The Influence of Instrumented Striker Configuration on the Results of Dynamic Toughness Testing

Enrico Lucon, Marc Scibetta

    Research outputpeer-review

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    Several studies are available on the influence of the edge radius of instrumented strikers (ASTM – 8 mm or ISO – 2 mm) on the results of both non instrumented and instrumented Charpy tests. This paper investigates the effect of using either a 2 mm or a 8 mm striker when performing dynamic toughness tests at impact loading rates on precracked Charpy specimens. Existing data from tests run in the ductile-to-brittle region (dynamic Master Curve reference temperature) and in the upper shelf regime (ductile initiation fracture toughness and crack resistance curves) have been analyzed. The results show that 2 mm strikers tend to yield lower cleavage fracture toughness in the transition region (although the effect cannot be considered statistically significant), whereas the influence of striker configuration is negligible in the upper shelf regime when data are generated using the low-blow multiple-specimen technique.
    Original languageEnglish
    PublisherSCK CEN
    Number of pages11
    StatePublished - Sep 2008

    Publication series

    NameSCK•CEN Reports
    PublisherStudiecentrum voor Kernenergie

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