Discussion
Consider the following statements about aircraft materials and joints:
1. Aluminium alloys offer a good balance of specific strength, cost and repairability.
2. Riveted joints can be inspected and repaired fastener by fastener.
3. Bonded joints are always preferred because they are lighter.
Which of the statements given above is or are correct?
Answer: D
The first two are correct. The third ignores the practical account: bonding avoids the holes and can be lighter, but inspection and repair are far harder, so the two methods coexist rather than one displacing the other.
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