•
Details of the vibration source:
- Technical description of the machine
- Type and Model
- Age and maintenance condition
- Weight of hand-held part or tool
- Vibration reduction measures, if applicable
- Type of handle
- Automatic controls (e.g. torque control)
- Power rating
- Revolution speed, number of blows
- Type of used tools
•
Measuring equipment:
- Instrument and sensor types, serial numbers
- Traceable calibration
- Date of last calibration
- Results of function check
•
Measuring conditions:
- Measuring points and directions (sensor axes) with dimensional drawing
- Mounting method of the sensor
- Weight of the sensor
- Operating condition
- Arm and hand posture, left / right handed
- Other data (e.g. hand pressure force)
•
Measuring results:
- Frequency weighted interval RMS values of acceleration a
wx
, a
wy
and a
wz.
for three
orthogonal directions, preferably for each activity
- Measuring duration for each activity
•
Results for daily exposure A(8):
- Vibration total values for each activity
- Duration T
i
of vibration exposure for each activity
- Partial exposure A
i
(8)
- Daily exposure A(8)
- Assessment of measurement uncertainty
5.3. Whole-Body Vibration Measurement with the VM30-H
This section will give you basic instructions for the measurement and evaluation of whole-body
vibrations based on the standard ISO 2631 and the guideline VDI 2057, Part 1. Please consult
the original documents for detailed explanations.
The described method is suitable for all vibrations acting on the human body. It is not suited for
vibration containing occasional shocks and for impacts, like car crashes. Vibrations transmitted
via the hands have been described separately in the previous section.
5.3.1. Measuring points for Whole-Body Vibration
Whole-body vibration is usually measured with seat pad accelerometers. These are triaxial
piezoelectric sensors built into a flat rubber pad which adapt themselves to the interface between
the vibration source and the test person.
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