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Peer Review Karya Ilmiah (Prosiding ) : Numerical Modeling of Spherical Indentation and Hardness Prediction.

Ir. I Nyoman Budiarsa, M.T., Ph.D., I NYOMAN BUDIARSA (2013) Peer Review Karya Ilmiah (Prosiding ) : Numerical Modeling of Spherical Indentation and Hardness Prediction. Prosiding, 1. ISSN -

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Abstract

Under an indentation, the material undergoes a complex deformation. One of the most effective ways to analyse indentation has been the representative method.The concept coupled with finite element (FE) modelling has been used successfully in analysing sharp indenters. It is of great importance to extend this method to spherical indentation and associated hardness system. One particular case is the Rockwell B test, where the hardness is determined by two points on the P-h curve of a spherical indenter. In this case, an established link between materials parameters and P-h curves can naturally lead to direct hardness estimation from the materials parameters (e.g. yield stress and work hardening coefficients). This could provide a useful tool for both research and industrial applications.In this work, FE model of spherical indentation has been developed and validated. An approach to predict the P-h curves from constitutive material properties has been developed and evaluated.An effective method in representing the P-h curves using a normalized representative stress concept was established. The concept and methodology developed is used to predict hardness (HRB) values of materials through direct analysis and validated with experimental data on selected samples of steel.

Item Type: Article
Uncontrolled Keywords: Spherical Indentation, FEM Spherical indentation, HRB, Representative stress, P-h curve
Subjects: L Education > L Education (General)
Divisions: Faculty of Law, Arts and Social Sciences > School of Education
Depositing User: Mr. Repository Admin
Date Deposited: 07 Jun 2016 21:58
Last Modified: 21 Jun 2016 05:58
URI: http://erepo.unud.ac.id/id/eprint/6642

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