Free vibration and mechanical behavior of treated woven jute polymer composite

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING
Savendra Singh, Chetan Hirwani
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Abstract

Introduction: Recently, the use of natural fibers have been increased to replace the use of synthetic fibers to save our environment from waste disposal problems, natural fibers have a lower level of mechanical properties. The purpose of work: This study examines the effect of treating the surface and deeper layers of jute fiber on the mechanical behavior and characteristics of free vibrations of a composite material based on it. The methods of investigation: due to the uniform distribution of stresses in the WARP and WEFT directions, four-layer basket weave jute fibers were used in this study. Result and discussion: the mechanical and free vibration properties of composite materials are significantly improved when NaOH is applied to jute fibers because it eliminates the weak matrix material lignin and makes the fibers stiffer and stronger. However, increasing the percentage of NaOH and soaking time for the fibers in NaOH solution have little effect on these properties. The highest value of tensile strength and tensile modulus are found 50 ± 1.17 MPa and 1.94 ± 0.23 GPa respectively seen in case of basket weave jute fiber composite with 1 hour treatment. Tensile strength and tensile modulus increase about 12 % and 40 % over the stokes value, respectively. Similarly the value of flexural strength and flexural modulus are found 95 ± 1.17 MPa and 3.99 ± 0.23 GPa respectively in case of basket weave jute fiber composite with 1 hour treatment. It also shows the highest value of fundamental frequency 77.837 Hz.The presence of an O-H bond in the composite, as revealed by FTIR study, gives it a hydrophilic character and limits its use in humid environments. The fiber to matrix ratio is shown in SEM images.
经处理的编织黄麻聚合物复合材料的自由振动和力学性能
简介:近年来,天然纤维的使用越来越多,以取代合成纤维的使用,以拯救我们的环境免于废物处理的问题,天然纤维具有较低水平的机械性能。工作目的:本研究考察了黄麻纤维表面和深层处理对基于它的复合材料的机械行为和自由振动特性的影响。研究方法:由于应力在WARP和WEFT方向上分布均匀,本研究采用四层篮编黄麻纤维。结果与讨论:在黄麻纤维中加入NaOH后,复合材料的力学性能和自由振动性能明显改善,因为NaOH消除了弱基质材料木质素,使纤维变得更硬、更强。然而,增加NaOH的比例和在NaOH溶液中的浸泡时间对纤维的这些性能影响不大。篮织黄麻复合材料经1小时的拉伸强度和拉伸模量最高,分别为50±1.17 MPa和1.94±0.23 GPa。拉伸强度和拉伸模量分别比斯托克斯值提高约12%和40%。篮织黄麻复合材料经1小时处理后,其抗弯强度和抗弯模量分别为95±1.17 MPa和3.99±0.23 GPa。它还显示了基频77.837 Hz的最大值。FTIR研究表明,复合材料中O-H键的存在使其具有亲水性,限制了其在潮湿环境中的使用。纤维与基体的比率显示在SEM图像中。
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来源期刊
Obrabotka Metallov-Metal Working and Material Science
Obrabotka Metallov-Metal Working and Material Science METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
1.10
自引率
50.00%
发文量
26
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