Normalized life prediction in terms of stress relaxation behavior under creep-fatigue interaction

Citation
Cy. Jeong et al., Normalized life prediction in terms of stress relaxation behavior under creep-fatigue interaction, MATER LETT, 49(1), 2001, pp. 20-24
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS LETTERS
ISSN journal
0167-577X → ACNP
Volume
49
Issue
1
Year of publication
2001
Pages
20 - 24
Database
ISI
SICI code
0167-577X(200105)49:1<20:NLPITO>2.0.ZU;2-V
Abstract
A new normalized life prediction function based on a model in terms of stre ss relaxation during hold time under creep-fatigue condition is proposed. F rom the concept that the reduction of fatigue life with hold is due to the creep effect of stress relaxation, the relaxed stress range is suggested to be a creep-fatigue damage function. The creep-fatigue data from the presen t and other investigators are used to check the validity of the: proposed l ife prediction. It is shown that the data satisfy the applicability of the normalized life relation model. Accordingly, using this life prediction mod el, one may realize that all the Coffin-Manson plots at the various levels of hold time under strain-controlled creep-fatigue tests can be normalized to make one master curve. (C) 2001 Elsevier Science B.V. All rights reserve d.