There are two main sources of vibration in a machine: transmission of motive force to the machine, and its actual activity — whether cutting, stamping, or otherwise. Vibrations are magnified when ...

The Superjumbo jet will take off weighing more than 1.2 million lb. But every pound carries a premium. Even the laminated shims got scrutinized for weight. (Laminated shims are ultrathin sheets used ...