Results of experimental investigations into a unidirectional composite of basalt fibers and epoxy resin used as part of high-voltage electric wires are presented. Tensile tests of BFRP specimens previously held wrapped around a transportation drum during 10 h were carried out. The influence of the keeping time of the BFRP core in the composition of a high-voltage electric wire on drums of diameter 385 mm on the elastic, strength and deformation properties of the basalt plastic was evaluated. Tensile, three-point bending and torsion tests on the plastic with different static loads were carried out, and the corresponding deformation diagrams were obtained. The maximum torsion angle of BFRP specimens as a function of the axial load is determined. The results obtained can help one to analyze the operating modes of BFRP core in high-voltage electric wires and to get new data for their strength calculations.

中文翻译：

---

复合高压线用玄武岩纤维增强塑料棒的扭转和三点弯曲力学性能

介绍了对用作高压电线一部分的玄武岩纤维和环氧树脂的单向复合材料的实验研究结果。对先前缠绕在运输滚筒上的 BFRP 试样进行了 10 小时的拉伸试验。评估了BFRP芯在直径为385 mm的鼓上的高压电线组成中的保持时间对玄武岩塑料的弹性、强度和变形性能的影响。对不同静载荷下的塑料进行拉伸、三点弯曲和扭转试验，得到相应的变形图。BFRP 试样的最大扭转角作为轴向载荷的函数被确定。