This International Standard specifies general methods for data acquisition and processing concerning hand-transmitted vibrations induced by portable hand-held, combustion engine brush-saws for use primarily in forestry. The methods are valid irrespective of how the brush-saw is operated during the test, for example, whether it is hand-held or fitted in a st?nd, and whether it is cutting or not.
This International Standard specifies an operator hand-held procedure for acquisition of vibration data from portable brush-saws.
NOTES
1 The hand-arm system exerts an influence on the hand-transmitted vibration, and different hands and grips exert different influences. Therefore, the development of a standardized stand for holding the saw during the measurement is in progress.
2 The measurements in the three axes should be made at, or clearly related to, the surface of the hands where the energy enters the body. As the hands of the person are in direct contact with the vibrating surface of the hand grip, the transducer should be fastened to the vibrating structure.
This International Standard is primarily intended for user and manufacturer purposes.
NOTE 3 — For definitions of terms relating to portable brush-saws, see ISO 7112［1］.