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http://hdl.handle.net/10397/74297
Title: | Tensile and deformation behavior of auxetic plied yarns | Authors: | Ng, WS Hu, H |
Issue Date: | Dec-2017 | Source: | Physica status solidi. B, Basic research, Dec. 2017, v. 254, no. 12, p. 1600790 | Abstract: | This paper presents an experimental study of tensile and deformation behavior of an auxetic plied yarn structure. The basic configuration of the plied structure formed with two soft yarns and two stiff yarns was firstly introduced. Based on this 4-ply helix structure, six kinds of yarn samples were made by different combinations of soft yarns, stiff yarns and twist levels. These yarn samples were first tested and the effects of different design parameters were analyzed. Apart from the tensile test, changes in the internal structure of two samples upon stretching were also studied through microscopic examination. Finally, double helix yarn and 6-ply auxetic yarn were made for a comparative purpose to investigate the effect of helical structure. The study shows that all of the 4-ply auxetic yarn samples exhibit negative Poisson's ratio (NPR) throughout the entire tensile process, and the magnitude of NPR gets larger with a smaller soft yarn diameter, a higher tensile modulus of stiff yarn and a lower twist level. The study also shows that auxetic behavior inside the 4-ply structure is generated by the interplay between the soft yarns and stiff yarns and 4-ply auxetic yarns have the advantages to produce immediate auxetic effect upon stretching. | Keywords: | Auxetics Deformation Poisson's ratio Textiles Yarns |
Publisher: | Wiley-VCH | Journal: | Physica status solidi. B, Basic research | ISSN: | 0370-1972 | EISSN: | 1521-3951 | DOI: | 10.1002/pssb.201600790 | Rights: | © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim This is the peer reviewed version of the following article: Ng, W. S., & Hu, H. (2017). Tensile and deformation behavior of auxetic plied yarns. physica status solidi (b), 254(12), 1600790, which has been published in final form at https://doi.org/10.1002/pssb.201600790. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. |
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Hu_Tensile_Deformation_Behavior.pdf | Pre-Published version | 1.6 MB | Adobe PDF | View/Open |
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