Presentation of the Dehavilland Comet crash due to metal fatigue

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SUMMARY

The discussion centers on the Dehavilland Comet crash, specifically analyzing the role of metal fatigue using the Paris law equation. The user, Louis, encountered a significant discrepancy in calculating the number of cycles the fuselage endured, arriving at 1.272*10^33 instead of the expected 1272. Forum members suggest that such a large error likely stems from unit miscalculations or incorrect operations in the formula. They recommend posting the specific formula and input values for more precise assistance.

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siuolleboss479
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Hi,
I need some help,
I want to do a presentation of the Dehavilland Comet crash due to metal fatigue and want explain what caused this with a Paris law equation.
So I watched this video: https://shorturl.at/xlUp4
The goal is to find the number of cycles that the fuselage went through during its lifetime before it torn off. In my case I find 1.272*10^33 instead of 1272 in the video, how can I explain it? I put the link going to the exact timeline of the video so you can understand what i'm talking about.
Here's the video of me trying to resolve it on the calculator:
Good day,
Louis
 
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Welcome to PF.
siuolleboss479 said:
The goal is to find the number of cycles that the fuselage went through during its lifetime before it torn off. In my case I find 1.272*10^33 instead of 1272 in the video, how can I explain it?
Is it only the 10^33 exponent that is a problem with your calculation?
 
Not many people are going to spend their time trolling through the videos, so you are more likely to get helpful answers if you post the formula (use Latex!) and the input values you used.

But even though I'm not going to sit through the videos, an error that is both enormous and an exact power of ten usually means that you messed up your units or multiplied/divided somewhere when you should have divided/multiplied. Because 30 is equal to six times five, I would be especially suspicious of any input that is raised to the fifth power.