Digital Repository, ECF14, Cracow 2002

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Application of the Master Curve Approach for Dynamically Loaded Pressure Vessel Steels

Last modified: 2013-02-10


The master curve approach is a new concept for a fracture mechanics-basedintegrity assessment of pressurized engineering construction. It permits the determinationof fracture toughness properties with small-size specimens under quasi-static loadingconditions. The transfer of the quasi-static master curve approach to dynamical loadinglike Charpy impact testing would be expedient but is not trivial. In principle, the mastercurve approach seems to be applicable for dynamic loading. The detailed statisticalanalysis of the results, however, shows several shortcomings. The test temperature affectssignificantly the reference temperature, To. With small Charpy-size specimens valid valuesare only obtained if tested within the upper part of the lower shelf region. Approximately,the experimental results are compatible to the Weibull-distribution of the master curveconcept.

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