Equipment Racks & Earthquakes

Seismic-restrained Isolators The following is an edited response from ChatGPT. Resonant response of the equipment rack circuit boards should not be an issue, because circuit board fundamental frequencies are typically above 200 Hz, whereas seismic energy is mostly below 20 Hz. But electronic components may… Read more

Hospital Vibration Environments for Medical Devices

  An engineer recently asked me to recommended a vibration test level for his device, which would typically be mounted on a hospital table, including surgical tables. Well…  shock would almost certainly be worse than vibration, particularly if the device were somehow accidentally dropped on… Read more

Isolator Photo Gallery

SCUD-B Typical Avionics Component The avionics shelves were made from hardwood. The wooden fibers may provide better damping then, say, an aluminum shelf. A possible disadvantage of wood is that the shelf would be unable to serve as an electrical or thermal ground plane. The… Read more