Investigation of the relationship between vibration emission and in-use vibration for electrical tools
Keywords:Accelerometers, Acoustic surface wave devices, Core drilling, Drills, Grinding (machining), Hammers, Health risks, Machine vibrations, Tools, Cutting operations, Field data, Hand-arm vibration, Operating modes, Piezo-electric accelerometers, Reproducibilities, Single-axis, Test code
AbstractThe repeatability and reproducibility of the BS EN 60745 series of test codes for tools that are considered to represent the greatest health risk from hand-arm vibration exposure such as hammers, angle grinders, saws and drills, is described. Triaxial hand-arm vibration measurements were made at the prescribed hand locations on each tool using three single axis piezoelectric accelerometers bolted to a mounting block. Data for hammers in a chiseling or breaking application were obtained. The results show that all HSL data displayed are triaxial. and that field data include both grinding and cutting operations. Operating mode of the tool, such as drill II is capable of drilling metal, dry diamond core drilling, and impact drilling concrete, producing emissions of 2.2-15.9m/s2. Orientation of the tool during use such as hammers, produced about 30% more measured vibration when drilling vertically compared to drilling horizontally.
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