Round-robin exercise on instrumented impact testing of precracked Charpy specimens (IAEA coordinated research program Phase 8)

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Abstract

Within topic area 2 (Loading Rate Effects) of the IAEA Coordinated Research Project Phase 8 (CRP-8), a round-robin exercise (RRE) was performed. This was aimed at measuring impact fracture toughness in the ductile-to-brittle transition region using precracked Charpy specimens of the JRQ steel tested on instrumented pendulum machines. The objective of the round-robin was twofold: 1) assessing the applicability of the Master Curve approach (ASTM E1921-05) to data obtained at impact loading rates of the order of 105 MPaVm/s; 2) validating a draft test procedure developed by sub-committee TC5 of the European Structural Integrity Society (ESIS), in the absence of an official testing standard (ISO or ASTM). A comprehensive analysis of the RRE results received to date will be presented in this paper, including an assessment of the overall data scatter and the lab-to-lab variability. In this context, an outlier data set has been identified and investigated in great detail. Based on the results presented, it is noted that the test procedure appears reliable and easy to follow for the various participants.

Details

Original languageEnglish
Title of host publicationProceedings of PVP2007 - 2007 ASME Pressure Vessel and Piping Division Conference
Place of PublicationUnited States
Publication statusPublished - 23 Jul 2007
EventPVP2007 - ASME, San Antonio, Texas, United States
Duration: 22 Jul 200726 Jul 2007

Conference

ConferencePVP2007
Country/TerritoryUnited States
CitySan Antonio, Texas
Period2007-07-222007-07-26

Keywords

  • Round-Robin Exercise, IAEA CRP-8, precracked Charpy specimens

ID: 191503