Similitude of residual stresses and the warm pre stress effect

Kim R. W. Wallin

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

    Abstract

    A material's apparent fracture toughness, at a specific temperature and loading rate, is affected by two factors: residual stresses and the so called Warm Pre Stress (WPS) effect. Residual stresses are global stresses, independent of a pre-existing flaw. They are generally due either to welding or thermal loads, but can also be introduced by plastic deformation. The WPS is due to a local plastic deformation of the material in front of a crack. The residual stresses can be either detrimental or beneficial, whereas WPS is always beneficial. Despite their different nature and origin, they do show a similitude on the apparent fracture toughness response. This similitude is highlighted here.
    Original languageEnglish
    Title of host publicationBaltica IX. International Conference on Life Management and Maintenance for Power Plants
    EditorsPertti Auerkari, Juha Veivo
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Pages50-62
    ISBN (Electronic)978-951-38-8025-5, 978-951-38-8026-2
    Publication statusPublished - 2013
    MoE publication typeA4 Article in a conference publication
    EventBALTICA IX - International Conference on Life Management and Maintenance for Power Plants - Helsinki-Stockholm, Finland
    Duration: 11 Jun 201313 Jun 2013

    Publication series

    SeriesVTT Technology
    Number106
    ISSN2242-1211

    Conference

    ConferenceBALTICA IX - International Conference on Life Management and Maintenance for Power Plants
    CountryFinland
    CityHelsinki-Stockholm
    Period11/06/1313/06/13

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