SEDL / STP / STP1418-EB / STP10816S

Evaluation of Standard Charpy Impact Properties with Subsized Specimens

Yamamoto, T
Assist, professorEngineering Specialist, Inst. Material Research, Tohoku UniversityUniversity of California, IbarakiSanta Barbara, CA

Yabuki, K
Graduate student and professor, Inst. Material Research, Tohoku University, Sendai,

Matsui, H
Graduate student and professor, Inst. Material Research, Tohoku University, Sendai,

Odette, GR
Professors, University of California, Santa Barbara, CA

Lucas, GE
Professors, University of California, Santa Barbara, CA

Pages: 14    Published: Jan 2002

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Abstract

Evaluation methodology of standard Charpy impact properties in the cleavage fracture region from subsized specimen test results has been demonstrated. It consists of 1) subsized Charpy V-notch impact tests; 2) tensile tests at various temperatures and strain rates; and 3) three dimensional finite element method (FEM) simulations of the impact test with a temperature and strain rate dependent constitutive equation and a cleavage fracture model that is based on a stress-critical area criteria. The standard impact properties of a ferritic/martensitic steel (JFMS) in the cleavage facture region have been evaluated, and there was reasonable agreement between simulations and experimental results.