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2024
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09
Reasons for aging and wear of aviation components
Possible reason: During long-term use, aviation accessories may be affected by environmental factors such as temperature, humidity, and ultraviolet radiation, leading to a gradual decline in material properties and aging.
Natural aging:
Possible reason: During long-term use, aviation accessories may be affected by environmental factors such as temperature, humidity, and ultraviolet radiation, leading to a gradual decline in material properties and aging.
Impact: Natural aging may reduce the strength, elasticity, sealing and other performance of accessories, increasing the probability of failure.
For example, airplane tires that are exposed to sunlight and air for a long time will gradually age and become harder, reducing grip and wear resistance, and increasing the risk of tire blowouts.
Wear and tear:
Possible reason: During the operation of aviation components, they may be subjected to mechanical effects such as friction, impact, and vibration, resulting in surface wear. For example, sliding parts of aircraft engines and shock absorbers of landing gear may experience wear and tear after long-term use.
Impact: Wear and tear may reduce the dimensional accuracy of accessories, increase the fit clearance, and affect the performance and safety of the aircraft. Severe wear and tear may also lead to component failure and cause accidents.
For example, after the bearings of an aircraft engine wear out, it may lead to unstable engine operation and even jamming.
Fatigue damage:
Possible reason: Aviation components may experience fatigue damage when subjected to cyclic loads such as impact during takeoff and landing, engine vibration, etc. Fatigue damage is usually formed due to the gradual expansion of microscopic defects within the material.
Impact: Fatigue damage may reduce the strength of accessories, and they may suddenly break after reaching a certain level, causing serious accidents.
For example, after long-term exposure to flight loads, fatigue cracks may occur in aircraft fuselage structural components. If not detected and treated in a timely manner, it may lead to structural damage to the fuselage.
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