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A WHISKER in composite-materials terminology is:
A{'text': 'A matrix-only material', 'label': 'D'}
B{'text': 'A long-fiber bundle', 'label': 'C'}
C{'text': 'A very thin organic coating', 'label': 'A'}
D{'text': 'A single-crystal fiber of extremely small diameter and high aspect ratio (typical L/d > 100) with near-theoretical strength', 'label': 'B'}
Answer & Solution
Correct answer: D. {'text': 'A single-crystal fiber of extremely small diameter and high aspect ratio (typical L/d > 100) with near-theoretical strength', 'label': 'B'}
Whiskers are single-crystal fibers, free of grain boundaries and most defects, with strengths approaching the theoretical limit (~E/10). SiC, Si₃N₄, Al₂O₃ whiskers are used in MMC and CMC for high-performance applications.
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