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Contact Angle and Contact Mechanics of a Glass/Epoxy Interface

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Abstract

An attempt was made to extract the thermodynamic work of adhesion from contact angle measurements and contact mechanics in order to compare it with interfacial toughness values of a glass/epoxy interface. The three probe liquid method, in conjunction with laser goniometry, yielded a value of the work of adhesion of 93 mJ/m2. This was an order of magnitude less than the value extracted from the Maugis solution for contacting spheres with surface interactions. These work of adhesion values were both lower than the 1.5 J/m2 which was determined in a parallel study of interfacial fracture as a mode-mix independent component of the overall interfacial toughness. Some of the reasons for these differences are explored.

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Authors and Affiliations

  1. Research Center: Mechanics of Solids, Structures & Materials, Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, Texas, 78712-1085, USA

    K.M. Liechti, S.T. Schnapp & J.G. Swadener

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  1. K.M. Liechti
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  2. S.T. Schnapp
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  3. J.G. Swadener
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Liechti, K., Schnapp, S. & Swadener, J. Contact Angle and Contact Mechanics of a Glass/Epoxy Interface. International Journal of Fracture 86, 361–374 (1997). https://doi.org/10.1023/A:1007472628431

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