Aging in silicone rubber used for outdoor insulation

Ravi S. Gorur, George G. Karady, Anurag Jagota, Minesh Shah, Ann M. Yates

Research output: Contribution to journalArticlepeer-review

150 Scopus citations


A hypothesis for aging produced by dry band arcing in silicone rubber material used for outdoor insulation is presented and experimentally proven. Aging is indicated by permanent changes. The analytical techniques used to study the permanent changes are, Fourier Transform Infra-Red (FTIR) Spectroscopy, Energy Dispersive X-Ray (EDX) Analysis, X-Ray Diffraction (XRD) and Surface Roughness Measurement. The paper highlights the fact that there are permanent changes occurring in the material that lead to progressive degradation in the long run, even though there can be a complete recovery of surface hydrophobicity in a short time.

Original languageEnglish (US)
Pages (from-to)525-538
Number of pages14
JournalIEEE Transactions on Power Delivery
Issue number2
StatePublished - 1992


  • Permanent changes
  • aging
  • analytical techniques
  • hydrophobicity
  • silicone rubber

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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