Abstract
This paper presents a technique for detection and measurement of vibrations especially in machine design. This technique makes use of a He–Ne laser and has decisively an edge over the conventional methods, which have certain limitations regarding their vibration measurements due to their contact nature. However, in the present study, the method used is a non-contact one. In this case, the measurements include variation of voltage amplitude with rotor speed and variation of vibration frequency with rotor speed. Calibration studies are also conducted.
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