In-Service Aged Composite Insulators at Transmission Line Investigated by the Micro-Computerized Tomography

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概要

• 論文の詳細を見る

• Composite insulators aged in-service for almost 10 years at the transmission line of 230 kV, in an area where brittle fracture of a composite insulator occurred, were inspected by the micro-computed tomography, µ-CT, and by the scanning electron microscope, SEM. As a result, several cracks with different depths under pollutant scale and confined in silicone housing were detected by the µ-CT. Surface of silicone housing was observed by the SEM. Many randomly oriented cracks from micrometers size were observed. However, larger cracks detected and evaluated by the µ-CT appear essentially perpendicular to the composite rod axis. In order to explain the evolution of those large cracks in composite insulators, a model based on µ-CT and SEM data was proposed.

• The Japan Institute of Metals and Materialsの論文

著者

• Monteiro Sergio

  CHESF — Companhia Hidroelétrica do São Francisco

• Silva Pietro

  UFPE — Federal University of Pernambuco, Department of Mechanical Engineering

• Shinohara Armando

  UFPE — Federal University of Pernambuco, Department of Mechanical Engineering

• Pacheco Admilson

  UFPE — Federal University of Pernambuco, Department of Mechanical Engineering

• Castro Filho

  CHESF — Companhia Hidroelétrica do São Francisco

関連論文

• In-Service Aged Composite Insulators at Transmission Line Investigated by the Micro-Computerized Tomography

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