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Twisting knot strength aramid filament, the impact of strong hooks


. 67terdlO00fT, ~ lmorn tensile breaking strength, strong hooks, hooks hold a strong rate and degree of strength and shear strength curve of the ratio of tensile modulus and shear modulus ratio was 5, l7 and 70. For the aramid material, due to its shear strength than the tensile strength, compression strength is much lower, so the test of aramid filament hooks strong and tensile strength and knot strength compared to the also much lower. 3.2 Long Ji hooks on a strong, strong knot to be tied failure analysis Deteresa aramid fibers such as scanning electron micrographs from the literature [5] can be seen in electron micrographs of aramid fibers in the compression side showed signs of wrinkles,MBTシューズ 販売店, and in tensile side is smooth. This knot can easily lead to compression side of the fiber structure of ductile failure: internal structure from the fiber, aramid fiber knot lead after intramolecular amide bond rotation, stretching from the normal trans configuration into cis-configuration, cause the molecular chains showed 45o bend, and spread across the fibril, causing the overall compression ductility knot structure damage. Hooks in the structure, due to poor performance of aramid fiber transverse compression,herve leger skirts, in the strength test in the main 78 China Textile University, Vol 25 for the yarn to the performance of compression damage. 3.2 Aramid filament twisting hooks for strength, knot strength of aramid yarn twisting resulting from tilt, then a strong test for the hook, yarn oblique decomposition of the force along the two directions, one direction of bending. A shearing direction. As the twist increases, the shear is growing,herve leger toronto, due to pull-resistant aramid materials, a special cut of the nature of intolerance, it hooks strong decline with increased twist. For knot strength test. In the end both sides of the state of bending and stretching will also bending failure and shear failure occurs. As the junction geometry, the filament after twisting some part to play in the stretch when transferred to the filament axis, while the yarn regularity improved. Strong increase in the formation of knots. But with the twist increases, the strength of aramid damage, a common result of these two effects is the first aramid knot strength increased and then decreased References 1M]-0pBdh bite SK. H ~ pedo ~ b corner. TextilePr. , 1993,tods shoes outlet,25 (3-4): 5 ~ 162 Xuan Hung Ming. Fang cesium bone lance belt development and performance of materials: [_ Ou's degree thesis:. Shanghai: China's textile and Imperial College, 1995.8 a l03 Yao Lane. Zhou Jinfang, Huang taught Jane. Other textile materials science Beijing: Textile Industry Press, 1988.404 ~ 4O74BI ugly d streamers H. b day Ire] ~ lysmide6filmsUSP · 38694291975-04 a ∞ 5Deter ~ SJ. AUenSR. Fan4s1tjj0urK a 49fihm. JMatSddCccapm ~ iwandIorfioaalI ~ hav-19P ~ 4,19 (1) :57-65nfluenceofTwistonKnotStrengthandHookStrengthofAr amidFilamentsZ. ~ Ng, Bohong-WangShanyuan (IIe pit e0fTextflts.oLI ∞ TextileUmlvendty,vibram five fingers outlet,, 2t ~ 051) AbstractThephenomenathatthehookstrengthdecreasesco ntinuouslyandtheknotstrea ~ gthincreasesatIn, st, andfur-thermoredecreases-~ iththetwislincreaseshavebeenobservedthro ~ ltheknotstrea ~ gthandthehookstrengthexperimentsofthetwistedaramld filaments, AnexplanationisgivenIothephenomenabyanalyzingthesp ecialmicrostructureofar-amid ~ fl ~ erandthedifferenceofforceloadedoonditionetweenakno tandahaok. Keywords: aramidfilament. knotBgtll, hookstrength, twist
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