Volume 17, Issue 5 (September 1989)

    Regression Analysis of Single Specimen Fracture Toughness Data with Serially Correlated Errors

    (Received 9 November 1987; accepted 7 January 1989)

    CODEN: JTEOAD

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    Abstract

    The statistical properties of errors associated with J-integral estimates and crack growth measurements obtained by single specimen fracture toughness test methods are examined. It is shown that the errors in the J estimates can be serially correlated. Slope and intercept estimates and their standard errors are derived for the fitted line on the basis of a regression model, suggested by Mandel, which makes allowance for the serial correlation of errors in J. A theoretical model is developed to compare the scatter apparent on a Ja plot with the true error inherent in the data.


    Author Information:

    Moskovic, R
    Research Officer, Scientific and Technical Branch, OED (South), Central Electricity Generating Board, Gravesend, Kent

    Windle, PL
    Research Officer, Scientific and Technical Branch, OED (South), Central Electricity Generating Board, Gravesend, Kent


    Stock #: JTE11128J

    ISSN: 0090-3973

    DOI: 10.1520/JTE11128J

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    Title Regression Analysis of Single Specimen Fracture Toughness Data with Serially Correlated Errors
    Symposium , 0000-00-00
    Committee E08