The Effects of Roughness on Adhesion Hysteresis

• Published in: Journal of adhesion science and technology Vol. 24; no. 6; pp. 1045 - 1054
• Main Authors: Wei, Zheng, He, Meng-Fu, Zhao, Ya-Pu
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis Group 01.01.2010; Taylor & Francis
• Subjects: ADHESION HYSTERESIS; ADHESION PARAMETER; Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; Mechanical and acoustical properties; adhesion; Physics; Solid surfaces and solid-solid interfaces; SURFACE ROUGHNESS; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); adhesion parameter; Digital simulation; Roughness; Theoretical study; Surface properties; Modelling; Solid-solid interfaces; Surface topography; Adhesion hysteresis; Adhesion; Hysteresis; surface roughness
• ISSN: 0169-4243; 1568-5616
• DOI: 10.1163/016942409X12584625925222

Adhesion hysteresis is defined as the difference between the work needed to separate two surfaces and that originally gained on bringing them together. Adhesion hysteresis is a common phenomenon in most surface/interface interactions. This paper studies the effects of surface roughness on adhesion hysteresis. We assumed that the surface asperity height distribution is Gaussian. Numerical simulations based on Fuller's model showed that adhesion hysteresis depended upon a single dimensionless parameter, the adhesion parameter, which represents the statistical average of a competition between the compressive forces exerted by the higher asperities, which are trying to separate the surfaces, and the adhesion forces of the lower asperities which are trying to hold the surfaces together.