Fatigue Damage Analysis of Composite Insulator Cor Rod/sheath Interface

A self-made fatigue testing machine was used to simulate the damage process of the insulator interface under working conditions and the damage degree is evaluated by the compressive shear test. The improved interface adhesion model reflects the interface debonding process under different fatigue loa...

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Bibliographic Details
Published inMATEC Web of Conferences Vol. 264; p. 1001
Main Authors Zhao, Xinze, Xi, Senming, Zhao, Meiyun, PENG, Wenyun, Tian, Seng, Li, Wei
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 2019
Subjects
Adhesion tests
Coefficients
Computer simulation
Crack propagation
Damage assessment
Debonding
Fatigue failure
Fatigue testing machines
Fatigue tests
Peeling
Shear tests
Sheaths
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Summary:A self-made fatigue testing machine was used to simulate the damage process of the insulator interface under working conditions and the damage degree is evaluated by the compressive shear test. The improved interface adhesion model reflects the interface debonding process under different fatigue loads by introducing the damage coefficient χ, migration coefficient α and the debonding coefficient μ. The relationship of fatigue loads and interface damage is established by the peeling force, the unit interface separation work and the peeling time. The test demonstrates that the interface damage near the bottom of the insulator is worse than that near the middle part. The result of this analysis will be beneficial in easily finding damaged places of the insulator, and so as to reduce the power breakdown.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/201926401001