Dynamic Mechanical Properties of Several High-Performance Single Fibers

doi:10.3390/ma14133574

	Dynamic Mechanical Properties of Several High-Performance Single Fibers
	Lei, Xudong 2,3; Xiao, Kailu 2,3; Wu, Xianqian 2; Huang, Chenguang 1,3
刊名	MATERIALS
	2021-07-01
卷号	14
关键词	single fiber mini-SHTB SEM Weibull distribution
DOI	10.3390/ma14133574
通讯作者	Wu, Xianqian(wuxianqian@imech.ac.cn)
英文摘要	High-performance fiber-reinforced composites (FRCs) are widely used in bulletproof structures, in which the mechanical properties of the single fibers play a crucial role in ballistic resistance. In this paper, the quasi-static and dynamic mechanical properties of three commonly used fibers, single aramid III, polyimide (PI), and poly-p-phenylenebenzobisoxazole (PBO) fibers are measured by a small-scale tensile testing machine and mini-split Hopkinson tension bar (mini-SHTB), respectively. The results show that the PBO fiber is superior to the other two fibers in terms of strength and elongation. Both the PBO and aramid III fibers exhibit an obvious strain-rate strengthening effect, while the tensile strength of the PI fiber increases initially, then decreases with the increase in strain rate. In addition, the PBO and aramid III fibers show ductile-to-brittle transition with increasing strain rate, and the PI fiber possesses plasticity in the employed strain rate range. Under a high strain rate, a noticeable radial splitting and fibrillation is observed for the PBO fiber, which can explain the strain-rate strengthening effect. Moreover, the large dispersion of the strength at the same strain rate is observed for all the single fibers, and it increases with increasing strain rate, which can be ascribed to the defects in the fibers. Considering the effect of strain rate, only the PBO fiber follows the Weibull distribution, suggesting that the hypothesis of Weibull distribution for single fibers needs to be revisited.
资助项目	National Natural Science Foundation of China[11672315] ; National Natural Science Foundation of China[11772347] ; Science Challenge Project[TZ2018001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB22040302] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB22040303]
WOS关键词	STRAIN-RATE ; BEHAVIOR ; COMPOSITE
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000671194800001
资助机构	National Natural Science Foundation of China ; Science Challenge Project ; Strategic Priority Research Program of Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123424]
专题	中国科学院合肥物质科学研究院
通讯作者	Wu, Xianqian
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lei, Xudong,Xiao, Kailu,Wu, Xianqian,et al. Dynamic Mechanical Properties of Several High-Performance Single Fibers[J]. MATERIALS,2021,14.
APA	Lei, Xudong,Xiao, Kailu,Wu, Xianqian,&Huang, Chenguang.(2021).Dynamic Mechanical Properties of Several High-Performance Single Fibers.MATERIALS,14.
MLA	Lei, Xudong,et al."Dynamic Mechanical Properties of Several High-Performance Single Fibers".MATERIALS 14(2021).