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In composite design, BALANCED laminate means:
A{'text': 'Same number of plies in all directions', 'label': 'A'}
B{'text': 'For every ply at angle +θ there is an identical ply at angle −θ — eliminating shear-extension coupling', 'label': 'B'}
C{'text': 'Equal thickness on both sides', 'label': 'C'}
D{'text': 'No fiber breakage', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'For every ply at angle +θ there is an identical ply at angle −θ — eliminating shear-extension coupling', 'label': 'B'}
Balanced laminate: paired ±θ plies cancel each other's shear-extension coupling, so axial loads don't induce in-plane shear distortion. Required for stable response under tensile load.
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