Impact Tensile Behaviors of PVDF Building Coated Fabrics

Zheng, Lianqiong; Ye, Yilong; Zhuang, Jinping; Zheng, Yanying

doi:10.1155/2020/1620760

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…Generally, the design of civil engineering focuses on the prediction of the damage of coated fabrics caused by the ultimate tension. 28 However, the gas-sealing of coated fabrics also needs to be considered in the design of inflatable structures. Tiny gaps will appear in the coating under the condition of large deformation, resulting in gas leakage.…”

Section: Mechanism Analysis Of Mechanical Model Of Coated Fabricsmentioning

confidence: 99%

A high efficient constitutive model of coated plain-weave fabrics under uniaxial tensile loads in arbitrary directions

Sun

Zhang

2022

Journal of Industrial Textiles

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The complex mechanical properties of coated fabrics make it difficult to obtain accurate constants for design and analysis. A high efficient constitutive model of coated plain-weave fabrics is proposed to realize the prediction of mechanical behaviours in arbitrary directions. The coupling mechanism between macro and meso deformation of coated fabrics is analyzed firstly, and the constitutive relation of the model is established based on mesoscopic parameters with clear physical interpretation. Then, the material property values of specimens are obtained by using a multi-objective optimization algorithm according to the experimental data. Unlike the previous constitutive relations which need to use finite element methods to get numerical solutions, the constitutive relation established in this paper can be mapped to a quartic equation with analytical solution, and the calculation efficiency can be greatly improved. The deviations of model predictions with experimental results, e. g., 0.052 (tension), 0.009 (width), 0.014 (length, warp), 0.025 (length, weft), 0.027 (angle, warp), 0.030 (angle, weft), show that the model predictions are in good agreement with the experimental data.

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Section: Mechanism Analysis Of Mechanical Model Of Coated Fabricsmentioning

confidence: 99%

A high efficient constitutive model of coated plain-weave fabrics under uniaxial tensile loads in arbitrary directions

Sun

Zhang

2022

Journal of Industrial Textiles

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“…PVDF has the characteristics of good flexibility, high mechanical strength, high natural frequency, high chemical resistance, and can be processed into complex shapes. These advantages are deficient by other piezoelectric materials including single crystal, ceramic materials, opening a new field for the application of piezoelectric materials and making it a new type of promoted intelligent sensors, such as strain or pressure measurement under explosive impacts [3][4][5][6][7], tactile sensors [8][9][10][11][12][13], microphone, and vibration fields [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Characterizing piezoelectric properties of PVDF film under extreme loadings

Yu,

Li,

Xie

et al. 2023

Smart Mater. Struct.

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Polyvinylidene fluoride (PVDF) as a polymer has been proven to be an effective piezoelectric sensor with advantages of good flexibility, high mechanical strength, and high chemical resistance. Numerous studies have focused on the response of PVDF film at high strain rates, but few on low strain rate response, and the response of PVDF film at different strain rates is unknown. To address these limitations, we examine the piezoelectric properties of PVDF film at extreme high and low loading rates. We design quasi-static compression and dynamic split Hopkinson pressure bar (SHPB) test setups to examine the response of PVDF film. Quasi-static compression test results show that PVDF films have good repeatability and linearity. The charge shift phenomenon is observed at quasi-static loading conditions, and the charge shift rate is found to be related to the gain coefficient of charge amplifier. Next, SHPB tests are performed and results show that PVDF film can well capture the propagation of stress wave. Moreover, it is observed that the PVDF film under high loading rate has a higher failure strength in comparison to that of low loading rate. Finally, based on the measured points by quasi-static compression and SHPB tests, the piezoelectric coefficients of PVDF film under extreme low (on the scale of strain rate of 10−2 s−1) and extreme high (on the scale of strain rate 105 s−1) loading rates are found to be 30.79 pC/N and 27.72 pC/N, respectively. Note that, the strain rate difference is seven orders of magnitude, the piezoelectric coefficient difference is only 9.97%. We believe our findings can advance the design and application of PVDF films in practical engineering.

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“…The literature concerning the subject of coated woven fabrics is very extensive. Every year new investigations are performed on comprehensive studies on the coated woven fabrics [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. Performed investigations have shown that the mechanical parameters of the coated woven fabrics are highly influenced by temperature changes [26,27].…”

Section: Introductionmentioning

confidence: 99%

Influence of cyclic frozen and defrost on mechanical properties of polytetrafluoroethylene (PTFE)-coated woven fabrics

2023

Archives of Civil Engineering

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This research aims to determine the influence of the cyclic process of freezing and defrosting on the mechanical properties of the chosen glass fibres and PTFE-coated woven fabrics. The specimens were subjected to freezing at about −20 • C for 4 h and thawing by full immersion into the water at about +20 • C for 4 h. The fabric samples after 25 and 50 frozen cycles were air-dried at room temperature for one week and then subjected to uniaxial tensile tests. The same tests have been performed on a reference group of specimens, which were not exposed to temperature change. The authors determined the tensile strength, and longitudinal stiffnesses resulting from performed tests. Although the investigated coated woven fabrics expressed a reduction in the tensile strength in water soaking conditions, the performed frozen cycles don't show a significant decrease in strength under uniaxial tensile tests.

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Impact Tensile Behaviors of PVDF Building Coated Fabrics

Cited by 5 publications

References 27 publications

A high efficient constitutive model of coated plain-weave fabrics under uniaxial tensile loads in arbitrary directions

A high efficient constitutive model of coated plain-weave fabrics under uniaxial tensile loads in arbitrary directions

Characterizing piezoelectric properties of PVDF film under extreme loadings

Influence of cyclic frozen and defrost on mechanical properties of polytetrafluoroethylene (PTFE)-coated woven fabrics

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