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Non-uniformity of deformation in low-density thermally point bonded non-woven material: effect of microstructure

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Abstract

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 non-woven 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.

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Acknowledgements

We greatly acknowledge the support by the Nonwovens Cooperative Research Center of North Carolina State University, Raleigh, USA.

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Authors and Affiliations

  1. Wolfson School of Mechanical and Manufacturing Engineering, Loughborough University, Leicestershire, LE11 3TU, UK

    Xiaonan Hou, Memiş Acar & Vadim V. Silberschmidt

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  1. Xiaonan Hou
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  2. Memiş Acar
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  3. Vadim V. Silberschmidt
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Correspondence to Vadim V. Silberschmidt.

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Hou, X., Acar, M. & Silberschmidt, V.V. Non-uniformity of deformation in low-density thermally point bonded non-woven material: effect of microstructure. J Mater Sci 46, 307–315 (2011). https://doi.org/10.1007/s10853-010-4800-1

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  • DOI: https://doi.org/10.1007/s10853-010-4800-1

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