Discussion
Assertion (A): Thermoplastic composites allow welded joints where thermosets do not.
Reason (R): A thermoplastic matrix softens on reheating rather than curing irreversibly.
Select the correct answer from the options below.
Answer: A
Both are true and the second explains the first. Fusion bonding avoids both fasteners and adhesives, which is a significant attraction, though the higher processing temperatures and limited service history have slowed adoption in primary structure.
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