Uwe Kaulbars

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Over the past three decades, it has been known that long-lasting and intense hand-arm vibrations (HAV) can cause serious diseases, such as the Raynaud- / White Finger-Syndrome. In order to protect workers nowadays, the long-term use of tools such as a drill, grinder, rotary hammer etc. underlie strict legal regulations. However, users rarely comply with(More)
Hand-held fastener driving tools (nailers, staplers, pinners) differ considerably from other vibrating tools in terms of mode of vibration. For satisfying the requirements of the Machinery Directive 89/392/EEC, including also the compulsory declaration of a characteristic vibration value, appropriate measuring methods had to be developed. The measuring(More)
Coupling forces at the interface of the hand-arm system and the vibrating tool have a substantial effect on the actual vibration exposure. The paper presents a method for the qualitative assessment of coupling forces. This method--presently under discussion in the form of a draft standard within DIN (1) and ISO (2)--is mainly based on the results of a joint(More)
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