caa a22 4500 463193784 CHVBK 20180406164916.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s00420-007-0190-3 doi (NATIONALLICENCE)springer-10.1007/s00420-007-0190-3 Hand vibration: non-contact measurement of local transmissibility [Elektronische Daten] [Lorenzo Scalise, Francesco Rossetti, Nicola Paone] Objectives: Grip and push forces required for the use of vibrating tools are considered important influencing inputs for the assessment of hand-vibration transmissibility (TR). At present TR measurements are usually referred to the palm of the hand The aims of the present paper are: to present an original measurement procedure for non-contact assessment of the transmissibility of fingers; to report TR data measured on six points of the hand of nine subjects; to correlate TR with: grip, push, hand volume and BMI. Methods: Tests have been carried out using a cylindrical handle mounted on an shaker. A laser Doppler vibrometer is used to measure the vibration velocity. Push force is measured using a force platform, whereas grip force is measured using a capacitive pressure sensor matrix wrapped around the handle. Tests have been conducted on nine healthy subjects. Proximal and distal regions of the second, fourth and fifth fingers have been investigated. Tests were carried out using a push force of: 25, 50 and 75N. The excitation signal was a broadband random vibration in the band 16-400Hz with un-weighted rms acceleration level of 6m/s2. Results: Results show how in general TR values measured on distal points are higher respect to the proximal points. A resonance peak is present for all the measured points in the band 55-80Hz. ANOVA analysis showed that TR is not significantly dependent on: BMI, hand volume and push force alone. While TR is significantly dependent on: grip force alone, measurement positions and grip and push force together. Conclusions: The proposed procedure shows the advantage to allow local vibration measurement directly on the fingers without the necessity to apply any contact sensor. Results demonstrate how the transmissibility is significantly different on the point where the acceleration is measured. Springer-Verlag, 2007 Hand vibration nationallicence Laser Doppler vibrometry nationallicence Transmissibility nationallicence Scalise Lorenzo Dipartimento di Meccanica, Università Politecnica delle Marche, Via Brecce Bianche, 12, 60122, Ancona, Italy aut Rossetti Francesco Dipartimento di Meccanica, Università Politecnica delle Marche, Via Brecce Bianche, 12, 60122, Ancona, Italy aut Paone Nicola Dipartimento di Meccanica, Università Politecnica delle Marche, Via Brecce Bianche, 12, 60122, Ancona, Italy aut International Archives of Occupational and Environmental Health Springer-Verlag 81/1(2007-10-01), 31-40 0340-0131 81:1<31 2007 81 420 https://doi.org/10.1007/s00420-007-0190-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00420-007-0190-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Scalise Lorenzo Dipartimento di Meccanica, Università Politecnica delle Marche, Via Brecce Bianche, 12, 60122, Ancona, Italy aut NATIONALLICENCE 700 1- Rossetti Francesco Dipartimento di Meccanica, Università Politecnica delle Marche, Via Brecce Bianche, 12, 60122, Ancona, Italy aut NATIONALLICENCE 700 1- Paone Nicola Dipartimento di Meccanica, Università Politecnica delle Marche, Via Brecce Bianche, 12, 60122, Ancona, Italy aut NATIONALLICENCE 773 0- International Archives of Occupational and Environmental Health Springer-Verlag 81/1(2007-10-01), 31-40 0340-0131 81:1<31 2007 81 420 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer