Xu Xueyan S, Riley Danny A, Persson Magnus, Welcome Daniel E, Krajnak Kristine, Wu John Z, Raju Sandya R Govinda, Dong Ren G
National Institute for Occupational Safety and Health, Morgantown, WV, USA.
Biomed Mater Eng. 2011;21(4):193-211. doi: 10.3233/BME-2011-0669.
Gloves with anti-vibration features are increasingly used to reduce impact vibrations or shocks transmitted to the hands of power tool operators. Selection and evaluation of the glove materials are important steps in the designs of such gloves. In the current study, we proposed an approach to objectively evaluate the effectiveness of the glove materials using a rat-tail impact model. As a critical part of a systematic investigation, we examined the vibration reduction characteristics of typical resilient glove materials (air bladders and viscoelastic gels) and the impact vibrations transmitted to the rat tail. A special test platform that mimics impact tool vibrations was constructed and used in the experiment. A scanning laser vibrometer was used to measure the vibration at points across the platform surface under several different test conditions. The peak acceleration was found to be greatly attenuated by the glove materials, especially by using strips from a gel-filled glove. The rat tail was found to effectively absorb the high-frequency vibration. However, the glove materials and the rat tail did not reduce the frequency-weighted acceleration. The implications of the experimental results are discussed.
具有抗振功能的手套越来越多地用于减少传递到电动工具操作员手部的冲击振动或震动。手套材料的选择和评估是此类手套设计中的重要步骤。在当前的研究中，我们提出了一种使用鼠尾冲击模型客观评估手套材料有效性的方法。作为系统研究的关键部分，我们研究了典型弹性手套材料（气囊和粘弹性凝胶）的减振特性以及传递到鼠尾的冲击振动。构建了一个模拟冲击工具振动的特殊测试平台并用于实验。使用扫描激光测振仪在几种不同测试条件下测量平台表面各点的振动。发现峰值加速度被手套材料大大衰减，尤其是使用填充凝胶手套的条带时。发现鼠尾能有效吸收高频振动。然而，手套材料和鼠尾并没有降低频率加权加速度。讨论了实验结果的意义。
