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The image below shows what type of composite reinforcement? 
A{'text': 'Laminar', 'label': 'D'}
B{'text': 'Particulate', 'label': 'C'}
C{'text': 'Continuous (long) fiber reinforced', 'label': 'A'}
D{'text': 'Random (short) fiber reinforced', 'label': 'B'}
Answer & Solution
Correct answer: D. {'text': 'Random (short) fiber reinforced', 'label': 'B'}
Random short-fiber composites show fibers oriented randomly within the matrix, NOT aligned. Mechanical properties are isotropic (similar in all directions) but lower than aligned-fiber composites. Common in injection-molded thermoplastic parts.
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