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Experimental Mechanics

, Volume 38, Issue 1, pp 13–17 | Cite as

Quantitative metallographic study for evaluation of fracture strain

  • M. Ohashi
Article

Abstract

A new method was developed for estimating fracture strain by measuring the aspect ratio of the ferrite grains. The method provides an appropriate estimate of the fracture strain of a notched specimen with different notch acuity. The average aspect ratio immediately underneath the fracture surface was used to deduce the fracture strain by means of the calibration curve established from a metallographic examination on the unnotched specimen. The estimated fracture strains were found to be in reasonably good agreement with the measured values within a margin of error of 10 percent. As such, it can be said that the method presented here could be a useful technique for providing an appropriate estimate of the fracture strain of a mechanical component.

Keywords

Ferrite Mechanical Engineer Aspect Ratio Calibration Curve Fracture Surface 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Society for Experimental Mechanics, Inc. 1998

Authors and Affiliations

  • M. Ohashi
    • 1
  1. 1.National Research Institute of Police ScienceTokyoJapan

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