High-speed impact test using an inertial mass and an optical interferometer.
Rev Sci Instrum
; 84(7): 075116, 2013 Jul.
Article
in En
| MEDLINE
| ID: mdl-23902115
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.
Full text:
1
Database:
MEDLINE
Language:
En
Journal:
Rev Sci Instrum
Year:
2013
Type:
Article
Affiliation country:
Japan