley Publishing Ltd.

Publisher statement

This is the peer reviewed version of the following article: Wisner BJ, Potstada P, Perumal VI, Baxevanakis KP, Sause MGR, Kontsos A. Progressive failure monitoring and analysis in aluminium by in situ nondestructive evaluation. Fatigue Fract Eng Mater Struct. 2019;42:2133–2145, which has been published in final form at https://doi.org/10.1111/ffe.13088. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

Acceptance date

04/06/2019

Publication date

2019-07-02

Copyright date

2019

ISSN

8756-758X

eISSN

1460-2695

Language

en

Depositor

Dr Konstantinos Baxevanakis

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