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A suitable test technique and experimental procedure have been developed in CISE for instrumented impact testing of sub-sized Charpy specimens, both V-notched and fatigue precracked, on a 40 J small-scale drop-weight machine. The test technique will be described, including unusual test features, such as in situ temperature conditioning. The results of a series of tests performed on sub-size Charpy specimens will be presented, allowing the influence of various test parameters to be evaluated. Comparisons with standard, full-size specimen data will be presented and discussed as well. Finally, the activity of a Working Group on Instrumented Impact Testing of Miniaturized Charpy V-notch Specimens, active within ESIS Technical Committee 5 and chaired by the author, will be briefly described.
residual life evaluation, miniaturized specimens, instrumented impact testing, in situ, temperature conditioning, European Structural Integrity Society
Head of Fracture and Fatigue Laboratory, CISE SpA, MILAN,