Sometimes, engineers lack all the necessary information. Boundary conditions might be unclear or incomplete material properties. These voids can set off uncertainty about the reliability of the analysis, frequently bringing about what people term ‘analysis paralysis..’
The solution is simple. Some engineers may say, “I can’t proceed without this data.” While they have a point, halting work isn’t always possible. Projects must move forward, even if the results aren’t perfect.
So, what can we do? We work with the available tools and information. Analysis is only an approximation of reality, and perfection isn’t the goal.
If a specific material property is missing at a certain temperature, you can make an educated estimate. You can use existing data to interpolate or extrapolate, or compare your material to a similar one and make an informed guess. Although this method won’t provide exact data, it can be adequate to keep the project on track. I’m not suggesting that we rely on guesswork; rather, the goal is to develop a method to get the necessary numbers, document it, and move forward.
Norman T. Neher, P.E.
Analytical Engineering Services, Inc.
Elko New Market, MN
www.aesmn.org