Agricultural Engineering, Volume 49 (2017)


Kussay Ahmed Subhi, A. Tudor, E. Hussein, H. Wahad, G. Chisiu, A. V. Radulescu
AL-FURAT AL-AWSAT Technical University, Iraq; Polytechnic University of Bucharest; AL-FURAT AL-AWSAT Technical University; Polytechnic University of Bucharest


Abstract: In this current study, a twist static frictional behavior was experimentally studied by using different shapes of an indenter tip (circular, square, and triangular cross sectional area) all are made from brass and applied load (1 and 2 N). The creep area and the static coefficient of friction between cow skin and tips were recorded at times (1, 2, 3, and 4 minutes). The gained experimental results showed that the creep area and the coefficient of friction of cow skin increased as the time increased for both applied loads. The circular shape has maximum creep area while the twist static coefficient of friction was minimum compared to that produced by the others shapes.

Keyword(s): Twist static friction, cow skin, creep area, endoprosthesis support


. C.Pailler-Mattei and H.Zahouani. Analysis of adhesive behavior of human skin in vivo by an indentation test. Tribology International, 39, 2006, p.12-21.

. M.Zhang and A.Mak. In vivo friction properties of human skin. Prosthetics and Orthotics International, 23, 1999, p.135-141.

. M.Morales Hurtado, M.Peppelman, X.Zeng, P.E.J.Van Erp, E.Van Der Heide. Tribological behavior of skin equivalents and ex-vivo human skin against the material components of artificial turf in sliding contact. Tribology International, 102, 2016, p.103–113.

. L.Cheng, X.Xia, W.Yu, L.E.Scriven, W.W.Gerbrich, Flat-Punch Indentation of Viscoelastic Material, Journal of Polymer Science: Part B: Polymer Physics, 38, 2000, p.10–22.

. K.Subhi, A.Tudor, E.Hussein, H.Wahad, The adhesion and hysteresis effect in friction skin with artificial materials, IOP Conf. : Materials Science and Engineering, 174 (1), IOP Publishing, 2017, 012018.

. A.Tudor, M.Vlase, N.Cerbu H.Wahad, K.A.S.Ahmed, Effect of Friction on Transmisibity in Coulombian Damper, Bulletin of the Transilvania University of Brasov, Series I: Engineering Sciences, 9 (58) No. 2, 2016, p.287-294.

. K.A.Subhi, A.Tudor, E.K.Hussein, Ex-Vivo Tribological Behavior of Cow Skin, American Scientific Research Journal for Engineering, Technology, and Sciences (ASRJETS), 34 (1), 2017, p.54-61.

W.Li, Q.Pang a, M.Lub, Y.Liuc, Z.R.Zhou, Rehabilitation and adaptation of lower limb skin to friction trauma during friction contact, Wear, 332-333, 2015 ,p.725–733.

S.Derler, G.M.Rotaru, Stick-slip phenomena in the friction of human skin, Wear 301, 2013, p.324-329.

J.V.Kuilenburg, M.A.Masen, M.N.W.Groenendijik, V.Bona, E.V.Heide, An experimental study on the relation between surface texture and tactile friction, Tribology Intenational 46, 2012, p.15-21.

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Agricultural Engineering ISSN 1392-1134 / eISSN 2345-0371

This journal is published under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License. Responsible editor: Dr A. Žunda.