Cohesive failure of thin layers of soft model adhesives under tension

Autor:	Daniel Bonn, Didi Derks, Costantino Creton, Anke Lindner
Rok vydání:	2003
Předmět:	Physics::Fluid Dynamics Work (thermodynamics) Thin layers Materials science Tension (physics) General Physics and Astronomy Mechanics Adhesive Adhesion Reduction (mathematics) Non-Newtonian fluid Viscoelasticity Quantitative Biology::Cell Behavior
Zdroj:	Journal of Applied Physics. 93:1557-1566
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1533095
Popis:	The cohesive failure of soft adhesives is studied using a yield stress fluid as a model adhesive, which allow to relate the viscoelastic properties of the fluid directly to its adhesive performance. We derive a theoretical expression for the force—distance curve as a function of the yield stress, which describes our experimental results very well. The theoretical prediction is obtained by assuming a circular air—adhesive interface; surprisingly, good agreement between theory and experiment is also obtained when strong fingering instabilities are observed in the experiment. This result is confirmed by the fact that we do not find a significant reduction in the work of adhesion when fingering instabilities are present. In addition, we discuss the morphology of the fingering instabilities.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9d9338b11ad6804cb0cfdbceead1ee73 https://doi.org/10.1063/1.1533095 Zobrazit plný text záznamu