Influence of two positions for measuring instrument adapter on measurement of hand-transmitted vibration in grinding machine
10.3760/cma.j.issn.1001-9391.2016.06.006
- VernacularTitle:两种测量仪适配器佩戴位置对砂轮机手传振动测量的影响
- Author:
Xiaoshuang XIE
1
;
Min ZHANG
;
Yingdong ZHENG
;
Xieyi DU
;
Cheng QI
Author Information
1. 中国疾病预防控制中心职业卫生与中毒控制所
- Keywords:
Vibration;
Hand-transmitted vibration;
Measurement;
Intraclass correlation coefficient
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2016;34(6):426-429
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the influence of two positions for measuring instrument adapter on the measurement of hand-transmitted vibration in grinding machine using the intraclass correlation coefficient (ICC) of reliability assessment index,and to provide a basis for studies on the measurement standard for handtransmitted vibration.Methods With reference to the measurement standard for hand-transmitted vibration ISO 5349 Mechanical vibration-Measurement and evaluation of human exposure to hand-transmitted vibration-Part 1:General requirements and Mechanical vibration-Measurement and evaluation of human exposure to handtransmitted vibration-Part 2:Practical guidance for measurement at the workplace,the domestic AWA5936 hand-transmitted vibration measuring instrument and SVAN-106 hand-transmitted vibration measuring instrument from Poland were used to measure hand-transmitted vibration in 3 workers for grinding machine in a foundry for 5 days continuously from September to October,2014,and Y-axis data were recorded and compared.Results In worker A,the "T"-shaped adapter had a significantly higher mean Y-axis accelerated speed effective value than the "O"-shaped adapter [4.34 m/s2 (95％CI 4.05-4.63) vs 2.32 m/s2 (95％CI 2.27～2.38),t=13.781,P＜0.01]-In workers B and C,AWA5936 "U"-shaped adapter (placed at the position of the handle of grinding machine) had lower degrees of data variation of 12.55％ and 15.77％,respectively,suggesting good data stability.The measurement results showed significant differences across different positions of adapter(P＜0.01) and between all adapters except "O"-shaped and line-shaped adapters (all P＜0.01),while the measurement results showed no significant differences between the"O"-shaped and line-shaped adapters (P＞0.01).The comparison of the measurement results of AWA5936 vibration measuring instrument with an "U"-shaped adapter and SVAN-106 vibration measuring instrument with an "S"-shaped adapter showed an ICC of ＞0.80 (ICC=0.82),while the comparison of the measurement results of AWA5936 vibration measuring instrument with an "O"-shaped adapter and SVAN-106 vibration measuring instrument showed an ICC of ＜0.40.Conclusion SVAN-106 vibration measuring instrument with an "S"-shaped adapter placed at the palm and AWA5936 vibration measuring instrument with an"U"-shaped adapter placed at the handle of grinding machine can give comparable measurement results with good reliability.
