Development of an electrically conductive fiber reinforced plastic pipe

Abstract

Baton Rouge, LouisianaFiber-reinforced plastic (FW) pipe has much lower density and better corrosion resistance characteristics than currently used alloy pipe, but it generally does not conduct electricity as well as steel pipe. In this study, an FRP pipe was made conductive by doping the inner liner vinyl ester resin with milled carbon fibers. The joints were also made conductive using the same resin, thus allowing the pipe to be electrically grounded. The result was a pipe having a surface resistivity of less than 125 a/ 0 using current manufacturing processes.

Coupled finite/boundary element solution of magnetothermal problems

“…The finite element formulation of equation ( 7) is straightforward. Following the variational approach [13], one obtains the integral representation of equation ( 7) as below, (8) with…”

“…Magnetothermal problems arise naturally during electromagnetic processing of electrically conducting materials. Examples can be cited from widely practiced industrial processes such as induction furnace [1][2][3], electromagnetic casting [4,5], magnetic suspension melting [6], floating zone crystal growth and zone refining [7], induction heating treatment [8] as well as important laboratory systems for materials property measurements such as magnetic levitation processes under both normal and micro gravity [9,10]. In these processes, heat transfer is profoundly affected by Joule heating that results from the interaction of eddy currents induced in the materials by an externally imposed alternating electromagnetic field.…”