Paper Title:
A Characteristic of Spherical Indentation Curve and its Application in Measuring Material Properties
  Abstract

The spherical indentation obeys Hertz contact theory when the applied load is within the elastic limit. Once the applied load is over the elastic limit, the indentation curve starts to deviate from the original purely elastic indentation curve. This deviation point, which indicates the start of the nonlinear deformation, is an important characteristic of a spherical indentation curve. The indentation force corresponding to the deviation point is related to a basic material constant, which is the yield stress for an elastic-plastic material or the transformation stress for a shape memory alloy. This relationship can be applied to measure the yield stress or the transformation stress from a simple spherical indentation curve. Detailed discussion on the relationship and the method is presented in this short paper.

  Info
Periodical
Materials Science Forum (Volumes 561-565)
Main Theme
Edited by
Young Won Chang, Nack J. Kim and Chong Soo Lee
Pages
2131-2134
DOI
10.4028/www.scientific.net/MSF.561-565.2131
Citation
W. Y. Yan, Q. P. Sun, P. D. Hodgson, "A Characteristic of Spherical Indentation Curve and its Application in Measuring Material Properties", Materials Science Forum, Vols. 561-565, pp. 2131-2134, 2007
Online since
October 2007
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$32.00
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