Factor of Safety
Ultimate Tensile Stress (5)
- The highest amount of stress a material can withstand.
- This is usually during the Necking Down process.
Factor of Safety
- Since a material should be working at stresses under its breaking point, the Factor of Safety is how much tolerance is given to a material.
- This can be found by:
\begin{align} FoS = \frac{UTS}{\sigma_{max}} \end{align}
Where:
- FoS is the Factor of Safety (ratio)
- UTS is the material's Ultimate Tensile Stress (Pa)
- $\sigma_{max}$ is the maximum stress the material is likely to encounter (Pa)
- Within a system, there needs to be a compromise between a high Factor of Safety and the Efficiency of the system.
- Any system definitely should have a FoS above 1.
page revision: 1, last edited: 19 Apr 2015 18:32