The goal of this study was to assess the level of vibration in an walking-type cultivator, and to provide a basic information to manage the vibration exposure for farmers. The latent periods of vibration-induced white finger (VWF) were assessed through analyzing the vibration levels and frequency characteristics. Also, vibration acceleration levels based on the daily vibration exposure duration was suggested. The latent periods of vibration-induced white finger were assessed by ISO 5349 method. The latent periods were 4.5 and 10.1 years at 10% and 50% of farmer group, respectively. Also, under ACGIH (American Conference of Governmental Industrial Hygienists) standard, daily vibration exposure duration at 6.7 m/s2 of vibration acceleration has to be less than 4 hours. Therefore, education that maximum working hours should be less than 4 continuous hours is necessary for the operators of walking-type cultivators.
목차
Abstract 1. 서론 2. 연구 방법 2.1 연구 대상 2.2 실험 절차 및 장비 2.3 실험 방법 2.4 국소진동 측정ㆍ평가 및 노출기준 3. 결과 3.1 주파수별 특성 및 가속도 값 3.2 ISO 5349 기준에 따른 국소진동 노출 평가 3.3 ACGIH 기준에 따른 국소진동 노출 평가 3.4 진동 피해 방지 대책 4. 요약 및 결론 5. 참고문헌