Vibrometers are used to measure the amplitude, frequency, and phase of vibration. They can be used to measure vibration on a variety of surfaces, including solids, liquids, and gases. Vibrometers come in a variety of types, including:
* Displacement vibrometers measure the displacement of a surface in the direction of vibration.
* Velocity vibrometers measure the velocity of a surface in the direction of vibration.
* Acceleration vibrometers measure the acceleration of a surface in the direction of vibration.
2. Accelerometers
Accelerometers are used to measure the acceleration of a surface. They are similar to vibrometers, but they only measure acceleration. Accelerometers are often used to measure vibration on machinery and equipment.
3. Seismographs
Seismographs are used to measure the motion of the ground during an earthquake. They are similar to accelerometers, but they are designed to measure very low-frequency vibrations.
4. Strain gauges
Strain gauges are used to measure the strain on a surface. They are often used to measure the strain on a building or bridge during an earthquake.
5. Laser vibrometers
Laser vibrometers use a laser to measure the vibration of a surface. They are non-contact instruments, which means that they do not need to be in contact with the surface to be measured. Laser vibrometers are often used to measure the vibration of objects that are difficult to reach or that are moving.