Article,

Mechanical Aspects of Crimped Glass Reinforced Plastic (GRP) Rods

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IEEE TRANSACTIONS ON POWER DELIVERY, 18 (3): 852-858 (2003)

Abstract

Nonceramic insulators (NCis) with crimped metal end fittings were studied to understand the nature of the interfacial stresses at the rod-metal fitting interface. The study involved both experimental and computational aspects. Monotonic tension tests were performed on rod assemblies (bare rod with end fittings crimped) as well as full-scale composite insulators. Different rod formulations (E-glass, E-CR glass fibers, resins made of epoxy, polyester, and vinyl ester) were evaluated. The experimental results were used to calculate the stresses at the interface. It is shown that the onset of debonding/detachment of the rod from the end fitting c…(more)

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