Journal Published Online: 01 September 1989
Volume 17, Issue 5

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

CODEN: JTEVAB

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
Scientific and Technical Branch, OED (South), Central Electricity Generating Board, Gravesend, Kent, England
Windle, PL
Scientific and Technical Branch, OED (South), Central Electricity Generating Board, Gravesend, Kent, England
Pages: 8
Price: $25.00
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Stock #: JTE11128J
ISSN: 0090-3973
DOI: 10.1520/JTE11128J