Influence On Physical Work While Working With Segmental Vibration Inducing Hand Operated Power Tools

摘要

Study evaluates and assesses the work done by vibrating equipments. It includes the assessment of influence of various independent variables associated with hand tools, operators, work & environmental factors on various dependent variables. Three tools selected for study include Rock drill (Dry type) (Tool-1), Concrete breaker (Tool-2), Hand grinder (Tool-3). The impact of vibration exposure on health of operators is assessed by the help of survey. It is found that the human energy expenditure is more in the subjects having low grip strength whereas it is less in the subjects of more grip strength. The subjects having more grip strength show less change in touch sensation. The human energy expenditure of subjects of hand grinder is significantly less than the subjects of rock drill and concrete breaker. The presence of hand arm vibration Syndrome (HAVS) in the subjects under heavy work, like rock drill and concrete breaker found very high.