将两种核安全级电缆进行热-辐照联合老化试验,并对其老化后的压入模量和断裂伸长率进行测试,获得了电缆护套压入模量、断裂伸长率与老化的关系曲线.分析电缆护套的压入模量与老化的关系、不同老化速率对压入模量老化跟踪性的影响、以及压入模量与断裂伸长率的老化跟踪性的异同.结果表明:压入模量对于电缆B护套的老化跟踪性更好.由于具有无损性、定量性、对某些材料的老化跟踪性好等优点,压入模量可作为一种电缆状态指标.
Two 1E cable sheaths were conducted thermal-radiation ageing experiments, and their indenter modulus and elongation at break were tested, and then the relationship between indenter modulus, elonga-tion at break and ageing was obtained. The relationship between indenter modulus and ageing, the effects of ageing rate on the ageing tracking performance of indenter modulus, and the ageing tracking perfor-mance difference between indenter modulus and elongation at break were analyzed. The results show that the indenter modulus has better ageing tracking performance for the cable B sheath. Because the indenter modulus has non-destructivity, quantitative feature, and good ageing tracking performance for certain kinds of material, it could be as a state indicator for cable.
参考文献
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| [2] | 刘韬;朱斌;张涛;刘士立;徐洁;惠兆宇.基于压痕模量的电缆老化状态检测系统的开发[J].绝缘材料,2015(6):54-57. |
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