@article{article_1404177, title={Investigation of Mechanical Properties and Damage Development of Filament Wound GFRP Composite Pipes by Ring Tensile Test}, journal={Necmettin Erbakan Üniversitesi Fen ve Mühendislik Bilimleri Dergisi}, volume={6}, pages={93–104}, year={2024}, DOI={10.47112/neufmbd.2024.34}, author={Gemi, Lokman and Azeem, Mohammad and Yazman, Şakir and Kayrıcı, Mehmet and Gök, Onur}, keywords={Filament winding (FW), Ring test, Delamination, Composite pipe}, abstract={Composite pipes produced by the filament winding (FW) method are used in many engineering fields due to their lightness, corrosion resistance and high strength. Composite pipes working under pressure, particularly in natural gas and oil pipelines, are specially designed to withstand the loads they will be exposed to in the area where they are used. With the FW production method, composite pipes with different properties and strengths can be produced according to the needs by changing the fiber type, fiber winding angle and number of layers. In the light of varying parameters, it is necessary to determine the mechanical properties of each pipe produced. One of the methods of determining the mechanical properties of composite pipes operating under internal pressure is the ring tensile test. In this study, glass fiber reinforced plastic (GFRP) pipes with an inner diameter of 72 mm and a length of 1 m with ±55° fiber configuration were produced by the FW method. Ring tensile test specimens with 30 mm wide and 20 mm reduced sections were prepared from the produced pipes according to ASTM D2290 standard. Experiments were carried out on an Instron 8801 tester and data were recorded. The data obtained after the ring tensile tests of composite pipes were processed, converted into graphics and interpreted comparatively. After the experiment, the damage areas were photographed at high resolution. Detailed macro and micro (SEM) damage analysis was performed to determine the damage modes.}, number={1}, publisher={Necmettin Erbakan University}