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Among "fiber forms" used to lay up composites, common formats include:
A{'text': 'Only continuous tow', 'label': 'A'}
B{'text': 'Only individual filaments', 'label': 'C'}
C{'text': 'Only powder', 'label': 'D'}
D{'text': 'Continuous TOW (untwisted bundle), YARN (twisted), ROVING (parallel tows), WOVEN FABRIC (cloth), MAT (random), PREPREG (resin-impregnated layer)', 'label': 'B'}
Answer & Solution
Correct answer: D. {'text': 'Continuous TOW (untwisted bundle), YARN (twisted), ROVING (parallel tows), WOVEN FABRIC (cloth), MAT (random), PREPREG (resin-impregnated layer)', 'label': 'B'}
Fibers ship in many formats. Tow/roving for filament winding and pultrusion. Woven fabric for hand layup. Mat for sprayed FRP. Prepreg (resin-impregnated) is the aerospace standard — pre-mixed plies cured under autoclave heat and pressure.
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