TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Samri, Manar
A1  - Kossa, Attila
A1  - Hensel, René
T1  - Effect of Subsurface Microstructures on Adhesion of Highly Confined Elastic Films
JF  - Journal of Applied Mechanics
N2  - Polymer adhesive films sandwiched between two rigid solids are a common bonding strategy. The mechanics and consequently the adhesion of such geometrically confined films depend mainly on their thickness, Young's modulus, and the Poisson's ratio of the material. In this work, we explore the effect of a micropatterned subsurface embedded into the adhesive layer. We compare experiments with three-dimensional numerical simulations to evaluate the impact of the microstructure on the contact stiffness and effective modulus. The results are used to extend a previously proposed size scaling argument on adhesion from incompressible to slightly compressible films to account for the silicone used in our study with a Poisson's ratio of 0.495. In addition, interfacial stress distributions between the elastic film and the glass disc are obtained from plane strain simulations to evaluate characteristic adhesion failures such as edge cracks and cavitation. Overall, the micropatterned subsurface has a large impact on the contact stiffness, the interfacial stress distribution, and the detachment behavior; however, the adhesion performance is only slightly improved in comparison to a non-patterned subsurface.
KW  - computational mechanics
KW  - micromechanics
KW  - adhesion
KW  - bioinspiration
Y1  - 2021
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:291:415-1243
U6  - https://doi.org/10.1115/1.4049182
DO  - https://doi.org/10.1115/1.4049182
VL  - 88
IS  - 3
SP  - 031009
ER  -