ON MEASUREMENT AND VALIDITY OF ELASTIC-PLASTIC FRACTURE TOUGHNESS PARAMETERS BY INSTRUMENTED CHARPY IMPACT TEST.

T. Kobayashi, I. Yamamoto, M. Niinomi

Research output: Contribution to conferencePaperpeer-review

2 Citations (Scopus)

Abstract

The test material was ASTM A533 Grade B Steel for reactor pressure Toyohashi University of Technology, Toyohashi 440 Japan vessels. High tensile strength (80kgf/mm**2 class) steel HT80, mild steel (40kgf/mm**2 class) SS41 and aluminum alloys (7075 and 2017) were also used in various heat treated conditions. Dynamic fracture toughness characteristics for crack initiation and crack propagation were estimated using a pre-cracked Charpy type specimen and an instrumented Charpy test. An energy application larger than 3-fold of the absorbed energy is a necessary condition for accurately recording the load deflection curve. Utilization of side grooves will make it possible to obtain a valid J//I//d value with standard Charpy tests.

Original languageEnglish
Pages75-79
Number of pages5
Publication statusPublished - 1986 Dec 1

ASJC Scopus subject areas

  • Engineering(all)

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