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Solar Resistant Optical Fiber and Method
or plastic buffer or jacket is applied in chamber 24 to the hermetically sealed, hydrogen diffused continuous fiber 22. The jacketed fiber product 26 is then fed to take up reel 28 in the usual manner. With reference to FIGS. 2 and 3, optical fiber 26 includes the hydrogen diffused fiber 18
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Superstrong nuts and bolts
polymer matrix called PEEK, from Victrex USA Inc., Greenville, S.C. (victrex.com), also has a melting point of 649 F, a glass-transition temperature of 289 F, and a continuous-use temperature of 500 F. According to Chris Karas, spokesperson for the resin supplier, "CFM feeds the pultruded composite rods
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What new analysts should know about composites
and flows to form a continuous matrix of resin and fiber. Other fabrication techniques include: Hand layup of fiber in a cloth or weave over a mold, which then has resin manually applied. Filament winding wraps material around a mandrel with individual fibers bathed in resin. This can be a simple
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Polyester
polyethylene carrier films. Uniformity of SMC materials is closely controlled, making these materials especially suited for automated production. Structural SMCs contain up to 65% glass in continuous, as well as random- fiber orientation. This compares with ~O to 35% glass, in random orientation
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Direct-bond bearings challenge inserts
limits exceeding 53,000, and continuous service temperatures to 675 F are possible. Direct-bonded bearings also tend to better withstand chemical attack and foreign particles than their insert counterparts, and they won't dislodge in use. The high-strength, nonabrasive qualities of bonded bearings
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Acrylic
available are 120 144 in., in thicknesses from 0.030 to 4.25 in. Continuous cast material is supplied as flat sheet to in. thick, in widths to 9 ft. Acrylic sheet cast by the continuous process (between stainless-steel belts) is more uniform in thickness than cell-cast sheet. Cell-cast sheet
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Actuators that mimic nature
of the length at room temperature, and is less than or equal to 10% at 60 C. Continuous use at greater than 60 C is not recommended because the rubber elastomer ages prematurely. However, the actuator can handle temperatures above 60 C for short periods of time (several seconds). It also withstands
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Tips for no-melt machining
It's relatively easy to machine advanced plastic stock shapes, but you have to know what you're doing. EDITED BY JEAN M. HOFFMAN Semiconductor-equipment manufacturers machine advanced plastic stock shapes such as this fully imidized thermoset polyimide (PI) into wafer clamp rings. With a continuous