Improved crack growth corrections for J-R-curve testing

Kim Wallin (Corresponding Author), Anssi Laukkanen

    Research output: Contribution to journalArticleScientificpeer-review

    32 Citations (Scopus)

    Abstract

    The ASTM JR-curve testing standard contains an incremental crack growth correction to J, whereas the ESIS P2 test procedure contains a correction for the total crack growth. The ASTM expression is only applicable to single specimen JR-curve testing in contrast to the ESIS expression which is also applicable for multi-specimen tests. The ASTM expression is, however, considered to be more accurate than the ESIS expression. It is of interest to unify the test procedures so that irrespective of standard, the same result would be obtained. Having this goal in mind, the different crack growth corrections have been examined and compared both with each other as well as with other analytical and numerical estimates, applicable both in incremental as well as integral form. As a result a new correction is proposed, which is capable of unifying the different testing standards.
    Original languageEnglish
    Pages (from-to)1601 - 1614
    Number of pages14
    JournalEngineering Fracture Mechanics
    Volume71
    Issue number11
    DOIs
    Publication statusPublished - 2004
    MoE publication typeA1 Journal article-refereed

    Keywords

    • crack growth
    • crack growth rate
    • fatique
    • ProperTune

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