designandfabricationoflowcostfilamentwindingmachine-外文文獻(已修改)
2025-06-01 18:57 本頁面
【正文】 cost.Sahari,Universiaccepted24andament winding machine. In this work, a filament winding machine was designed and developed for the fabrication of pipes andfor posite cylindrical structures fabrication at low other), either previously impregnated with a matrixrotating shaft, which is coupled to either a gear or achain or belt reduction system, or directly to the motorunit. Generally, an AC or servomotor is used because*Corresponding author. +60 3 86567101。 fax: +60 3 86567099.Email address: (. Sapuan).Materials and Design 28 (2020)Materials02613069/$ see front matter C211 2020 Published by Elsevier Ltd.cost. In this process, posite layers are successivelywound on a rotating mandrel, as presented in Fig. 1.The layers may be wrapped at di?erent angles varyingfrom hoop layers, which are perpendicular to the cylinder axis, to helical layers which are at an angle to the cylinder axis. The construction of posite cylinder byfilament winding consists of three major steps [1], thefirst is the design, which includes the selection of materials, geometry, and fiber orientations while the secondis fiber placement, the mechanical means by which thefibers are placed in their proper positions. Finally, thethird is the selection and control of conditions whichmaterial or impregnated during the winding, are placedover a rotating and removable form or mandrel in a prescribed way to meet certain stress conditions. The reinforced fibers are usually made of glass, Kevlar orcarbon. Owing to simplicity of process, the hardwareconfiguration is quite standard, and generally involvestwo main subsystems。 the rotary assembly and thedelivery system.The rotary assembly consists of two structural blocks。one fixed and the other linearly movable unit in which a2axis mechanically driven mandrel is mounted onto itsholders. On the fixed end, the holder is connected to around shape specimens. A lathetype machine and a wet winding method were used in the design of the machine. It provides a capability for producing pipe specimens with an internal diameter up to 100 mm and lengths up to 1000 mm. The range of the windingangle, or the fiber orientation angle, starts from 20C176 to 90C176 depending on the mandrel diameter used. Mandrel speed is kept constantas revolutions per minute (rpm) while the speed of screw of delivery unit varies from 0 rpm to a maximum of 250 rpm. In thefilament winding process used, a single glass roving is drawn through a bath of precatalyzed resin which is mounted on the leadscrew by the rotating mandrel. A control unit was used to control the whole process and achieve regular winding and good surfacefinish. Tube samples and other circular specimens of di?erent dimensions were produced using this machine for the di?erentmechanical tests and applications.C211 2020 Published by Elsevier Ltd.Keywords: Filament winding。 Composite tube。 Glass fiber。 Matrix。 Fiber orientation angle1. IntroductionFilament winding has emerged as the primary processmust be maintained during the manufacturing process.A process for fabricating a posite structure in
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