We propose a method for measuring the impact force of a spherical body dropping onto a
water surface. The velocity of the center of gravity of a metal spherical body, in which a cube …

This work presents an optical technique for evaluating the mechanical properties of a
tungsten wire under conditions of impact tensile loading. The wire experiences impact …

A novel method for estimating acceleration directly from the digitized waveform of
interference signals is proposed based on a laser Doppler interferometer. In this method, a …

This work presents and discusses a method for evaluating a dynamic eddy-current damping
(ECD) force that is automatically generated in response to eddy currents induced within a …

The electro-mechanical characteristics of piezoelectric actuators which have being driven
are evaluated in this paper. The force generated by actuators is measured as an inertial …

Drop ball test by the Levitation Mass Method (LMM) was carried out on a plastic sheet made
of PMMA. Impact response of PMMA was measured with high accuracy and accurately …

A dual beat-frequencies laser Doppler interferometer which can measure high speed back
and forth motion is proposed and demonstrated. In this interferometer, the two frequencies, f …

A method for measuring the dynamic impact responses that acting on a spherical object
while dropping and colliding with dried sand, such as the velocity, displacement …

A method of inexpensive material tester based on the levitation mass method is improved.
The tester is composed of an interferometer with Zeeman type two frequency He-Ne laser …

A method for evaluating the dynamic characteristics of force transducers against small and
short-duration impact forces is developed. In this method, a small mass collides with a force …