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Effect of ply angle on the burst pressure of composite pressure vessels by filament winding

Saif Tamara, Saad Najim, Al-Zubiedy Ali, Idzikowski Adam

Budownictwo o Zoptymalizowanym Potencjale Energetycznym

2022

Vol. 11

223--233

A composite pressure vessel is an important structure in different applications including pipes, pipes under pressure and closed system pipes under high pressure and temperature such as gas pipelines and aircraft structures, because of the characteristics of polymer - a composite used as an alternative to heavy materials such as metal in the various applications, including the construction industry. The current work focuses on the study of strength phase orientation and their properties on the burst pressure strength and other parameters, which are very important in the design and manufacture of these vessels such as the selection of type of strength phase nylon 6, 6 and philosophy of mixing of the type of fiber with matrix material (epoxy). The work also includes the study of the effect of two layer angle ply (0, 90), (55, -55), (75, -75) and implements different material testing to evaluate the toughness and stiffness of these vessels and compare the experimental result with the theoretical result. A filament winding apparatus was designed and executed to manufacture different types of subjects according to these angle of ply nylon fiber. The mechanical tests (tensile test, drop test, pipe stiffness test, hydrostatic pressure test) were used to test the vessel. The results shown that the ply orientation (75, -75) has high (tensile strength, toughness, stiffness, impact and burst pressure) when compared with the results from other ply orientations. This shows that [75, -75] ply orientation is the optimal angle for the vessel. Tensile tests show that (75, -75) ply orientation samples have higher properties in two directions, longitudinal and transverse, when compared with other angles.

Metodyka doboru struktury kompozytowego oplotu nośnego zbiorników wytwarzanych metodą nawijania

Błażejewski W.

Czasopismo Techniczne. Mechanika

2009

R. 106, z. 1-M

9-14

Wyznaczano eksperymentalnie optymalną strukturę ścianki nośnej zbiorników kompozytowych. W celach porównawczych zostały wykonane zbiorniki ciśnieniowe o różnej strukturze nawijania. Pozostałe parametry (takie jak kąt, grubość ścianki, udział żywicy i włókien szklanych) pozostały te same. Następnie zostały przeprowadzone badania ciśnieniowe. Odkształcenia mierzone na linii zgrupowania przeplotów struktury Nr 1 były około dwa razy mniejsze od odkształceń mierzonych w obszarach pomiędzy liniami.

The optimal structure of composite wall of pressure vessels was experimentally determined. For that purpose the comparative composite pressure vessel with different winding structures (fig. 2) were made. Other winding parameters (like angle, composite wall thickness, content of resin and glass fibers) were the same. Pressure vessels were burst tested. The smallest deformations (strains) for structure no. 1 were registered in an area of interleaving lines, whereas the biggest ones were between these lines. For other structures and the same pressure values such extreme strain field distributions were not observed.