Hand-Arm System

 TITLE ABSTRACT
Identification of Behavior of Anti–Vibration Gloves by ARMAX Model In the literature many researches propose models of biodynamic responses of the human hand arm system to identify mechanical characteristics. The Authors suggest a method for the time domain identification of modal parameters of a vibrating structure using Z–transformation sequences. This identification proceeds using the Z–transfer function of a vibrating structure coming from the ARMAX model of the vibrating structure. The modal parameters can be identified by this ARMAX model in time domain data. To demonstrate the application and efficiency of the method, it is proposed a test on human hand and arm exposed to mechanical vibrations. [DOI:10.12866/J.PIVAA.2013.09.001]
Analysis of Driving–Point Mechanical Impedance of the Human Hand Arm System This research proposes a synthesis of the measured values of human male hand–arm impedance characteristics, reported in the literature. The driving point mechanical impedance data of the human hand–arm, grasping a vibrating handle, has been compared to highlight the various similarities and differences among the data. The DPMI response of the hand–arm system has been measured in many studies, under controlled test conditions. Considerable differences exist among the data reported by different investigators. The dependence of the impedance response on various intrinsic and extrinsic variables, including the frequency and the direction of vibration, the grip and push forces, the vibration amplitude and individual characteristics, has been widely inestigated in the reported studies. It is proposed an effort to systematically quantify the influences of many of these factors.[DOI:10.12866/J.PIVAA.2013.12.001]
Estimation of effects of type and size of rivet guns on hand–arm vibration by Tukey’s Honestly Significant Difference Test
Operation of hand held power tool results in exposure to hand–arm vibration, which over time lead to many health complications. We propose a methodology to evaluate protective equipment and working techniques for the reduction of vibration exposure. The methodology consists of a statistical approach to investigate the effects of rivet guns on hand–arm vibration. The statistical approach is composed of two parts: the One–Way ANOVA and a pairwise comparison technique, proposed by Tukey under the name of the honestly significant difference (HSD) test. [DOI:10.12866/J.PIVAA.2015.01.02]