The University of Southampton
University of Southampton Institutional Repository

Investigation of the role of residual stresses in the warm prestressing (WPS) effect part II: analysis

Reed, P.A.S. and Knott, J.F. (1996) Investigation of the role of residual stresses in the warm prestressing (WPS) effect part II: analysis Fatigue and Fracture of Engineering Materials and Structures, 19, (4), pp. 501-513.

Record type: Article


Curry’s model [1] of the WPS effect has been applied to the results of the preceding paper, and is extended to treat warm prestressing in blunt notched test-pieces. The effect of more complex prestress cycles is also predicted by an extrapolation of the model. The effects of the LCF cycle can be reasonably predicted for both sharply precracked and blunt notched specimens. For the sharply precracked specimens the effects of the LUCF cycle at -196?C are consistently overpredicted and this may be due to a decrease in the cleavage fracture stress at -196?C of the material at the crack tip which has been subjected to repeated plastic straining by the combination of loading cycles. Modifications to the model are suggested which reduce the overprediction but a wide degree of scatter is observed in the experimental observations. Blunt notched specimens show a reasonable correlation between prediction and theory for the tensile LUCF cycle. Problems have been found in predicting the effect of various prestress cycles in different specimens due to the inherent variability in baseline fracture behaviour of the weld metal. It is concluded that the general trend of results is adequately explained by superposition models but that a greater understanding of local flow properties at a crack tip is required to achieve reasonable predictive success for weld metals such as A533BW.

Full text not available from this repository.

More information

Published date: 1996
Keywords: warm prestress effects, modelling WPS effects, A533B weld steel, notch plastic zones
Organisations: Engineering Mats & Surface Engineerg Gp


Local EPrints ID: 43055
ISSN: 8756-758X
PURE UUID: 77c8b694-9d2e-4fcb-98d7-5d3540b4b043
ORCID for P.A.S. Reed: ORCID iD

Catalogue record

Date deposited: 10 Jan 2007
Last modified: 17 Jul 2017 15:20

Export record


Author: P.A.S. Reed ORCID iD
Author: J.F. Knott

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.