The proposition of analytical expression HM–(√P/S) in microindentation pile-up deformation mode

Authors

  • Samir Habibi Laboratory of Industrial Engineering and Sustainable Development (LGIDD, Department of Mechanical Engineering, Ahmed Zabana University of Relizane, 48000, Algeria.
  • Djamel Zddine Semsoum LGIDD, Department of Mechanical Engineering, Mustapha Stambouli University of Mascara, 29000, Algeria.
  • Soufiane Benaissa  LGIDD, Department of Mechanical Engineering, Mustapha Stambouli University of Mascara, 29000, Algeria.
  • Hassen Merzouk LGIDD, Department of Mechanical Engineering, Mustapha Stambouli University of Mascara, 29000, Algeria.

DOI:

https://doi.org/10.3221/IGF-ESIS.60.28

Keywords:

Microindentation, Martens hardness, Pile-up, Empirical, Cu99

Abstract

In this article, the characteristic curves of microindentation measured on Cu99 were analyzed on the basis of the analytical expression proposed by Habibi et al. (J. Mater. Res, 2021, 36 (15): 3074-3085). It was found that the ratio of the applied load to the square of the displacement, P/(h+h0)2, does not remain constant during the loading segment of the microindentation test. An empirical expression for the determination of Martens hardness as a function of indentation load, contact stiffness and reduced modulus of elasticity by analyzing indentation load curves has been proposed for pile-up mode strain with the corrections imposed by the tip defect, the compliance of the instrument and the axial axisymmetry coefficient of the Vickers indenter. The results from microindentation tests on this examined ductile material show excellent agreement.

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Author Biographies

  • Samir Habibi, Laboratory of Industrial Engineering and Sustainable Development (LGIDD, Department of Mechanical Engineering, Ahmed Zabana University of Relizane, 48000, Algeria.

    Laboratory of Industrial Engineering and Sustainable Development (LGIDD,

    Department of Mechanical Engineering,

    Ahmed Zabana University of Relizane, 48000, Algeria.

    Corresponding author: habibismr@yahoo.com

  • Djamel Zddine Semsoum , LGIDD, Department of Mechanical Engineering, Mustapha Stambouli University of Mascara, 29000, Algeria.

    LGIDD, Department of Mechanical Engineering,

    Mustapha Stambouli University of Mascara, 29000, Algeria.

     

     

  • Soufiane Benaissa , LGIDD, Department of Mechanical Engineering, Mustapha Stambouli University of Mascara, 29000, Algeria.

     

    LGIDD, Department of Mechanical Engineering,

    Mustapha Stambouli University of Mascara, 29000, Algeria.

     

  • Hassen Merzouk , LGIDD, Department of Mechanical Engineering, Mustapha Stambouli University of Mascara, 29000, Algeria.

     

    LGIDD, Department of Mechanical Engineering,

    Mustapha Stambouli University of Mascara, 29000, Algeria.

     

Published

25-03-2022

How to Cite

The proposition of analytical expression HM–(√P/S) in microindentation pile-up deformation mode. (2022). Frattura Ed Integrità Strutturale, 16(60), 407-415. https://doi.org/10.3221/IGF-ESIS.60.28