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60 years ago, in 1958, Ernest Rabinowicz published a 5 page paper titled “The effect of size on the looseness of wear fragments” where he suggested a criterion determining the minimum size of wear particles. The criterion of Rabinowicz is based on the consideration of the interplay of elastic energy stored in “asperities” and the work of separation needed for detaching a wear particle. He was probably the first researcher who explicitly emphasized the role of adhesion in friction and wear. In a recent paper in Nature Communications, Aghababaei, Warner and Molinari confirmed the criterion of Rabinowicz by means of quasi-molecular dynamics and illustrated the exact mechanism of the transition from plastic smoothing to formation of wear debris. This latter paper promoted the criterion of Rabinowicz to a new paradigm for current studies of adhesive wear. The size arguments of Rabinowicz can be applied in the same form also to many other problems, such as brittle-ductile transition during indentation, cutting of materials or ultimate strength of nano-composites.


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60 years of Rabinowicz’ criterion for adhesive wear

Show Author's information Elena POPOVA1( )Valentin L. POPOV1( )Dae-Eun KIM2,3
 Institute of Mechanics, Technische Universität Berlin, Berlin 10623, Germany
 School of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
 Center for Nano-Wear, Yonsei University, Seoul 03722, Republic of Korea

Abstract

60 years ago, in 1958, Ernest Rabinowicz published a 5 page paper titled “The effect of size on the looseness of wear fragments” where he suggested a criterion determining the minimum size of wear particles. The criterion of Rabinowicz is based on the consideration of the interplay of elastic energy stored in “asperities” and the work of separation needed for detaching a wear particle. He was probably the first researcher who explicitly emphasized the role of adhesion in friction and wear. In a recent paper in Nature Communications, Aghababaei, Warner and Molinari confirmed the criterion of Rabinowicz by means of quasi-molecular dynamics and illustrated the exact mechanism of the transition from plastic smoothing to formation of wear debris. This latter paper promoted the criterion of Rabinowicz to a new paradigm for current studies of adhesive wear. The size arguments of Rabinowicz can be applied in the same form also to many other problems, such as brittle-ductile transition during indentation, cutting of materials or ultimate strength of nano-composites.

Keywords: wear, adhesion, plasticity, Archard’s law of wear, Rabinowicz criterion, surface topography, history of Tribology

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Publication history

Received: 21 June 2018
Revised: 04 August 2018
Accepted: 06 August 2018
Published: 20 August 2018
Issue date: September 2018

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© The author(s) 2018

Acknowledgements

The authors thank Judith Raymond née Rabinowicz for providing a photo of Ernest Rabinowicz working in his lab.

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