ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 9

Introduction of a New Dynamic Fracture Toughness Evaluation System

Kobayashi, T
Professor, research associate, and associate professor, Toyohashi University of Technology, Toyohashi,

Yamamoto, I
Professor, research associate, and associate professor, Toyohashi University of Technology, Toyohashi,

Niinomi, M
Professor, research associate, and associate professor, Toyohashi University of Technology, Toyohashi,

(Received 20 April 1992; accepted 30 November 1992)

Abstract

Instrumented Charpy impact test has been widely used as a simple method for semi-empirically evaluating material impact toughness. The authors have developed a new instrumented Charpy impact testing system, which is called CAI (Computer Aided instrumented Charpy Impact testing) system. Using the CAI system, dynamic fracture toughness parameters such as Kd, Jd, Tmat, and various absorbed energies can be obtained from the load-deflection curve of a single precracked specimen for both ductile and brittle materials. It has been already put into practical use in Japan. This paper introduces the details of the toughness evaluation procedures in the CAI system.

Keywords:
instrumented Charpy impact test, fracture, fracture toughness, absorbed energy

Paper ID: JTE11763J
DOI: 10.1520/JTE11763J
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