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Liu F, Liu X, Ai W, You S, Wang Y, Yang H, Bai Z, Liu H. Optimization of the pre-tension and separation distance for measurement of the dynamic elastic modulus and macromolecular orientation of a polypropylene monofilament via the sonic velocity method. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:123906. [PMID: 33380007 DOI: 10.1063/5.0006731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
Using a fiber orientation degree measurement instrument (i.e., a dynamic modulus tester), 28 groups of averaged sonic pulse travel times in a polypropylene monofilament were measured and recorded under five pre-tensions across eight separation distances. The zero-time (or delay time) T0, sonic velocity C, sonic modulus E, Hermans orientation factor F, and orientation angle θ were calculated via two- and multi-point methods. The good agreement observed between the scatter plots of calculated data and the regression lines shows that the multi-point method provides reliable, accurate determination of the sonic modulus (or the dynamic elastic modulus) and the orientation parameters. Surprisingly, the zero-time for sonic pulse propagation depends significantly on the separation distance in practice, although it does not in theory. For easy and rapid measurement or relative comparisons using the two-point method, the optimal range of pre-tension is 0.1 gf/den-0.2 gf/den, and the optimal separation distances are 200 mm and 400 mm. The two-point method is appropriate for industrial applications, while because of its greater accuracy, the multi-point method is preferred for scientific research.
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Affiliation(s)
- Fangyi Liu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei 430200, People's Republic of China
| | - Xin Liu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei 430200, People's Republic of China
| | - Wei Ai
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei 430200, People's Republic of China
| | - Song You
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei 430200, People's Republic of China
| | - Yunfei Wang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei 430200, People's Republic of China
| | - Hongjun Yang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei 430200, People's Republic of China
| | - Zikui Bai
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei 430200, People's Republic of China
| | - Hongtao Liu
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, Hubei 430200, People's Republic of China
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THE RELATIONSHIP AMONG TENACITY, PROCESSING AND STRUCTURE OF POLY(PHENYLENE SULFIDE) FIBERS. ACTA POLYM SIN 2012. [DOI: 10.3724/sp.j.1105.2012.11267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Diddens I, Murphy B, Krisch M, Müller M. Anisotropic Elastic Properties of Cellulose Measured Using Inelastic X-ray Scattering. Macromolecules 2008. [DOI: 10.1021/ma801796u] [Citation(s) in RCA: 183] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Imke Diddens
- Institut für Experimentelle and Angewandte Physik, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany, and European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France
| | - Bridget Murphy
- Institut für Experimentelle and Angewandte Physik, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany, and European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France
| | - Michael Krisch
- Institut für Experimentelle and Angewandte Physik, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany, and European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France
| | - Martin Müller
- Institut für Experimentelle and Angewandte Physik, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany, and European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France
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Nitta K, Tanaka A. Evaluation of dynamic density by simultaneous measurement of ultrasonic velocity and elastic modulus under oscillatory deformation. POLYM ENG SCI 1989. [DOI: 10.1002/pen.760291610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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