Discussion
Assertion (A): Composite compression panels are often sized by compression after impact.
Reason (R): Barely visible impact damage can cut compressive strength by forty per cent.
Select the correct answer from the options below.
Answer: D
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the sizing logic. Damage that leaves almost no mark on the surface can still delaminate the interior and cut compressive strength by around forty per cent, and since it cannot be relied on to be found in service, the structure must be assumed to carry it. Compression after impact therefore becomes the governing case for most composite panels.
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