XLPE电缆绝缘层残余应力的测试及工艺改进  

TEST OF RESIDUAL STRESSES IN XLPE CABLE

作　　者：陈巨兵[1] 沈勇[1] 俞忠[1] 周雁 章铭杰 

机构地区：[1]上海交通大学工程力学系,上海200240 [2]上海马桥电缆厂,上海201111

出　　处：《高电压技术》2004年第3期1-2,14,共3页High Voltage Engineering

基　　金：国家自然科学基金资助项目 (No .10 10 2 0 11)

摘　　要：由于交联聚乙烯电缆生产过程中产生的残余应力对其绝缘性能影响很大[1 ] ,而残余应力的随机性 ,很难准确计算其大小及方向 ,因此采用云纹干涉技术测试交联聚乙烯电缆绝缘层的机械内应力。通过加热释放残余应力 ,测试得出了它随温度和时间变化的释放规律 :应力释放幅度随温度的变化 ,在某些温度段呈递增而在另一温度段则呈递减趋势 ;The performance of parts of XLPE cable are influenced intricately by residual stresses in production. It is difficult to determine residual stresses because of their randomness. One kind of three directional grating is introduced here in this paper. By means of moire interference technique, a new method of residual stress measurement is developed. When the XLPE specimen is being heated, its residual stresses will release, and then the disciplinarian of the released residual stresses on the surface of the specimen with temperature variations is obtained.

关 键 词：XLPE电缆 绝缘层 残余应力 测试 生产工艺 技术改进 电力电缆 

分 类 号：O342[理学—固体力学]