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High-speed impact test using an inertial mass and an optical interferometer
Author(s)
Jin, T.
Watanabe, K.
Prayogi, I. A.
Takita, A.
Mitatha, S.
Djamal, M.
Jia, H. Z.
Hou, W. M.
Fujii, Y.
Date Issued
July 1, 2013
Type
Article
Abstract
A high-speed impact testing method for evaluating mechanical properties of materials is proposed using an inertial mass and a dual beat-frequencies laser Doppler interferometer (DB-LDI). In this method, an inertial mass levitated using an aerostatic linear bearing is made to collide with the material being tested at a high initial velocity. During the collision, the velocity of the mass, which is even higher than the critical velocity (±0.56 m/s) defined by the frequency difference of the Zeeman laser, is accurately measured using the DB-LDI. The position, acceleration, and impact force of the mass are calculated from the measured velocity. Using the proposed method, the mechanical properties of a visco-elastic material under a high-speed impact loading condition can be accurately evaluated. © 2013 AIP Publishing LLC.
Citation
Review of Scientific Instruments, 84(7), 2013