一种电缆护套聚氯乙烯材料机械性能校正方法

By correcting the tensile curves of the PVC outer sheath material of cables at different temperatures, and utilizing the conversion parameters of rotation angle, scaling factor, and translation, the normalization problem of yield stress data was solved, thus improving the accuracy of material evaluation.

CN117367967BActive Publication Date: 2026-07-17ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
Filing Date
2023-11-13
Publication Date
2026-07-17

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Abstract

本发明提供了一种电缆护套聚氯乙烯材料机械性能校正方法，属于电缆外护套材料评估技术领域。采集不同温度下聚氯乙烯材料的拉伸曲线数据，建立不同温度下聚氯乙烯应力应变曲线；对曲线数据预处理；分析不同温度下的聚氯乙烯应力应变曲线，获取不同温度下的转换参数使得不同温度下的曲线向同一温度下曲线位置靠近，所述转换参数包括旋转角度、缩放因子和平移量；获取待转换聚氯乙烯应力应变曲线，使用转换参数对曲线数据进行旋转、缩放和平移，得到转换后聚氯乙烯应力应变曲线。本发明通基于得到的旋转角度、缩放因子和平移量将已知温度曲线变换到其他温度的曲线，以实现不同温度之间的屈服强度变换和校正。
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