D bmi resins are commonly used for automotive

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d)BMI resins are commonly used for automotive applications.8.a)Phenolics are formed by the reaction between phenol and ethylene glycol.b)The formation of phenolics is a condensation process where alcohol is thecondensate.c)Compared to epoxy resins, phenolics have low shrinkage.d)Compared to epoxy resins, phenolics have higher temperature resistance.9.a)In carbon/carbon composites, carbon fibers are mixed in bulk carbonmatrix.b)Carbon/carbon composites are most often made from carbon fiberreinforced epoxy.c)Carbon/carbon composites have the highest energy absorption (specificheat capacity) than any known material.d)Carbon/carbon composites are not used very much due to poor bondingbetween carbon fiber and carbon matrix.10.a)For advancedthermoplastic composites, the thermoplastic matrix isusually polyethylene, polypropylene, or nylon.2
b)For advanced thermoplastic composites, the thermoplastic matrix resin isusually polyetheretherketone,or polyphenylene sulfide.c)The advantage of thermoplastic composites over thermoset composites isthat thermoplastic composites have less void content as a result ofmanufacture.d)The disadvantage of thermoplastic composites as compared to thermosetcomposites is that thermoset composites have higher fracture toughness.11.
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12.Which of the following fibers has orthotropic properties?
13. In making a part made of carbon fiber/epoxy composites using an autoclave, whichof the following materials should be used for the mold, in terms of matching coefficientof thermal expansion?a) Aluminumb) Steelc) Cast Irond) Carbon/epoxy composite
14.When setting the filament winding parameters such as the wind angle, the dwellangle, the band width, the resin formulation, the tension in the fibers etc, which of thefollowing parameters can be changed without affecting the performance of the product?

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Term
Fall
Professor
Dr. S.V. Hoa
Tags
Composite material, Isophthalic resins

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