Fatigue strength of vascomax 350

[araanandv2]

Hi,

I need to calculate the fatigue strength of vascomax 350 material.
I have referred Machine design Hand book, Author-Shigley
The data provided and example calculation is for material having Ultimate strength less than 200ksi.
The Ultimate strength of vascomax 350 is 350ksi .

Please help me calculating the fatigue strength for the material.

Mainly I require the true stress at fracture (σ'F) for the material.

Thanks,

Ana

 

[nucleus]

Here is one site that gives information.
http://danvils.com/VascoMaxC.pdf

 

[oswaler]

Hello Ana,

The fatigue strength of a material is its ability to withstand repeated stress cycles without failure. In order to calculate the fatigue strength of vascomax 350, we need to first understand the material's stress-strain behavior under cyclic loading. This can be done by conducting fatigue testing on samples of the material.

Once we have the stress-strain data for vascomax 350, we can use the Goodman diagram or the S-N curve method to determine the fatigue strength. The Goodman diagram plots the alternating stress (S) against the mean stress (S') and the point where the line crosses the S-S' axis gives us the fatigue limit, which is the maximum stress the material can withstand without failure.

Alternatively, the S-N curve method plots the number of stress cycles (N) against the stress amplitude (S) and the point where the curve flattens out gives us the fatigue limit.

In either case, the fatigue strength of vascomax 350 can be calculated by finding the stress value at which the material will not fail after a certain number of stress cycles. This value is known as the endurance limit and is usually expressed in terms of stress amplitude.

As for the true stress at fracture (σ'F), it can be determined by conducting tensile tests on the material until failure and then using the stress-strain data to calculate the true stress at the point of fracture.

I hope this helps in your calculations. Good luck with your research on vascomax 350!

Best,