Effect of Process Parameters on Thermal and Mechanical Properties of Filament Wound Polymer-Based Composite Pipes

Abstract

The aim of this study was to investigate the mechanical and thermal properties of composite pipes based on epoxy resin and glass fibers produced by filament winding (FW) technology. Epoxy resins are widely used polymers in FW composite structures. The thermal characterization of the neat epoxy resin, curing, and post-curing characteristics for the determination of polymerization and glass transition temperature was performed, which is important for the mechanical properties of polymer composite pipes. In the present work, the applicability of the full factorial experimental design in predicting the hoop tensile and compressive strengths of glass fiber/epoxy resin composite pipes was investigated. The composite pipes in accordance with the 23 full factorial experimental design by using of three parameters and two levels of variation were prepared. The winding speed of the composites was taken to be the first factor, the second was the fiber tension, and the third was winding angle. To approximate the response, i.e., the mechanical properties of the composite pipes within the study domain, the first-order linear model with the interaction was used. The influence of each individual factor to the response function was established, as well as the influence of the interaction of the two and three factors. Additionally, those results were completed with the thermal characterization of the polymer composite pipes. From received results from mechanical and thermal characterization, it was concluded that the properties of composite specimens were highly affected by the analyzed parameters in filament winding technology. It was found that the estimated first-degree regression equation with the interaction gave a very good approximation of the experimental results of the hoop tensile and the compressive strengths of composite pipes within the study domain.

Stress and Deformation Analysis of Prestressed Wound Composite Components with an Arch-Shaped Metal Liner

“…At present, many scholars have undertaken analyses of the post-winding residual stresses in filament-wound thick-shelled components. Some researchers employ statistical methods to investigate how process parameters of winding affect the stress distribution in components, emphasizing the critical role of winding tension as a significant parameter affecting component stress [10][11][12][13]. Others concentrate on utilizing analytical models to scrutinize and forecast the distribution of stresses during the winding process.…”

Strength of Composite Pressure Insulators for High Voltage Circuit Breakers: An Experimental and Numerical Investigation

“…Ring specimens notched according to the recommendations provided in [ 13 , 14 , 15 ] were adopted in [ 24 , 25 , 26 , 27 , 28 , 29 , 30 ] to evaluate the hoop properties of tubular composites using the split-disk testing method. However, in many of the studies [ 24 , 25 , 26 , 28 , 29 ], the ring specimens were mounted on the test device with the notched sections positioned across the split of the fixture. The failure thus occurred in the unsupported region of the ring, which is characterized by a stress field greatly affected by spurious local bending.…”