Host: The Japan Society of Mechanical Engineers
Name : Dynamics and Design Conference 2019
Date : August 27, 2019 - August 30, 2019
In this research, I confirmed the accuracy of vibration mode measurement of copper plate for application measurement of time-averaged pulse strobe digital holography interferometry. Laser displacement meter and time-averaged pulse strobe digital holographic interferometry were used to confirm the accuracy of the amplitude quantity. Time-averaged pulse strobe digital holography interferometry can record the maximum displacement of vibration and can visualize the displacement state by using a light chopper with a duty ratio of 50%. The test piece is fixed in a cantilevered manner, and the vibration mode is excited by direct vibration by the vibrator. The displacement of this method was compared with the displacement of the laser displacement meter to confirm the vibration measurement accuracy of this method. The vibration modes of the copper plate were measured from the first to fifth modes. As a result of comparing each measurement data, a difference of about 0.5 μm occurred at the maximum.
