Advances on creep-fatigue damage assessment in notched components

Barbera, Daniele and Chen, Haofeng and Liu, Yinghua (2017) Advances on creep-fatigue damage assessment in notched components. Fatigue and Fracture of Engineering Materials and Structures, 40 (11). pp. 1854-1867. ISSN 8756-758X (https://doi.org/10.1111/ffe.12603)

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Abstract

In this paper, the extended Direct Steady Cyclic Analysis method (eDSCA) within the Linear Matching Method Framework (LMMF) is combined with the Stress Modified Ductility Exhaustion method and the modified Cavity Growth Factor (CGF) for the first time. This new procedure is used to systematically investigate the effect of several load parameters including load level, load type and creep dwell duration on the creep-fatigue crack initiation process in a notched specimen. The results obtained are verified through a direct comparison with experimental results available in the literature demonstrating great accuracy in predicting the crack initiation life and the driving mechanisms. Furthermore, this extensive numerical study highlighted the possible detrimental effect of the creep-ratchetting mechanism on the crack growth process. This work has a significant impact on structural integrity assessments of complex industrial components and for the better understanding of creep-fatigue lab scale tests.

ORCID iDs

Barbera, Daniele, Chen, Haofeng ORCID logoORCID: https://orcid.org/0000-0001-6864-4927 and Liu, Yinghua;
  • Item type:Article
    ID code:59827
    Dates:
    Date
    Event
    1 November 2017
    Published
    6 March 2017
    Published Online
    15 February 2017
    Accepted
    29 November 2016
    Submitted
    Notes:© 2017 Wiley Publishing Ltd. Barbera, D., Chen, H., and Liu, Y. (2017) Advances on creep–fatigue damage assessment in notched components. Fatigue Fract Engng Mater Struct, 40: 1854–1867. doi: 10.1111/ffe.12603. This is the peer reviewed version of the following article: Barbera, D, Chen, H & Liu, Y 2017, 'Advances on creep-fatigue damage assessment in notched components' Fatigue and Fracture of Engineering Materials and Structures, which has been published in final form at https://doi.org/10.1111/ffe.12603. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
    Subjects:Technology > Mechanical engineering and machinery
    Department:Faculty of Engineering > Mechanical and Aerospace Engineering
    Depositing user: Pure Administrator
    Date deposited:15 Feb 2017 15:37
    Last modified:11 Nov 2024 11:37
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/59827
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