Metal Fatigue: The Quiet Crack That Ends Airframes

Chapters

1. 00:00The Silent Killer
2. 00:2089,680 flight cycles
3. 00:39How Fatigue Works
4. 00:59The Repetitive Strain of Flight
5. 01:15From Microscopic to Catastrophic
6. 01:36Fatigue is the progressive, localized, permanent
7. 01:57The Day the Sky Opened
8. 02:15The fuselage failure... was the result of fatigu
9. 02:32How Cracks Hide
10. 02:48A Wake-Up Call
11. 03:04The Unseen Enemy
12. 03:26Inside Out Failure
13. 03:44The fuselage failure was the result of fatigue c
14. 04:03The Hidden Crack
15. 04:26The SSIP Mandate
16. 04:48Finding the Invisible
17. 05:09Cracks can be missed
18. 05:31Designing for Cracks
19. 05:50The Cycle Count
20. 06:11The Aging Fleet
21. 06:2850,000 cycles
22. 06:45A New Hope
23. 06:59Inspect, inspect, inspect.
24. 07:14The Fatigue Curve
25. 07:38The Rivet Hole
26. 08:04The Crack Growth Curve
27. 08:30The Inspection Interval
28. 08:58The Corrosion Factor
29. 09:26The Human Factor
30. 09:54The Quiet Enemy

About this video

Metal fatigue is the quiet crack. Cycles of pressurization and flex grow microscopic damage until a panel or spar fails far below its original design load. From Aloha's convertible 737 to inspection regimes that catch cracks early, this is how airframes age — and why "safe life" and damage-tolerant design exist. Educational materials science for aviation. #aviation #metalfatigue #engineering

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