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A characteristic of spherical indentation curve and its application in measuring material properties

conference contribution
posted on 2007-12-01, 00:00 authored by W Yan, Q Sun, Peter HodgsonPeter Hodgson
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.

History

Volume

561-565

Pagination

2131-2134

Location

Jeju Island, Korea

Start date

2007-11-05

End date

2007-11-09

ISSN

0255-5476

ISBN-10

0878494626

Language

eng

Notes

Proceedings in Materials Science Forum

Publication classification

EN.1 Other conference paper

Copyright notice

2007, Trans Tech Publications

Title of proceedings

PRICM6 : Proceedings of the 6th International Conference on Advanced Materials and Processing

Event

Advanced Materials and Processing : International Conference (6th : 2007 : Jeju Island, Korea)

Issue

PART 3

Publisher

Trans Tech Publications

Place of publication

Zurich, Switzerland

Series

Advanced Materials Research

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