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Metal-Matrix Composites
compared with steel. Ductile superconductors have been fabricated with a matrix of copper and superconducting filaments of niobium-titanium. Copper reinforced with tungsten particles or aluminum oxide particles is used in heat sinks and electronic packaging. Metal-Matrix Composites | Machine Design. Skip
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Fibers
as laminates, with the continuous fibers at various angles to one another. In between chopped and continuous fibers are the recently introduced long-fiber-reinforced composites, which are available with either carbon or glass-fiber reinforcement. In these compounds (ICI Advanced Materials and Polymer
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More metal parts go to composites
such as high-performance composites made from polyimides, epoxies, fluoropolymers, and phenolics reinforced with woven, braided, or chopped graphite, carbon, glass, and aramid fibers. Advancements in these raw material forms provide designers a balance of price, processibility, and performance. For years
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Reinforced Plastics Make Metals Look Weak
-reinforced materials have recently replaced metal in many aerospace, sporting good, and industrial applications. The first and most well known are made from thermosets. Parts made from these composites are lighter and more corrosion resistant than metals. They also form more easily into complex shapes
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Polyimide composites challenge metals
preload. Here, a polyimide composite manufactured from a fiber-reinforced sheet-molding compound addresses the problem. Fiber alignment in SMCs is more random than in laminates made from plies of X-Y woven fabric. Because randomness increases the amount of Z-aligned fibers within the part, SMCs tend
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Stronger and Lighter -- Composites Make Their Mark
over such traditional materials as steel, aluminum, cast iron, and granite. Mention composites and engineers tend to think of carbon-reinforced epoxy and glassfiber- reinforced polymers (polyester, vinyl ester, and nylon). However, composites fall into four key classes: PMCs, metal-matrix composites
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Ceramic-Matrix Composites
that the approaches used by the carbon-carbon community, such as applying various CVD coatings to seal off the fibers, may result in near-term solutions for improving toughness of fiber-reinforced ceramics. In whisker-reinforced materials, the matrix usually seals off the interface region from the composite
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Airbus Researchers Are Bullish On Composite Application
, the challenger to the 787 and the next step in the company's development project. The A350 would use much of the technology Airbus is employing on the A380 mega-transport, including carbon fiber reinforced plastics (CFRP). But Airbus officials note that metal makers are being very cost-competitive, so use