VIBRATIONS TRANSMITTED TO WORKERS IN JOINERIES IN THE SOUTH OF ESPÍRITO SANTO STATE

Abstract

This research was developed in joineries in the south of the Espírito Santo State (Brazil) and aimed to quantify the vibrations transmitted to workers system hand-arm by the machines in the activities of furniture production. The data were collected by using an accelerometer model NK 20 and a meter of vibration model NK 300. The vibration was measured in agreement with the three orthogonal coordinates defined in ISO 5349-1 and explained by the ME Good Practice Guide HAV, following the orientations of Directive 2002/44/ EC of the European Union. The data were submitted to variance analysis in the entirely casualized experimental design. The averages of the machines were compared by Scott-Knott’s test at 5% probability. The smoother presented the largest vibration index in the orthogonal coordinates (fatigue area) and the sander the smallest vibration indexes (comfort area). The statistical analysis of the averages showed that a good correlation exists between the classification models and the one of analysis of the vibration indexes.