Laser Vibrometer
Laser vibrometers are widely used nowadays in many industrial applications. Just like the laser leveling and distance measurement tools manufactured by companies such as David White, these tools use a laser beam to measure the vibration of any given object. However, unlike laser leveling tools, laser vibrometers can make measurements on a moving object unlike its other cousins that can only measure distances by pointing a laser and firing it in a strait line at a wall.
The Doppler Effect
The measurements done by these vibrometers are based greatly on the principles of the Doppler Effect. In theory, the Doppler Effect is a change in the frequency of a transmitted laser as it is bounced back from the target to the emitter. This is an automatic reaction. The Doppler theory also states that the frequency shift is always in proportion with the target's velocity. The frequency shift is referred to as the Doppler frequency. The theory further expounds that as the object is moving closer toward the source of the laser, the shift is greater. The shift decreases only when the object is moving away from the source.
This is how these vibrometers are used. They measure the vibrational velocity spectra of a given moving object relative to the movement of the source of the laser beam such as LV-5 used. The Two Types of Laser Vibrometers There are two kinds of laser vibrometers: the torsional and the translational vibrometers. Translational laser Doppler vibrometers, also known as linear vibrometers, are used in mechanical engineering applications. They are typically used to measure vibrations from rotating parts, as well as in quality control and product testing instances. On the other hand, torsional or angular vibrometers are used in the design and troubleshooting of rotating machinery. Applications The vibrometers are typically used in test situations where the test target is impossible to physically access in order to test its vibrations. Because of its use of a laser beam, these tools are perfect for such situations that require absolutely no contact with the subject. They are also called transducers, but they are different from the transducers manufactured by Trimble that are used to measure the depth of ground from a given location because they do not use lasers to make their measurements. One of the applications of the vibrometers is the calibration of golf clubs. Specific golf clubs have specific velocities produced that influence the distance achieved when striking a ball. This is what the golfer uses to judge as to which club it will use when faced with a predicament during the game. The vibrometers are used to determine if the final product produces just what it is expected to give. The electronic industry also makes use of these laser vibrometers. Specifically, they are used to determine the actual frequency response of flat panel loud speakers. They are used in favor of conventional vibrometers because it has been determined that non-contact transducers give more actual results. Setting up the laser vibrometer for this application is also quicker compared to setting up conventional ones.
Privacy Policy And Terms Of Use
| 
