Journal Published Online: 11 December 2008
Volume 5, Issue 10

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

CODEN: JAIOAD

Abstract

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.

Author Information

Lucon, Enrico
Institute of Nuclear Material Science, SCK⋅CEN, Mol, Belgium
Pages: 8
Price: $25.00
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Details
Stock #: JAI102092
ISSN: 1546-962X
DOI: 10.1520/JAI102092