Weak adhesive junctions in the presence of intermolecular interactions

✍ Scribed by Yves Marciano; Elie Raphaël

• Publisher: Springer Netherlands
• Year: 1994
• Tongue: English
• Weight: 340 KB
• Volume: 67
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00019605

✦ Synopsis

Polymer adhesive has been the subject of many theoretical and experimental studies in the last few years [1]. Certain weak adhesive junctions [2] may be described by a mechanical model where: (i) the opening rate dh/dt vanishes when the stress ~ is below a certain threshold value ~* and (ii) for ~>~*, the opening rate increases with the stress as dh/dt = Q-~(o-o*) where Q is a friction coefficient. This model, called in the literature the Model II, has been explored in detail [3] [4]. Intermolecular interactions, which give rise to the thermodynamic work of adhesive W, have been recently incorporated into this model in the limit of zero crack velocity [5][6]. In this paper we generalise these studies to finite crack velocities. In particular, we calculate the length of the junction L as well as the fracture energy G.