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Experimental analysis of tensile and compressive failure load in single-lap bolted joint of green composites

机译：绿色复合材料单圈螺栓接头中拉伸和压缩破坏载荷的实验分析

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摘要

In this study, bamboo/PLA green composites have been fabricated using a compression moulding to investigate the single-lap bolted joining behaviour of the developed composites. The factors affecting the strength of the joint such as hole quality and geometrical parameters have been experimentally investigated. The cutting parameters (feed and speed) and drill geometries have been optimised using Taguchi's method to obtain the lower drilling induced forces. The optimised parameters have been used for making hole in composite specimens to facilitate the bolted joint. The influence of the input parameters on the induced forces has also been analysed through analysis of variance (ANOVA). The behaviour of bolted joint specimens has been investigated by evaluating the tensile and compressive failure loads. The influence of width to diameter ratio (w/d) (2.5, 3.25, and 4), edge to diameter ratio (e/d) (1.5, 2.25, and 3.125), and bolt fastening torque (10, 15, and 20 N-m) on the failure load has been statistically analysed by performing ANOVA. Both tensile and compressive failure load was found to be increased at a higher value of w/d, e/d, and bolt fastening torque. From statistical analysis, w/d was found to be the most significant parameter followed by bolt fastening torque and e/d.
机译：在该研究中，使用压缩模塑制造竹/ PLA绿色复合材料，以研究开发复合材料的单圈螺栓连接行为。实验研究了影响关节强度和几何参数等关节强度的因素。使用Taguchi的方法优化了切割参数（进料和速度）和钻头几何形状，以获得较低钻孔诱导力。优化的参数已用于复合样品中的孔，以促进螺栓接头。通过对方差（ANOVA）分析，还通过分析分析了对诱导力的输入参数的影响。通过评估拉伸和压缩破坏载荷来研究螺栓连接标本的行为。宽度与直径比（W / D）（2.5,3.25和4）的影响，直径比（E / D）（1.5,2.25和3.125），以及螺栓紧固扭矩（10,15和20 NM）通过执行ANOVA进行统计分析故障负载。发现拉伸和压缩破坏载荷均在W / D，E / D和螺栓紧固扭矩的较高值下增加。从统计分析中，发现W / D是最重要的参数，然后是螺栓固定扭矩和E / D。

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