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

Yan, Wenyi, Sun, Qingping and Hodgson, Peter D. 2007, A characteristic of spherical indentation curve and its application in measuring material properties, in PRICM6 : Proceedings of the 6th International Conference on Advanced Materials and Processing, Trans Tech Publications, Zurich, Switzerland, pp. 2131-2134, doi: 10.4028/www.scientific.net/MSF.561-565.2131.

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Title A characteristic of spherical indentation curve and its application in measuring material properties
Author(s) Yan, Wenyi
Sun, Qingping
Hodgson, Peter D.
Conference name Advanced Materials and Processing : International Conference (6th : 2007 : Jeju Island, Korea)
Conference location Jeju Island, Korea
Conference dates 05 - 09 Nov. 2007
Title of proceedings PRICM6 : Proceedings of the 6th International Conference on Advanced Materials and Processing
Publication date 2007
Series Advanced Materials Research
Start page 2131
End page 2134
Total pages 4
Publisher Trans Tech Publications
Place of publication Zurich, Switzerland
Keyword(s) spherical indentation
yield stress
transformation stresses
indentation slope curve
Summary 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.
Notes Proceedings in Materials Science Forum
ISBN 0878494626
ISSN 0255-5476
Language eng
DOI 10.4028/www.scientific.net/MSF.561-565.2131
HERDC Research category EN.1 Other conference paper
Copyright notice ©2007, Trans Tech Publications
Persistent URL http://hdl.handle.net/10536/DRO/DU:30098452

Document type: Conference Paper
Collection: Institute for Frontier Materials
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