Surface Anomaly Observation Of Pre-insulated Bushing

Observing whether there are wrinkles or other defects in pre insulated sleeve can visually reflect the physical condition of pre insulated junction sleeve during production, storage and transportation. This deformation may lead to uneven insulation layer thickness, thus affecting the overall structural consistency of insulated joint sleeve. Careful inspection of the surface condition can be used to determine the presence of obvious wrinkles or irregular folds as a preliminary screening method.

When the sleeve surface exhibits wrinkles, potential material defects may become apparent. Surface wrinkles are accompanied by stress concentration, and this localized structural deformation may lead to subsequent performance fluctuations during service.