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Abstract
This paper presents the results of unidirectional strain-controlled experiments on fibrous electrospun networks used to study damage formation during elongation. The experimental loading curve shows a symmetrical parabolic type dependence at large scale and saw tooth-like force−extension behaviour at small scale. The damage formation was quantified by determining the number and the magnitude of abrupt force drops. The experiments evidenced that damage evolution is a consequence of strain induced random events. The frequency distribution of the number of damages as well as the magnitude of rupture force were represented by histograms. The results of the present study provide a better insight into damage tolerance and complex nonlinear tensile properties of electrospun networks. In addition, it could suggest a possible probabilistic approach to the fiber bundle model which has mainly motivated this study.
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Details
1 Semmelweis University, Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Nagyvárad tér 4, Hungary (GRID:grid.11804.3c) (ISNI:0000 0001 0942 9821)
2 Energy and Environmental Area, Japan Advanced Institute of Science and Technology, Ishikawa, Japan (GRID:grid.444515.5) (ISNI:0000 0004 1762 2236)
3 Semmelweis University, Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Nagyvárad tér 4, Hungary (GRID:grid.11804.3c) (ISNI:0000 0001 0942 9821); Energy and Environmental Area, Japan Advanced Institute of Science and Technology, Ishikawa, Japan (GRID:grid.444515.5) (ISNI:0000 0004 1762 2236)