Aging Mechanisms and Monitoring of Cable Polymers

Nicola Bowler and Shuaishuai Liu
Publication Target: 
IJPHM
Publication Issue: 
Special Issue Nuclear Energy PHM
Submission Type: 
Full Paper
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ijphm_15_029.pdf4.99 MBOctober 3, 2015 - 8:11pm

Aging mechanisms of two polymeric insulation materials that are used widely in nuclear power plant low-voltage cables; cross-linked polyethylene (XLPE) and ethylene propylene rubber/ethylene propylene diene terpolymer (EPR/EPDM), are reviewed. A summary of various nondestructive methods suitable for evaluation of cable insulation is given. A capacitive sensor capable of making local nondestructive measurements of capacitance and dissipation factor on cable polymers, and potentially suitable for in situ cable monitoring, is introduced. Correlating values of elongation-at-break, indenter modulus, capacitance and dissipation factor measured on a set of 47 aged flame-resistant EPR samples shows a higher correlation between indenter modulus and dissipation factor than between indenter modulus and elongation-at-break.

Publication Year: 
2015
Publication Volume: 
6
Publication Control Number: 
029
Page Count: 
12
Submission Keywords: 
thermal aging
radiation aging
capacitive sensor
cables
Submission Topic Areas: 
Data-driven methods for fault detection, diagnosis, and prognosis
Submitted by: 
  
 
 
 

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