designandfabricationoflowcostfilamentwindingmachine-外文文獻(xiàn)-資料下載頁(yè)
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【導(dǎo)讀】Sahari,E-mailaddress:(.Sapuan).erentanglesvarying. deliverysystem.erent. .Abdalla,.Mutasher,.Hamouda,.Received2March2020;
【正文】 at room temperature to prevent resin dropping, then after solidification the specimen pulled o? the mandrel and thencut to the required lengths.The relation between winding angle and the speed ofthe screw for mandrel of diameter mm is shown inFig. 8. This has been calculated using the relationsbelowh 188。2prNmVc。 240。1222。where h is the winding angle, r is the Mandrel radius, Nmis the Mandrel speed, VCis the carriage linear velocity.VC188。 NSC2 d。 240。2222。523 4ControllerCCWCWVariable SpeedMotorFig. 7. Control system circuit1 2 3SW4 Limit SwitchDesign 28 (2020) 234–239where NSis the screw speed, d is the screw threaddistance.It has been found [4], especially for angles between0C176 and 90C176, that the pattern is considered as a plete cover of glass on the mandrel. This has been20304050607080900 50 100 150 200 250 300 Screw speed (rpm)Angle of winding (degree)Fig. 8. Winding angle versus screw speed.for the winding machine.two layers. Samples of the final specimens of di?erentdimensions after fabrication and machining are shownin Fig. 9.. Abdalla et al. / Materials and Design 28 (2020) 234–239 239obtained after several passes of the carriage forwardand backward so that one cover will be consistingof 177。U that means one cover is actually consisting ofvessels, pipe lines. Modern winding machines are numerically controlled with higher degrees of freedom for layAcknowledgmentsFig. 9. Specimen fabricated (a) glass fiber, (b) carbon fiber.The authors express their gratitude and sincere appreciation to the Ministry of Science, Technology andInnovation, Malaysia (MOSTI, Project No. 0902040824EA001) for the financial support, and the Department of Mechanical and Manufacturing Engineering ofthe University Putra Malaysia for supporting the groupin undertaking the project.References[1] Gutowski TG. Advanced posites manufacturing. NewYork: Wiley。 1997.[2] Babu MS, Srikanth G, Biswas S. Composite fabrication byfilament windingan insight, 2020. Available from: [3] Hull D, Legg MJ, Spencer B. Failure of glass/polyester filamentwound pipe. Composites 1978.[4] Mallick PM. Fiber reinforced posites, materials, manufacturing and design. 2nd ed. New York: Marcel Dekker, Inc.。1993.ing the exact number of layers of reinforcement.Mechanical strength of the filament wound parts notonly depends on the position of ponent materialbut also on process parameters like winding angle, fibertension, resin chemistry and curing cycle. Good products of di?erent dimensions were produced using thismachine.6. ConclusionIn a filament winding process, a band of continuousresin impregnated rovings or monofilaments is wrappedaround a rotating mandrel and then cured either atroom temperature or in an oven to produce the finalproduct. The technique o?ers highspeed and precisemethod for placing many posite layers. The mandrelcan be cylindrical, round or any shape that does nothave reentrant curvature. Among the applications offilament winding are cylindrical and spherical pressure
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