Characterization of Kevlar-29 fibers by tensile tests and nanoindentation

Bencomo-Cisneros, J.A.; Tejeda‐Ochoa, A.; García-Estrada, Joaquín; Herrera-Ramírez, C.A.; Hurtado-Macías, Abel; Martínez-Sánchez, R.; Ramirez, José Martin Herrera

doi:10.1016/j.jallcom.2011.11.031

Cited by 38 publications

(11 citation statements)

References 15 publications

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“…The test specimens were placed between steel wedges with serrated surfaces to prevent any slippage. Specimens with a variety of gage lengths (25,50,100,150,200, and 300 mm) were prefabricated for quasi-static tensile testing. Ten samples were tested for each gage length.…”

Section: Experimental Program Testing Materialsmentioning

confidence: 99%

“…Zohdi and Steigmann 24 addressed the effect of filament misalignment on the failure behavior of filament bundle and macroscopic fabric due to its multi-scale structure. Cisneros et al 25 studied the intrinsic stress-strain behavior and the cross-section mechanical properties of single Kevlar Õ 29 filaments using quasi-static loading tensile tests and nano-indentation. The samples have linear stress-strain curves and high strength and modulus with considerable scatter and severe splitting of the structure in fracture morphology.…”

Section: Introductionmentioning

confidence: 99%

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The effects of gage length and strain rate on tensile behavior of Kevlar® 29 single filament and yarn

Zhu

Huang

et al. 2016

Journal of Composite Materials

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The mechanical properties of Kevlar® 29 single filaments and yarns with different gage lengths were investigated by utilizing an MTI miniature tester and an MTS load frame. Single yarns of 25 mm were also tested over four different strain rates using a drop-weight impact system. The experimental results showed that the mechanical properties of Kevlar® 29 are sensitive to gage length, structural size scale, and strain rate. The tensile strength decreased with increasing gage length and the structural scale from fiber to yarn, and increased with increasing strain rate. Weibull analysis was conducted to quantify the degree of variability in tensile strength. The obtained Weibull parameters were then used in an analytical model to simulate the stress–strain response of single yarn. Finally, Weibull parameters of single filaments with other gage lengths and strain rates were also obtained by fitting the stress–strain curves of single yarns with corresponding testing conditions.

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Section: Experimental Program Testing Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effects of gage length and strain rate on tensile behavior of Kevlar® 29 single filament and yarn

Zhu

Huang

et al. 2016

Journal of Composite Materials

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“…[40][41][42][43][44] 3.1 Polymers reinforced with conventional and natural bres Conventional bres or synthetic bres such as carbon bre, glass bre, Aramid and Kevlar are widely used in various engineering applications. [45][46][47][48][49][50][51] High stiffness and excellent strength properties are two important factors that make the applications of these bres favourable. Natural bres with their long history of serving mankind are very important in a wide range of applications, and they compete and co-exist in the twenty-rst century with man-made bres, especially as far as quality, sustainability and economy of production are concerned.…”

Section: Fibre and Particle Reinforcementmentioning

confidence: 99%

The degradation of mechanical properties in polymer nano-composites exposed to liquid media – a review

et al. 2016

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The advancement of polymer nano-composites has been motivated by the need for materials with a specific combination of mechanical properties beyond those achieved from only one material.Integration of reinforcement into polymers at the nanoscale can provide a significant increase in numerous physical and mechanical properties of polymer nano-composites. However, in applications where contact with liquid media is unavoidable, the mechanical properties of polymer nano-composites suffer degradation which is a commonly observed phenomenon. Non aggressive liquid such as water is capable of lowering the mechanical properties of polymer nano-composites by acting as plasticizers while moderate and severe aggressive liquid when combined with residual stresses can cause unexpected brittle failure known as ESC. To date, only a few studies are reported discussing the ability of nano-fillers to resist degradation of mechanical properties in polymer nano-composites when exposed to liquid media. In this review, various factors responsible for mechanical property degradation caused by liquid media in polymer nano-composites and their remedies are studied.

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“…Aramid micro-fiber (AMF), which is commercially named as Kevlar, [1][2][3][4] is anisotropic and consists of a high-aligned poly-para-phenylene terephthalamide (PPTA) backbone linked by abundant intermolecular hydrogen bonds. [5][6][7][8] Due to its parallel orientation and dense stacking of the stiff benzene rings, AMF exhibits superior strength, modulus, toughness, and thermal resistance compared to other organic fibers, [9][10][11][12] so that it has been widely adopted in various demanding industrial and advanced-technology applications, including aerospace, military assets, high-performance composites, and so on.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of aramid nanoscale fiber‐based nanocomposite with transparency, flexibility, and selective adsorption capability

Wang

et al. 2021

Polymers for Advanced Techs

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Aramid nanofiber (ANF) has been regarded as an emerging excellent building block for preparing multifunctional high-performance composites, which are suitable for many applications in various fields. Based on this, for the first time, nanoscale bacterial cellulose (NBC) is used to modify ANF membrane via a direct blending followed with vacuum filtration. The chemical and physical structures of the NBC/ANF composite hybrid membranes (BAFM) are characterized by using Fourier transform infrared, X-ray diffraction, transmission electron microscope, and scanning electron microscope, demonstrating that NBC is well-dispersed into the ANF matrix. The two

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Characterization of Kevlar-29 fibers by tensile tests and nanoindentation

Cited by 38 publications

References 15 publications

The effects of gage length and strain rate on tensile behavior of Kevlar® 29 single filament and yarn

The effects of gage length and strain rate on tensile behavior of Kevlar® 29 single filament and yarn

The degradation of mechanical properties in polymer nano-composites exposed to liquid media – a review

Synthesis of aramid nanoscale fiber‐based nanocomposite with transparency, flexibility, and selective adsorption capability

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