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| Failure Mechanisms | |||||||||||||||||||
| Fatigue
Considerations in Design
· Aircraft are light weight structures and components such as the gas turbine engines are subjected to high stresses during use. The shown JT8D fan hub fatigue failure on an MD-88 occurred on the ground. |
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| · The failure by fatigue cracking, attributed to metal property changes produced when the hub tie-rod holes were drilled, split the fan-hub into three sections. | |||||||||||||||||||
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| From:
Aviation Week and Space Technology,
March 31, 1997 |
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