The VibroMetâ„¢ Multiple Beam Laser Doppler Vibrometer (MB-LDV) is an easy-to-use, non-contact instrument capable of simultaneously measuring vibrations at Multiple locations on a target, with extremely high sensitivity. The laser beam of the scanning laser doppler vibrometer is deflected by 2 mirrors which are controlled by the computer. A camera inside the head delivers the picture of the object under test. On this picture the measurement points can be arranged like with a CAD software. After the setup of points the measurement is done automaticly by the computer.
Since all points are measured at the same time, transient events can be accurately measured. In addition, the relative phase between measurement locations can be used to generate modal vibration patterns in a single shot. This capability is superior to single beam scanning methods and necessary when measuring temporary, non-stationary responses during interrogation. Another significant advantage, when compared to single beam scanning methods, is the faster inspection time of the multi-beam LDV system. It is the only scanning multibeam laser Doppler vibrometer available.