Skip to content

A 3D full-field study of cracks in a nuclear graphite under mode I and mode II cyclic dwell loading conditions

Research output: Contribution to journalArticle

3D full-field deformation around crack tips in a nuclear graphite has been studied under mode I and mode II cyclic dwell loading conditions using Digital Volume Correlation (DVC) and integrated finite element (FE) analysis. A cracked Brazilian disk specimen of Gilsocarbon graphite was tested at selected loading angles to achieve mode I and mode II cyclic dwell loading conditions. Integrated FE analysis was carried out with the three-dimensional displacement fields measured by DVC injected into the FE model, from which the crack driving force J-integral was obtained using a damaged plasticity material model. The evolution of near-tip strains and the J-integral during the cyclic dwell loading was examined. Under cyclic dwell, residual strain accumulation was observed for the first time. The results shed some light on the effect of dwell time on the 3D crack deformation and crack driving force in Gilsocarbon under cyclic mode I and II loading conditions.
Original languageEnglish
Number of pages12
JournalFatigue & Fracture of Engineering Materials & Structures
Early online date22 Dec 2019
DOIs
Publication statusEarly online - 22 Dec 2019

Documents

  • FFEMS_Graphite_Tong

    Rights statement: This is the peer reviewed version of the following article: Wigger, T, Lin, B, Lupton, C, Marrow, J, Tong, J. A 3D full‐field study of cracks in a nuclear graphite under mode I and mode II cyclic dwell loading conditions. Fatigue Fract Eng Mater Struct. 2019; 1– 12, which has been published in final form at https://doi.org/10.1111/ffe.13183. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

    Accepted author manuscript (Post-print), 1.4 MB, PDF document

    Due to publisher’s copyright restrictions, this document is not freely available to download from this website until: 22/12/20

Related information

Relations Get citation (various referencing formats)

ID: 16871681