Procedure to Estimate the Crack Resistance Curve from the Instrumented Charpy V–Notched Impact Test

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Abstract

Recently, a simple procedure based on the relationship between crack length and absorbed energy was provided to determine the crack length from the load– displacement test record. This procedure was validated on a large number of materials using various cracked geometries. The main objective of this paper is to investigate the possibility to apply a similar procedure to a V–notched geometry, namely the Charpy specimen. Such an evaluation would lead to estimate the material crack resistance from a single Charpy V–notched impact test. By performing a number of well–selected experiments, we demonstrated that such a correlation exists, allowing the determination of both static as well as dynamic (impact) crack resistance from the simple instrumented Charpy impact test with a reasonable accuracy.

Details

Original languageEnglish
Title of host publicationavaliable only on CD
Place of PublicationOttawa, Canada
Publication statusPublished - 15 Jul 2009
Event12th International Conference on Fracture - Natural Resources Canada - CANMET Materials Technology Laboratory (NRCan-CANMET) and the National Research Council of Canada (NRC), Ottawa, Canada
Duration: 13 Jul 200917 Jul 2009

Conference

Conference12th International Conference on Fracture
CountryCanada
CityOttawa
Period2009-07-132009-07-17

Keywords

  • ductile fracture, crack resistance, Charpy V–notched, quasi–static loading, dynamic loading

ID: 206290