Experimental characterisation and modelling of mechanical behaviour of microcapsules
authors Aniskevich, A; Kulakov, V; Bulderberga, O; Knotek, P; Tedim, J; Maia, F; Leisis, V; Zeleniakiene, D
nationality International
abstract Results of experimental characterisation and modelling of mechanical behaviour of microcapsules for self-sensing polymer composites are presented. Melamine-formaldehyde microcapsules were selected for this purpose. The average diameter, size distribution, and shell thickness of microcapsules were evaluated from scanning electron microscopy images. Compressive properties of the shell material were evaluated in several ways. AFM measurements allowed estimating stiffness and strength of a single microcapsule. In parallel, modelling of the mechanical behaviour of a single microcapsule was performed. Buckling of a thin-walled spherical shell under external pressure was considered and closed-form solution in a linear statement was obtained. The results of analytical calculations were compared with FEM modelling. Two demonstrator thin-shells with the radius of centimetre scale, hollow and filled with water, were tested in compression between two rigid plates. The results of their numerical analysis obtained by FEM models developed are in good agreement with experimental results.
publisher SPRINGER
issn 0022-2461
isbn 1573-4803
year published 2020
volume 55
issue 27
beginning page 13457
ending page 13471
digital object identifier (doi) 10.1007/s10853-020-04925-8
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000541330200002
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