L. Burstrom et R. Lundstrom, PORTABLE EQUIPMENT FOR FIELD MEASUREMENT OF THE HANDS ABSORPTION OF VIBRATION ENERGY, Safety science, 28(1), 1998, pp. 15-20
Citations number
9
Categorie Soggetti
Engineering, Industrial","Operatione Research & Management Science
Risk assessments for hand-transmitted vibration, according to internat
ional Standard ISO 5349, are based solely on the acceleration level me
asured directly on the vibrating surface. An alternative method could
be to measure the quantity of vibration transmitted to and absorbed by
the operator. These types of measurements have until now only been po
ssible to conduct in laboratory environments using specially-designed
handles. The aim of the present project has therefore been to develop
portable equipment for field measurements of the hand's absorption of
vibration energy. The developed equipment consists of a hand-held adap
ter placed in the contact area between the hand and the vibrating surf
ace. The adapter is equipped with transducers for measurement of vibra
tion and dynamic forces. For the force measurements, four different te
chnical solutions were tested. An adapter, equipped with a triaxial pi
ezo-electric force transducer as well as piezo-electric accelerometers
, was found to be the most suitable solution for field measurements. T
he adapter is small, has a low weight and can be used for measurement
on tools with different handle designs. The adapter has been tested by
laboratory measurements and reliable and accurate measurement results
were obtained within the frequency range of 3 to 1900 Hz, for all the
three orthogonal directions in accordance with ISO 5349. (C) 1998 Els
evier Science Ltd. All rights reserved.