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Table top experimental setup for electrical contact resistance measurement during indentation

Dutta, S and Vikram, GNVR and Bobji, MS and Mohan, S (2020) Table top experimental setup for electrical contact resistance measurement during indentation. In: Measurement: Journal of the International Measurement Confederation, 152 .

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Official URL: https://doi.org/10.1016/j.measurement.2019.107286


Indentation has become a useful technique for measuring the physical properties of nanomaterials, mechanical stability of beam structures and diaphragms, with the advancement of nanotechnology and MEMS based devices. When combined with electrical contact resistance measuring attachment, indentation tool can provide valuable new insights into contact resistance evolution and material deformation behavior at the nanoscale and obtain other physical properties of the materials. In this work, the design and development of a low-cost tabletop indenter setup with in-situ electrical contact resistance (ECR) measurement attachment is reported. The indenter consists of a piezo electric based positioner and a displacement sensor. A conductive diamond probe attached to the positioner monitors electrical resistance simultaneously. The functionality of the indenter is verified by indenting a porous-alumina-Ni nanocomposite material. It is found that resistance drops with increasing load as area of contact increases. Also, hardness of the composite is calculated from the indentation impression

Item Type: Journal Article
Publication: Measurement: Journal of the International Measurement Confederation
Publisher: Elsevier B.V.
Additional Information: The copyright for this article belongs to the Elsevier B.V.
Keywords: Alumina; Aluminum oxide; Contact resistance; Current voltage characteristics; Electric contacts; Electric variables measurement; Mechanical stability; MEMS; Nanocomposites, Beam structures; Conductive diamonds; Design and Development; Displacement sensor; Electrical contact resistance; Electrical resistances; Material deformation; Piezo electrics, Indentation
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 02 Feb 2023 09:22
Last Modified: 02 Feb 2023 09:22
URI: https://eprints.iisc.ac.in/id/eprint/79748

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