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The tensile behavior of Kevlar-29 fibers
ARMANDO TEJEDA OCHOA
JOSE ANTONIO GARCIA ESTRADA
CARLOS ALONSO HERRERA RAMIREZ
WILBER ANTUNEZ FLORES
Ricardo Martínez Sánchez
JOSE MARTIN HERRERA RAMIREZ
Acceso Abierto
Sin Derechos Reservados
Kevlar
Kevlar is an organic fiber (poly-para-phenylene-terephthalamide) in the aromatic polyamide family, produced by DuPont de Nemours [1]. It has a unique combination of high strength, high modulus, toughness and thermal stability. Its remarkable properties are mainly related to the structure developed during the spinning process [2]. It was developed for demanding industrial and advancedtechnology applications. In this work, single Kevlar-29 fibers have been subjected to tensile tests at room temperature using a Universal Fiber Tester developed originally by Bunsell et al. [3], equipped with a load cell of 250 g calibrated from 0 to 100 g, with a precision of 0.01 g. The specimen gauge length was 30 mm and the fiber was gripped between two sets of jaws. Data acquisition used a PC linked to the fiber tester via a National Instrument interface card and WinATS 6.2 software from Sysma. In order to normalize the stress, the diameter of each fiber was systematically measured before each test by using a Mitutoyo LSM-500S laser apparatus, with an accuracy of 0.01 μm.
2011
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