Study of vibration transmission on a paver's hand hammer

Authors

  • Uwe Kaulbars Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung (IFA), Germany
  • Nastaran Raffler Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung (IFA), Germany

Keywords:

Tools, Power machines, Self motion, Synchronous measurements, Vibration exposure, Vibration transmission

Abstract

A study of vibration transmission on a Paver's hand hammer was conducted to examine whether the vibration exposure was comparable with that of other power machines or tools. The interaction between hand and handle was determined during the discrete impact phases by synchronous measurement of the acceleration at the handle of the hammer and of the coupling forces. Measurements were performed with the same paving hammer originally used by the individual who had suffered the disease. The recordings by the high-speed camera show the transmission of the shock into the wrist, which is accompanied by a rotating/tilting motion. The entire hammer exhibits a clear tilt movement in the x direction, which is in the direction of impact, with values of 9.4 to 17 Hz. At over 650 Hz, the hammer handle is subject to a self-motion independent of the hammer peen.

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Published

2011-06-01

How to Cite

1.
Kaulbars U, Raffler N. Study of vibration transmission on a paver’s hand hammer. Canadian Acoustics [Internet]. 2011 Jun. 1 [cited 2021 Oct. 25];39(2):52-3. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2353

Issue

Section

Proceedings of the Acoustics Week in Canada