Abstract
Glass fiber-reinforced epoxy composite pipes are used in submarine applications, natural gas, and oil transportation lines, transfer of chemical liquids. Especially in the transport of pressurized fluids, changes in the strength of the pipes are important. The corrosive effect of seawater has an important impact on the mechanical properties of the composite material. In particular, the alteration in hoop tensile strength is one of the issues to be investigated. In this experimental study, glass fiber-reinforced epoxy resin composite pipes were exposed to the seawater aging process for different time periods (1, 2 and 3 months) in order to determine the effects of seawater absorption behavior on hoop tensile strength. Hoop tensile strength test was realized in accordance with ASTM D2290 Procedure A. As a result of this work, the average tensile strength values of the composite pipes decreased as the waiting times in seawater increased.
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