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A laminate is built from \( 16 \) plies of \( 0.125 \) mm nominal thickness. Its cured thickness is

  • A.0.5 mm
  • B.2.0 mm
  • C.1.6 mm
  • D.4.0 mm

Answer: B

Correct answer: 2.0 mm

\[ 16 \times 0.125 = 2.0\ \text{mm.} \] The nominal cured ply thickness is a design constant for a given material and process, which is what makes laminate thickness a discrete quantity: it can only be changed a ply at a time. Adding or dropping plies in symmetric pairs is therefore the usual way of tailoring thickness across a part.

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