This study investigates the tensile and compressive failure behavior of a single-lap joint of green composites obtained by resistance welding. The green composites composed of poly (lactic)acid (PLA) and bamboo fiber were fabricated in a hot compression by the film-stacking method. The different heating elements namely polypyrrole (conductive polymer), carbon fiber (CF) fabric, and stainless steel (SS) mesh were used to perform the resistance welding of nonconductive green composites. The heating time (30, 60, and 90 s) and the percentage of overlapping area covered by the heating element (35, 65, and 100%) were the other two welding parameters considered for experimental investigation. The effect of welding parameters on tensile and compressive failure loads was experimentally investigated through a full-factorial experimental design. The load vs. displacement and failure behavior of the welded specimen under different conditions was extensively investigated. The statistical analysis of the experimental data was performed to find the relative significance of the welding parameters. The type of heating element was found to be the most significant parameter as it has maximum statistical contribution in both tensile and compressive failure loads. The tensile and compressive failure loads were improved by 31% and 63% when CF fabric was used as a heating element as compared to the SS mesh heating element. Similarly, failure loads obtained by using CF fabric were improved by 187% (tensile) and 323% (compressive) when compared one-on-one with polypyrrole heating element.

这项研究调查了通过电阻焊接获得的绿色复合材料的单搭接接头的拉伸和压缩破坏行为。通过薄膜堆叠法在热压下制备了由聚乳酸（PLA）和竹纤维组成的绿色复合材料。使用不同的加热元件，即聚吡咯（导电聚合物），碳纤维（CF）织物和不锈钢（SS）网来进行非导电生坯复合材料的电阻焊接。加热时间（30、60和90 s）和加热元件覆盖的重叠区域的百分比（35、65和100％）是用于实验研究的其他两个焊接参数。通过全要素实验设计，实验研究了焊接参数对拉伸和压缩破坏载荷的影响。负载与 广泛研究了不同条件下焊接试样的位移和破坏行为。对实验数据进行统计分析以发现焊接参数的相对重要性。发现加热元件的类型是最重要的参数，因为它在拉伸和压缩破坏载荷中具有最大的统计贡献。与SS网状加热元件相比，使用CF织物作为加热元件时，拉伸和压缩破坏负荷分别提高了31％和63％。类似地，与聚吡咯加热元件一对一比较时，使用CF织物获得的破坏载荷提高了187％（拉伸）和323％（压缩）。对实验数据进行统计分析以发现焊接参数的相对重要性。发现加热元件的类型是最重要的参数，因为它在拉伸和压缩破坏载荷中具有最大的统计贡献。与SS网状加热元件相比，使用CF织物作为加热元件时，拉伸和压缩破坏负荷分别提高了31％和63％。类似地，与聚吡咯加热元件一对一比较时，使用CF织物获得的破坏载荷提高了187％（拉伸）和323％（压缩）。对实验数据进行统计分析以发现焊接参数的相对重要性。发现加热元件的类型是最重要的参数，因为它在拉伸和压缩破坏载荷中具有最大的统计贡献。与SS网状加热元件相比，使用CF织物作为加热元件时，拉伸和压缩破坏负荷分别提高了31％和63％。类似地，与聚吡咯加热元件一对一比较时，使用CF织物获得的破坏载荷提高了187％（拉伸）和323％（压缩）。发现加热元件的类型是最重要的参数，因为它在拉伸和压缩破坏载荷中具有最大的统计贡献。与SS网状加热元件相比，使用CF织物作为加热元件时，拉伸和压缩破坏负荷分别提高了31％和63％。类似地，与聚吡咯加热元件一对一比较时，使用CF织物获得的破坏载荷提高了187％（拉伸）和323％（压缩）。发现加热元件的类型是最重要的参数，因为它在拉伸和压缩破坏载荷中具有最大的统计贡献。与SS网状加热元件相比，使用CF织物作为加热元件时，拉伸和压缩破坏负荷分别提高了31％和63％。类似地，与聚吡咯加热元件一对一比较时，使用CF织物获得的破坏载荷提高了187％（拉伸）和323％（压缩）。