Role of Different Coating Materials and Coating Thickness on Velocity and Displacement Discontinuities in a Tribo-System
Salim Sharieff1, S. Ranganatha2, Shiv Pratap Singh Yadav3, Nadeem Pasha K4
1Salim Sharieff, Research Scholar, Assistant Professor, Department of Mechanical Engineering, HKBK College of Engineering, University, Bengaluru (Karnataka), India.
2Dr. S.Ranganatha, Professor, Department of Mechanical Engineering, University Visvesvaraya College of Engineering, University, Bengaluru (Karnataka), India.
3Shiv Pratap Singh Yadav, Research Scholar, Assistant Professor, Department of Mechanical Engineering, University Nitte Meenakshi Institute of Technology, Bengaluru (Karnataka), India.
4Nadeem Pasha K, Research Scholar, Assistant Professor Department of Mechanical Engineering, University HKBK College of Engineering, Bengaluru (Karnataka), India.
Manuscript received on 07 April 2019 | Revised Manuscript received on 20 April 2019 | Manuscript published on 30 April 2019 | PP: 826-836 | Volume-8 Issue-6, April 2019 | Retrieval Number: F3741048619/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In any tribo-system, same load is transferred between two contacting surfaces. The stress state within one element of contacting surface depends on the mechanical properties of material like young’s modulus. The displacement and velocity were found to exhibit discontinuity. The discontinuity in displacement and velocity were found to be dependent on coefficient of friction. A set of experiments were conducted for understanding this phenomenon of dependency of co-efficient of friction and discontinuities in displacement and velocity using pin-on-disc test rig. For obtaining different set in displacement and velocity discontinuities coatings of enamel, zinc, aluminium and molybdenum coatings were coated on mild steel pin. Coating thickness were 100 microns 200 microns and 300 microns for each coating materials. Pin-on-disc test were carried off with a normal load of 30 newton and speed of 500 rpm. Scanning electron micrographic study were carried out on wornout surfaces. In general, the coefficient of friction was found to increase with increase in coating thickness for all coating materials i.e. enamel, zinc, aluminium and molybdenum. The results indicated that the extent of damages on wornout coatings which depends on existing discontinuous in displacement and velocities across sliding pair were found to depend on observed coefficient of friction.
Keyword: Coating Damages, Displacement Discontinuity, Extrusion, Velocity Discontinuity.
Scope of the Article: Materials Engineering