抄録
This paper describes the non-contacting measuring method of the circumferential vibration of gears by using the double-aperture method, in which a coherent laser beam is directed perpendicular to the side face of the tested gear, and the scattered reflected light is passed through two small apertures and the resultant interference stripes are directly detected with a photo-multiplier to measure the vibration in real time. It was found that the circumferential vibration due to the engagement of gear teeth can be measured by this method with the same accuracy as that by the traditional strain gage method.
