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Showing 1 to 18 of 18 for “"filament winding"”.
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Modeling of Thermoplastic Composite Filament Winding
Thermoplastic composite filament winding is an on-line consolidation process, where the composite experiences a complex temperature history and undergoes a number of temperature history affected microstructural changes that influence the structure's subsequent properties. These changes include …
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Modelling of the filament-winding fabrication process
A stress model of the filament-winding fabrication process, previously implemented in a finite element program, was improved. Pre- and post-processing codes were developed to make the program easier and more efficient to use. A program which is used to design filament wound composite rocket motor …
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Automated Manipulation for the Lotus Filament Winding Process
<p>The filament-winding process produces quality consistent composite parts for many industries. Filament winding allows for consistent quality parts by automating the winding process. A recent development of filament winding is the Lotus process. The Lotus process reverses conventional filament …
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Accuracy-speed relationships of a robotic filament winding cell.
… research and the development of a robot based filament winding cell. The cell was implemented using an industrial robot (ASEA IRB 6/2) and an in-house mandrel drive mechanism, both being coordinated by a personal computer. Filament winding is a process in which continuous fibres are placed on a …
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Finite element modeling of the filament winding process using ABAQUS
A comprehensive stress model of the filament winding fabrication process, previously implemented in the finite element program, WACSAFE, was implemented using the ABAQUS finite element software package. This new implementation, referred to as the ABWACSAFE procedure, consists of the ABAQUS software …
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Molding and filament winding of spatially graded material properties through computational design
… multi-material molding and casting and crafted filament winding, this processes allows for the gradation of material properties in a low cost and fast process. Then, I applied this method to two design scenarios, a mid-sole for a running shoe and a prosthetic socket for trans-tibial amputees. …
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Finite element modelling and analysis of composite flywheel disk including effects of filament-winding mosaic pattern
A filament-wound spinning composite disk is characterised by the mosaic-patterned configuration of the layers produced during a filament-winding process. In this structure, each helically wound layer consists of curved triangular-shaped units alternating in the radial and circumferential …
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A Method for Winding Advanced Composites of Unconventional Shapes using Continuous and Aligned Fibers
… qualities of the composite materials in tact is filament winding. Filament wound parts are used as rocket shells, bicycle frame tubes, drive shafts, pressure vessels, etc. Filament winding is an automated process and makes reliable parts to close tolerances. If a straight tube were to be made by …
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Parameter establishment and verification of a fabrication stress model and a thermo-kinetic cure model for filament wound structures
… together have the capability to model the filament winding and curing processes for composite structures. The "Filament Winding Cure" (FWCURE) code is a thermo-kinetic model. FWCURE models the resin viscosity, percent of cure, temperature, resin flow, and layer location. As these …
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The continuous curing process for thick filament wound composite structures
… is supplied, for instance by tape laying or filament winding. The cure is initiated from one side by an external heat source after a small initial thickness has been built up. A cure front, which is the idealization of a thin reaction region, forms and propagates outwards as material lay-up …
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Durability and mode-I fracture of fiber-reinforced plastic (FRP)/wood interface bond
… timber beams) and wood cores wrapped with FRP by filament winding (being investigated for reinforced railroad wood crossties and utility wood poles). First, the service performance and durability of FRP-wood interface bond is evaluated using a modified ASTM delamination test. Second, the apparent …
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Finite Element Modeling of Tow-Placed Variable-Stiffness Composite Laminates
… tow paths can be formed in a manner similar to filament winding. The result is a laminate with spatially varying stiffness and response. This manufacturing method can also result in overlap regions between adjacent tow paths. In previous research, a closed-form solution was developed to …
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Winding and curing stress analysis of filament wound composites by finite elements
Filament wound composite structures are becoming more and more attractive to designers in the aircraft and aerospace industries due to increasing strength- and stiffness-to-weight ratios and falling fabrication costs. However, the interaction of some of the manufacturing process variables such as …
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On-Line Consolidation of Thermoplastic Composites
… system, which includes a computer-controlled filament winding machine and a consolidation head assembly, has been designed and constructed to fabricate composite parts from thermoplastic towpregs. A statistical approach was used to determine the significant processing parameters and their …
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Energy Absorption of Metal-FRP Hybrid Square Tubes
… by the manufacturing techniques (i.e. filament winding) and thickness (as an example of physical constraints).
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Energy Absorption Capacity of Graphite-Epoxy Composite Tubes
… 12k fiber. Using the towpreg, sixteen tubes were filament wound on aluminum mandrels. Three specimens were cut from each of these tubes for a total of forty-eight specimens. Twenty-four of these specimens were crushed statically in a load frame and twenty-four were crushed dynamically in a drop …
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Axial compressive behaviour of FRP-confined high-strength concrete
… with specimens manufactured through an automated filament winding technique exhibiting improved compressive behaviour over companion specimens manufactured through a manual wet layup technique. In addition to this, the influence of fibre type was examined with an improvement in compressive …
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Influence of process parameters and manufacturing defects on the properties of thermoplastic composite pipes.
… are the matrix. Current techniques such as the filament winding and automated tape laying or placement used in the industry are facing challenges with on-the-spot detection in a continuous manufacturing system. In TCP manufacturing process, the pipe is regularly monitored. When a defect is …