The Development of the Cavitated Volume Fraction as a Creep Damage Indicator for Creep Remnant Life Prediction

Mbombo Okpa, Qiang Xu, Joan Lu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


This paper highlights the advantages of using the cavitated volume fraction (fv) as a superior creep damage indicator compared to traditional two dimensional (2D) based parameters. With the emergence of three dimensional (3D) experimental techniques like X-ray tomography, in-situ volumetric observations have become feasible, enabling a more accurate assessment of creep damage. The cavitated volume fraction offers a comprehensive evaluation of cavity distribution, overcoming the limitations of missing information and the impact of cavity coalescence on 2D-based assessments. We present the procedure for deriving the cavitated volume fraction using the cavity size distribution function and the cavity growth pattern equation. Additionally, we discuss the potential application of the cavitated volume fraction for rupture time prediction using early-stage creep data. Overall, this paper emphasizes the importance of adopting 3D-based parameters, specifically the cavitated volume fraction, for improved creep damage assessment and lifetime prediction.
Original languageEnglish
Title of host publicationAdvances in Machinery, Materials Science and Engineering Application IX
Subtitle of host publicationProceedings of the 9th International Conference MMSE 2023
EditorsMin Chen, Marco Giorgetti, Bo Jin, Ramesh K. Agarwal
PublisherIOS Press
Number of pages9
ISBN (Electronic)9781643684390
ISBN (Print)9781643684383
Publication statusPublished - 17 Oct 2023
Event9th International Conference on Advances in Machinery, Materials Science and Engineering Applications - Paris, France
Duration: 22 Jul 202323 Jul 2023
Conference number: 9

Publication series

NameAdvances in Transdisciplinary Engineering
PublisherIOS Press
ISSN (Print)2352-751X
ISSN (Electronic)2352-7528


Conference9th International Conference on Advances in Machinery, Materials Science and Engineering Applications
Abbreviated titleMMSE 2023

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