Which risk increases adjacent to aircraft surface scratches because?

💡 Explanation

Crack propagation risk increases due to *stress concentration*. Existing scratches create points where stress intensifies during flight. This overcomes fracture toughness because the crack-tip stress exceeds the material threshold for breaking atomic bonds, therefore crack extends rather than blunting.

• Which outcome results when uneven cooling causes microscopic cracks within a rapidly quenched glass lens?
• Which consequence results when high humidity compromises deicing salts?
• Which risk increases during a Carnot engine cycle?
• Which risk increases because of cation vacancies in perovskite solar cell lattice?
• Which outcome maximizes energy transfer when AC voltage drives a loosely coupled transformer?
• Which risk increases significantly when graphene sheets debond?