Relationships between psychometrics, exposure conditions, and vibration power absorption in the hand-arm system.
McDowell-TW; Kashon-ML; Welcome-DE; Warren-C; Dong-RG
11th International Conference on Hand-Arm-Vibration, June 3-7, 2007, Bologna, Italy. Bovenzi M, Peretti A, Nataletti P, Moschioni-G, eds., Bologna, Italy: Associazione Italiana di Acustica, 2007 Jun; :417-424
This study hypothesized that reliable and quantifiable relationships may exist between the vibration power absorbed by a given component of the hand-arm system and the perceived vibration intensity at that component. As a step to test this hypothesis, this study performed a preliminary exploration into relationships among subjects' location-specific psychometric responses, hand-handle coupling conditions, vibration exposure conditions, and vibration power absorption (VPA). The experiment employed 24 human subjects. Two sinusoidal vibration exposure conditions (16Hz, 8.9 m/s2 rms; and 125 Hz, 62.9 m/s2 rms) and two hand actions (20 N grip-only; and a combined 20 N grip and 40 N push) were used in the experiment. A seven-point Likert scale was used to categorize the subjective sensation responses to the vibration exposures. A recently-developed computer model of the hand-arm system was used to predict the VPA distributions at the fingers, the back of the hand, the palm and wrist, the arms, and the shoulder. The correlation between the VP A and the subjective sensation at the corresponding locations was examined. The results of this study suggest that location-specific vibration perception has some association with location-specific VPA.
Vibration-exposure; Vibration; Analytical-processes; Vibration-pickups; Biodynamics; Biomechanical-modeling; Biomechanics; Humans
Bovenzi-M; Peretti-A; Nataletti-P; Moschioni-G
11th International Conference on Hand-Arm-Vibration, June 3-7, 2007, Bologna, Italy