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RESEARCH PAPERS

A Strain Gage Analysis of Fracture in Wide Plate Tests of Reactor Grade Steel

[+] Author and Article Information
J. R. Berger

Materials Reliability Division, National Institute of Standards and Technology, Boulder, CO 80303

J. W. Dally

Department of Mechanical Engineering, University of Maryland, College Park, MD 20742

R. deWit, R. J. Fields

Metallurgy Division, National Institute of Standards and Technology, Gaithersburg, MD 20899

J. Pressure Vessel Technol 115(4), 398-405 (Nov 01, 1993) (8 pages) doi:10.1115/1.2929547 History: Received October 02, 1990; Revised June 22, 1993; Online June 17, 2008

Abstract

A new method of fracture analysis is described. Strains recorded by gages in the immediate vicinity of a propagating crack are analyzed. From the analysis, crack tip position, propagation toughness, and crack velocity are determined. The analysis procedure Is demonstrated using data from the dynamic fracturing of a large-scale, wide plate test. The results are then used to describe the propagation toughness-crack velocity-temperature relation for the 2.25 Cr-1 Mo steel used in the test.

Copyright © 1993 by The American Society of Mechanical Engineers
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