Validation of the acceptability of 10*20 mm specimens for fracture toughness determination of high-strength steels

Carey L. Walters, Lars O. Voormeeren, Michael Janssen, Kim Wallin

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

    3 Citations (Scopus)

    Abstract

    Standards have traditionally required that fracture toughness specimens be the full thickness of the base material. However, this requirement may be unnecessary, especially if minimum specimen size dimensions based on plastic zone are met and the subsized specimens are statistically adjusted for the size effect. The current paper presents the results for full-thickness proportional Single Edge Notched Bending (SENB) specimens according to BS7448-1 that are 25 mm by 50 mm in cross-section and then compares these results to specimens of the same material that are 10 mm by 20 mm in cross section. The result is that for a temperature near the lower portion of the transition curve (-60°C to -70°C), the subsize specimens are in very good agreement. These results hold for two different loading rates. After correction for statistical size effect, the fracture toughnesses of the subsize specimens are within 10% of the full-size specimens. This is conservative. The difference is attributed to the statistical nature of fracture in the transition region
    Original languageEnglish
    Title of host publicationASME 32nd International Conference on Ocean, Offshore and Arctic Engineering
    Subtitle of host publicationMaterials Technology: Ocean Space Utilization
    PublisherAmerican Society of Mechanical Engineers ASME
    Number of pages9
    Volume3
    ISBN (Print)978-0-7918-5535-5
    DOIs
    Publication statusPublished - 2013
    MoE publication typeNot Eligible
    EventASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2013 - Nantes, France
    Duration: 9 Jun 201314 Jun 2013
    Conference number: 32

    Conference

    ConferenceASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2013
    Abbreviated titleOMAE 2013
    CountryFrance
    CityNantes
    Period9/06/1314/06/13

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  • Cite this

    Walters, C. L., Voormeeren, L. O., Janssen, M., & Wallin, K. (2013). Validation of the acceptability of 10*20 mm specimens for fracture toughness determination of high-strength steels. In ASME 32nd International Conference on Ocean, Offshore and Arctic Engineering: Materials Technology: Ocean Space Utilization (Vol. 3). [V003T03A013] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/OMAE2013-10373