Question about a brittle material with a flaw

[stinlin]

Would the graph of a brittle steel with a flaw in it (from load 0 to sharp-notch strength, or SNS) somewhat resemble a graph of f(x) = (e^x) - 1? I know this seems like a weird question, but I'm analyzing some data gathered at the lab, and I can't seem to make sense of it.

 

[Astronuc]

How much plastic/permanent deformation does the test achieve.

Are the uniform and total elongation close?

With a large enough flaw, I would expect failure might occur before UTS, and maybe even before YS is achieved.

 

[piercas]

It is difficult to accurately answer this question without more context and information about the specific material and flaw being studied. However, in general, the graph of a brittle material with a flaw may not necessarily resemble the graph of f(x) = (e^x) - 1. This is because the behavior of a brittle material with a flaw is dependent on various factors such as the type and size of the flaw, the material's composition and properties, and the applied load.

Additionally, the graph of f(x) = (e^x) - 1 represents an exponential function, which may not accurately reflect the behavior of a brittle material with a flaw. The mechanical properties of a material are typically described by a stress-strain curve, which may have a different shape and behavior than an exponential function.

It is important to carefully analyze and interpret the data gathered in the lab and consider all relevant factors in order to make sense of the results. Consulting with a materials expert or conducting further experiments may also be helpful in understanding the behavior of the brittle material with a flaw.