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Experimental simulation of bending damage of silicon nitride yarn during 3D orthogonal fabric forming process
Journal of Industrial Textiles ( IF 3.2 ) Pub Date : 2021-04-17 , DOI: 10.1177/15280837211010681
Ning Wu 1 , Shuai Li 1 , Meiyue Han 1 , Chao Zhu 1 , Yanan Jiao 1 , Li Chen 1
Affiliation  

The aim of this study executed on Silicon Nitride (Si3N4) yarn is to examine some bending damage behaviors and fracture mechanisms that occur during the 3D orthogonal fabric forming process. A three point bending experiment device has been developed in order to simulate the Z-binder yarn bending condition. The effects of weft density, fabric thickness, and yarn tension have been studied. The Weibull analysis of the tensile strength show that the bending damage increases with the increase of weft density, fabric thickness, and yarn tension. The resulting bending damage causes a reduction in yarn strength of between 2.5 and 17.2% depending on the bending parameters of yarn. The growth of the fibrillation area also reflects similar trends with tensile strength loss rate. The fibrillation length produced by the yarns is mostly distributed within the range of 0.3 to 0.9 mm. A comparison of the calculation result to experimental data shows the bending fracture probability of filaments inside yarn are less than that of monofilament. The tensile and bending fracture of Si3N4 filaments exhibit typical brittle fracture characteristics.



中文翻译:

氮化硅纱线在3D正交织物成形过程中弯曲损伤的实验模拟

本研究的目的是在氮化硅(Si 3 N 4)纱线用于检查在3D正交织物成形过程中发生的一些弯曲破坏行为和断裂机理。为了模拟Z-结纱的弯曲状态,已经开发了三点弯曲实验装置。研究了纬纱密度,织物厚度和纱线张力的影响。Weibull抗拉强度分析表明,弯曲损伤随纬密度,织物厚度和纱线张力的增加而增加。所产生的弯曲损伤会导致纱线强度降低2.5%至17.2%,具体取决于纱线的弯曲参数。原纤化区域的增长也反映出抗张强度损失率的相似趋势。由纱线产生的原纤化长度大部分分布在0.3至0.9mm的范围内。计算结果与实验数据的比较表明,纱线内部细丝的弯曲断裂几率小于单丝。硅的拉伸弯曲断裂3 N 4长丝表现出典型的脆性断裂特性。

更新日期:2021-04-18
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