2134/19365 Xiaonan Hou Xiaonan Hou Memis Acar Memis Acar Vadim Silberschmidt Vadim Silberschmidt Non-uniformity of deformation in low-density thermally point bonded non-woven material: effect of microstructure Loughborough University 2015 untagged Mechanical Engineering not elsewhere classified 2015-11-10 14:39:55 Journal contribution https://repository.lboro.ac.uk/articles/journal_contribution/Non-uniformity_of_deformation_in_low-density_thermally_point_bonded_non-woven_material_effect_of_microstructure/9571685 One of the most important characteristic features of a low-density thermally bonded non-woven material is its discontinuous and non-uniform microstructure, resulting in a complicated and unstable deformation mechanism of the material. In order to estimate the effects of such microstructure on the overall mechanical properties of the non-woven material, tensile tests are carried out for specimens with different systems of marks for both two principle directions—machine direction and cross direction—with images being captured with high-speed camera. The non-uniform strain fields are analysed based on the obtained images. Discontinuous finite-element models are developed to study the deformation mechanism of nonwoven specimens in both principle directions, and the effects of the discontinuous and non-uniform fibrous network and different arrangements of bond points are analysed numerically.