Measurement and Evaluation of Hand-Transmitted Vibration－Case of Push-Type Compactors

• Main Authors: Chuan-Juri Lu, 呂權叡
• Other Authors: Wei-Hsin Gau
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/61294809358343126601

碩士 === 華梵大學 === 機電工程學系博碩專班 === 99 === In this investigation, the hand-transmitted vibration of the push-type compactor is measured and evaluated by using the method of spectrum analysis. It is in accordance with the international standards ISO 5349「Mechanical Vibration－Measurement and evaluation of human exposure to hand-transmitted vibration」. Measure directions of the handgrip position of the operator are defined and frequency responses and 1/3 octave are measured in the defined directions to evaluate the transmitted vibration from the compactor. Soil properties included the density of soil, dry density, and water content of soil are defined and examined on the effect of the hand-transmitted vibration. Effects of the velocity of compactor, operators with or without gloves, and users with or without shoes on the hand-transmitted vibration are also studied in this investigation. Effects of the hand-transmitted vibration on the vibration-induced white finger (VWF) are discussed. The value of daily vibration exposure can be expressed in terms of the 8-h energy-equivalent frequency-weighted vibration total value. Values of the daily vibration exposure in the operation of the compactor in the cases of different properties of soil and different velocities of compactor are obtained. Vibration exposure for predicted 10 % prevalence of vibration-induced white finger for a given number of years is discussed. Keywords: Value of daily vibration exposure, Push-type compactor, Hand-transmitted vibration, One-third-octave band, Vibration-induced white finger