Suitability of Tubular Woven Fabric as the Reinforcement of Composite Pipes (original) (raw)
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The main traditional technique for commercial manufacturing of composite pipes is filament winding in which the winding angle and the discontinuity of the structure (caused by starting and ending points of the winding process) are two important matters of concern. In the present study, circular woven fabric with its orthogonal net-shaped continuous structure was produced from polyester yarns. The fabric was wet with epoxy and hand layup was used to manufacture the composite pipes. The composite pipes were subjected to internal hydrostatic pressure and their burst strength was recorded. In addition, the tensile strength of flat laminas was assessed in the warp and weft directions. We estimated and analyzed the failure strength of composite pipes using Tresca’s failure criterion and Finite Element (FE) modeling. The experimental burst strength was almost 23% more than the FE model and 77% more than the theoretical estimate.
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Advancing globalisation in apparatus and plant construction is leading to ever higher demands being made as regards efficiency and performance on the many various components and in this respect on complex piping elements in particular. These construction elements usually need to resist not only the high internal pressures and temperatures but also the influence of aggressive media. Overcoming the diverse technical demands connected with this can often only be achieved by employing new materials as well as by using corresponding construction techniques and manufacturing technologies.
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Advancing globalization in apparatus and plant construction is leading to ever higher demands being made in terms of efficiency and performance on the many various components and on complex piping elements in particular. These construction elements usually need to resist high internal pressures and temperatures as well as the influence of aggressive media. Often, the diverse technical demands can only be met by employing new materials and by using appropriate construction techniques and manufacturing technologies. A lightweight and low-cost alternative to conventional metals and the now well-established apparatus construction material of glass fiber reinforced plastics in wire wrap technique form the group of novel textile composite materials which, apart from a very high design flexibility in terms of shaping and the load-adapted reinforcing arrangement, specifically offer a considerable cost-saving potential. This makes the plastic composite structures with requisite textile reinforcement virtually predestined for cost-effective pipeline systems in chemical apparatus construction with its typical range of construction elements such as T-pipe pieces, angle pieces, reducing pieces or also pipe pieces.
Numerical comparison between single layer woven flexible pipe and reinforced thermoplastic pipe
JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES, 2017
The weight of a conventional flexible pipe and corrosion poses a major challenge for pipelines at significant water depths, making composite material an ideal alternative for steel in the armor layers. A woven configuration was developed for the armour layer by utilising glass epoxy, namely the woven flexible pipe. However, the performance of the woven flexible pipe in deep water conditions are unknown, thus the need for a numerical analysis. In this paper, an initial comparison was conducted for the woven flexible pipe with a typical bonded flexible pipe called the thermoplastic reinforced pipe, where one layer of the woven flexible pipe is considered to show its performance. The results showed higher stress experienced by the woven flexible pipe as compared to the reinforced thermoplastic pipe, where the lowest difference was 50.8%. It was also shown that the woven flexible pipe can withstand the 6 MPa internal pressure at a thickness of 6 mm and above. The result is still inconclusive as an experiment test is required to validate the results. However, it serves as a good estimation of the expected result for future experimental test.
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The industrial use of Synthetic fibre has been continuously increasing. In the interior of cars, pipelines, the percentage of fibre-reinforced multi-material parts may reach 40%.Synthetic fibres are important reinforcement materials in modern composites for high performance applications primarily due to their high specific strength and high specific modulus. However, the environmental unfriendly production method of synthetic fibres is an area of concern. Amid the growing global awareness and push for environmentally friendly products, the need to seek viable alternatives materials for synthetic fibres has been rising. Modification of natural fibres to rival the mechanical performance of synthetic fibres has been looked into by many research.
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Fabric-based laminated composites are used considerably for multifaceted applications in the automotive, transportation, defense, and structural construction sectors. The fabrics used for composite materials production possess some outstanding features including being lighter weight, higher strength, and lower cost, which helps explain the rising interest in these fabrics among researchers. However, the fabrics used for laminations are of different types such as knit, woven, and nonwoven. Compared to knitted and nonwoven fabrics, woven fabrics are widely used reinforcement materials. Composites made from fabric depend on different properties such as fiber types, origin, compositions, and polymeric matrixes. Finite element analysis is also further facilitating the efficient prediction of final composite properties. As the fabric materials are widely available throughout the world, the production of laminated composites from different fabric is also feasible and cost-effective. This r...