Experimental and Theoretical Investigations of Creep on a Composite Pipe under Compressive Transverse Loading

다국어 초록 (Multilingual Abstract)

The use of Glass Fiber Reinforced Polyester (GFRP) pipes in the industry increased considerably in the pastdecades. These pipes are used in various applications such as conveying water, sewage, seawater, industrial wastewater,petroleum and also in power plants and chemical industries. These pipes are resistance to corrosion resistance and thus theyare exploited for long-term purposes. Unlike metals, creep occurs in polymeric materials at any temperature. GFRP pipes aregenerally designed to withstand against the internal pressure and also transverse compressive force as the two main loadcases. Design architecture of composite layers, i.e. number of layers and their fiber orientations, is done based on the initialresponse of the pipe structure to the aforementioned loadings known as short-term behavior. But evaluating the long-termperformance of the pipes is one of the important design requirements according to the working life of these pipes. In thisstudy, the long-term behavior of a GFRP pipe undergoing transverse loading is investigated experimentally and theoretically.
The influence of structural parameters including the thickness of liner, lay-up orientation and number of layers are evaluated.

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