Harvard engineers have demonstrated a new 3D printing technique that allows the arrangement of short fibers in the printed material to be finely tuned. The spinning printer head gives the technique ...

Many products have pin connections to let parts open, close, turn, and swing. Simulating these assemblies using traditional finite-element techniques, however, takes a great deal of time and ...

The first article in this series examined a pseudo-ideal gear reducer to demonstrate that free play between adjacent parts becomes lost motion Precision gear reducers typically exhibit less than 10 ...