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Showing 1 to 18 of 18 for “"composites manufacturing"”.
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Minimizing uncertainty in cure modeling for composites manufacturing
The degree of cure and temperature are consistent variables used in models to describe the state of material behaviour development for a thermoset during cure. Therefore, the validity of a cure kinetics model is an underlying concern when combining several material models to describe a part forming …
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Breaking the Mold: Using Automated Design to Accelerate Composites Manufacturing
Re:Build Manufacturing’s member company, Composite Resources (CR), is a thermoset composites manufacturer primarily serving aerospace and defense customers. Composites manufacturing is an industry primarily differentiated on quality and lead times. Customers are innovative and value rapid …
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A Decision Support System for Advanced Composites Manufacturing Cost Estimation
The increased use of advanced composites in aerospace manufacturing has led to the development of new production processes and technology. The implementation of advanced composites manufacturing technology is poorly served by traditional cost accounting methods, which distort costs by using …
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Lyocell Fiber-Reinforced Cellulose Ester Composites-Manufacturing Considerations and Properties
Biodegradable thermoplastic composites were prepared using high modulus lyocell fibers and cellulose acetate butyrate (CAB). Two reinforcement fiber types: fabric and continuous fiber tow were used. Fabric had advantages of uniform alignment and easier processing, but lacked the use as a …
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Development of Vacuum Assisted Composites Manufacturing Technology for Wind Turbine Blade Manufacture
… the technique of resin infusion and develops a manufacturing process to allow a small wind turbine blade to be manufactured in a single process complete with its internal structure. An innovative manufacturing method for creating three-dimensional internal structures within composite components …
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On the appropriate level of automation for advanced structural composites manufacturing for commercial aerospace applications
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1990 and, Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1990.
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Functionally Graded Fiber-Reinforced Cementitious Composites---Manufacturing and Extraction of Cohesive Fracture Properties Using Finite Elements and Digital Image Correlation
A novel four-layer functionally graded fiber-reinforced cementitious composite (FGFRCC) as a beam component has been fabricated using extrusion and pressing techniques. The FGFRCC features a linear gradation of fiber volume fraction through the beam depth. The bending test shows the enhanced …
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A Method for Winding Advanced Composites of Unconventional Shapes using Continuous and Aligned Fibers
<p>Advanced composites are extremely strong, rigid, and light, even when compared with advanced metals. Advanced composites are replacing high-tech metals as the material of choice for aerospace engineering. However, the processes used to manufacture advanced composites generally lose some of the …
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Design and development of a high-altitude, in-flight-deployable micro-UAV
… operate (between 30,000 and 80,000) and for manufacturing considerations. Detailed design of aircraft components is presented with a discussion of small-scale composites manufacturing processes. Folding and control mechanisms were developed to actuate control surfaces on a swinging wing. The …
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Fundamental Behavior of Nanoporous Networks in the Out-of-Autoclave Manufacturing of Carbon Fiber Reinforced Polymer Composites
… carbon fiber reinforced polymer (CFRP) laminated composites are used extensively in spacecraft and aircraft vehicles due to their high specific strength and stiffness and other properties. Processing these advanced structural CFRP composites, especially in prepreg form, is often completed via …
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Bioinspired microvascular self-healing in polymers and composites
… materials, particularly fiber-reinforced polymer composites, to recover fracture resistance over consecutive damage-heal cycles. A serendipitous outcome of the research is the ability to provide multi-functional properties such as active cooling, magnetic modulation, and electrical reconfiguration …
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Characterisation of Halogen Free Fire Retardant Polypropylene Composites Reinforced by Short Natural Fibres
… last few decades have diverted the focus of the composites manufacturing industry towards replacing synthetic fibres with their natural counterparts. However, the limited thermal stability of natural fibres, which leads to degradation during processing mostly beyond 200⁰C, restricts the mass …
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Manufacturing of thermosetting polymers and composites using frontal polymerization: A numerical study
… Yet, the wider use of highperformance thermoset composites is limited by the complexity and cost of the fabrication process, which usually requires the monomer to be cured at high temperatures (around 180oC) for several hours under combined external pressure and internal vacuum. Curing is …
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Synthesis, characterization and modeling of interphases created between titanium dioxide nanotubes and various layers in biological, physical and mechanical systems
… to apply, the dependency on a great number of manufacturing parameters require deep understanding and control on the whole fabrication process. Until the moment, a great difficulty has been encountered in applying this method on titanium for large scale applications (e.g. in mechanical systems …
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Fabrication of Graphene-Based Composites via High-Pressure Homogenisation and Their Characterisation
… for fabricating graphene and graphene-based composites. Two polymers with vastly different properties, polyamide 12 (PA12) and polyetherimide (PEI), are used to create polymer graphene masterbatches with graphene contents up to 50 wt%, subsequently mixed into raw polymer at graphene contents …
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Process Development for Compression Molding of Hybrid Continuous and Chopped Carbon Fiber Prepreg for Production of Functionally Graded Composite Structures
… with faster processing compared to traditional manufacturing methods. This experimental compression molding capability was developed for the ME composites lab using unidirectional carbon fiber prepreg composites. A direct comparison was drawn between autoclave and compression molding methods to …
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Direct Ink Writing of Functional Fiber/Granular Composites
<p>Direct ink writing provides a versatile manufacturing route for fabricating functional fiber and granular composites with controlled architecture, tunable interfaces, and customized material distributions. Fiber reinforced composites offer high stiffness, strength, fatigue resistance, and …