What is Geometric Dimensioning and Tolerancing (GD&T)?

You may have across some obscure looking symbols on engineering drawings (that’s “blueprints” for you *cough cough* “seasoned” engineers and technicians) that look something like this: This ladies and gentlemen is a feature control frame – a GD&T Feature Control Frame. This bad boy does wonders in terms of saving us cash () and locking …

What is the von Mises stress?

In mechanical design, or structural design, the all most important thing to consider is failure. Rather, how to prevent design failure. As design engineers, we are all too familiar with the stress-strain curve: Our eyes automatically go to the , which represents the yield stress point of the material. That is, the point at which …