The Open UniversitySkip to content
 

Evolution of Residual Stresses with Fatigue Crack Growth in a Variable Polarity Plasma Arc–Welded Aluminum Alloy Compact Tension Specimen

Liljedahl, C. D. M.; Zanellato, O.; Edwards, L. and Fitzpatrick, M. E. (2008). Evolution of Residual Stresses with Fatigue Crack Growth in a Variable Polarity Plasma Arc–Welded Aluminum Alloy Compact Tension Specimen. Metallurgical and Materials Transactions A, 39(10) pp. 2370–2377.

URL: http://www.springerlink.com/content/f60222k16h933j...
DOI (Digital Object Identifier) Link: https://doi.org/10.1007/s11661-008-9602-6
Google Scholar: Look up in Google Scholar

Abstract

The evolution of the residual stresses during fatigue crack growth in a welded compact tension C(T) specimen was measured using neutron diffraction. The measurements were performed by growing a fatigue crack in a sample in situ on a neutron diffractometer. The stresses were found to be unaffected by crack growth through the compressive part of the initial residual stress field. The residual stresses at the crack tip increased when the crack entered the tensile residual stress field to maintain residual stress equilibrium. Finite element (FE) modeling of the evolution of the residual stresses showed good correlation with the experimental results. The residual stress evolution was found to be governed by redistribution of the initial stress field and only slightly affected by fatigue-induced effects at the measured spatial resolution (2 mm × 2 mm × 7 mm).

Item Type: Journal Item
ISSN: 1543-1940
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 11478
Depositing User: Michael E. Fitzpatrick
Date Deposited: 27 Aug 2008 06:12
Last Modified: 02 Nov 2017 15:06
URI: http://oro.open.ac.uk/id/eprint/11478
Share this page:

Altmetrics

Actions (login may be required)

Policies | Disclaimer

© The Open University   contact the OU