Nondestructive Condition Assessment Techniques for the Ethylene-Propylene Rubber Cable. Issue 1 (2nd January 2017)

• Record Type: Journal Article
• Authors: Meng, Xiaokai; Wang, Zhiqiang; Li, Guofeng
• Is Part Of: Research in nondestructive evaluation. Volume 28:Issue 1(2017)
• Page Start: 45
• Page End: 59
• Publication Date: 2017-01-02
• Subjects: Dielectric response -- elongation at break retention rate -- ethylene propylene rubber -- remaining life -- time-temperature shift; Nondestructive testing -- Periodicals; 620.112705
• DOI: 10.1080/09349847.2016.1262929
• Languages: English
• ISSNs: 0934-9847

Abstract

ABSTRACT: In order to analyze the aging of the active Ethylene-Propylene Rubber (EPR) cable, the dielectric dissipation factor (tan δ) was proposed as a nondestructive method of cable insulation condition assessment. Firstly, the EPR marine cable was investigated in this article, and the data of elongation at break retention rate (EAB%) after accelerated aging under different temperatures were used to fit by means of the optimized time-temperature shift factor. The endpoint judgment index of dielectric dissipation factor was deduced when EAB% reached to 50%. Secondly, the cable's lifetime calculated by tan δ was compared with the EAB% in order to confirm the accuracy of the method. The results show that the lifetime of tan δ is consistent with EAB% and provides a new method for the rapid evaluation of the EPR cable's remaining life.