Laboratory for Dynamics of Machines and Structures
A Multi-Axis Biodynamic Measuring Handle for a Human Hand-Arm System
L. Knez,
J. Slavič and
M. Boltežar
Journal of Mechanical Engineering, Volume 59, Issue 2, FEB 2013, Pages 71-80
The biodynamic response method is increasingly being used to study the human hand-arm system
and vibration-induced injuries that affect the hand. Most measurements are made in the dominant forearm direction
of excitation, but recently research has turned to multi-axis measurements as well as excitation. This study looks
at a new instrument handle that measures the biodynamic responses at the palm and the fingers in multiple directions
and, at the same time, removes the need to stop the test and change the orientation of the handle. In addition to the
biodynamic response, the sensors inside the handle are able to measure the static push and grip forces simultaneously
and therefore remove the need for an additional force plate or force sensor at the handle base, which is typically used
to measure the push force. The apparent mass of the handle was measured in order to determine the usable frequency range
of the system. Additionally, the apparent mass distribution along the hand was investigated and it was found that the apparent
mass distribution along the hand varies with frequency.
  Ladisk, Fakulteta za strojništvo, Univerza v Ljubljani
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