The Open UniversitySkip to content
 

Determination of normal and shear residual stresses from fracture surface mismatch

Araujo de Oliveira, J.; Kowal, J.; Gungor, S. and Fitzpatrick, M. E. (2015). Determination of normal and shear residual stresses from fracture surface mismatch. Materials & Design, 83(C) pp. 176–184.

Full text available as:
[img]
Preview
PDF (Accepted Manuscript) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (3MB) | Preview
DOI (Digital Object Identifier) Link: https://doi.org/10.1016/j.matdes.2015.06.014
Google Scholar: Look up in Google Scholar

Abstract

The contour method of residual stress measurement has recently been adapted to measure fractured, rather than cut specimens. The “fracture contour method” was capable of determining normal residual stresses acting prior to the plane-strain failure of a large aluminium alloy forging, but shear residual stresses could not be measured (Prime et al., 2014).

We demonstrate that the application of digital image correlation to topographic measurements of a fracture surface pair allows the determination of shear residual stresses in addition to the normal stress component. Miniature compact tension samples were extracted at an angle from a bent beam to give a known variation in normal and shear residual stress on the fracture plane. The material used was a metal matrix composite, which could be deformed plastically to introduce a known distribution of stresses and also present limited plasticity upon fracture, allowing plane-strain condition in a small specimen. The samples were fractured at cryogenic temperatures to further restrict plasticity. Although the fracture surface was non-planar and evidence suggested the occurrence of plasticity near the edges, experimental results correlated fairly well with the calculated normal and shear residual stress profiles.

Item Type: Journal Item
Copyright Holders: 2015 Elsevier Inc.
ISSN: 0261-3069
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNot SetLloyd's Register Foundation
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 43524
Depositing User: Jeferson de Oliveira
Date Deposited: 24 Jun 2015 14:51
Last Modified: 02 Nov 2017 15:06
URI: http://oro.open.ac.uk/id/eprint/43524
Share this page:

Altmetrics

Download history for this item

These details should be considered as only a guide to the number of downloads performed manually. Algorithmic methods have been applied in an attempt to remove automated downloads from the displayed statistics but no guarantee can be made as to the accuracy of the figures.

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU