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Match each cut-out design measure in List I with the problem it addresses in List II.

List I

A. Generous corner radius

B. Doubler plate

C. Heavy edge member

D. Tear strap beyond the opening

List II

1. Restoring the section the opening removed

2. The stress concentration at the corner

3. Arresting a crack that starts at the cut-out

4. Carrying the diverted load along the edge of the opening

Select the correct match.

  • A.A-1, B-2, C-4, D-3
  • B.A-2, B-4, C-1, D-3
  • C.A-3, B-1, C-4, D-2
  • D.A-2, B-1, C-4, D-3

Answer: D

The four measures work together rather than separately: the radius lowers the peak, the doubler and edge member carry the diverted load, and the tear strap accepts that a crack may still start and confines it when it does.

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