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Which statement about bolted composite joints is TRUE?

  • A.Composites yield locally more readily than metals
  • B.Edge distance is unimportant
  • C.Hole quality does not affect strength
  • D.Load cannot be evened between fasteners by local yielding

Answer: D

A composite is essentially elastic to failure, so the peak predicted by an elastic analysis is what the joint actually sees. Edge distance and hole quality both matter a great deal, the latter because drilling can delaminate the laminate at the exit face.

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