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High temperature crack growth in alloy 800H and a 1%CRMOV steel - the results of an EGF round robin

: Djavanroodi, F.; Webster, G.A.; Holdsworth, S.R.; Hollstein, T.

Engineering Materials Advisory Services Ltd. -EMAS-, Cradley Heath:
Failure Analysis - Theory and Practice. ECF 7. Vol.II
Warley, 1988
ISBN: 0-9478-1732-8
European Conference on Fracture (ECF) <7, 1988, Budapest>
Conference Paper
Fraunhofer IWM ()

The paper presents the results of a Creep Crack Growth Round Robin conducted by the EGF Working Party set up to consider the "Measurement of Crack Growth under High Temperature Conditions". Data from twenty-four laboratories are compared, 'as-determined' by the participants and following a unified evaluation. The unified assessment is responsible for a significant reduction in the width of the creep crack growth rate databand, for a given C integral. The scatter associated with the same data, expressed in terms of stress intensity factor K, is not reduced by adopting a common approach. (IWM)