Experimental data collected over the years for defining limits of vibration exposure to human beings have resulted in a set of vibration criteria specified in iso standard 2631. These measurements are taken at the human body or at the vibration source or surface.
Measurement And Evaluation Of Human Exposure To Vibration
Human body vibration exposure and its measurement. Concerned about the vibration workers experience on the job. This paper discusses theoretical measurement and exposure guidelines associated with whole body and hand arm vibration experienced in the mining industry. Well also expand. Measurements of different directions are taken to relate the motion direction with the response of the human body. Join us to learn methods of evaluating human vibration exposure. Hand arm vibration causes damage to hands and fingers.
Simplified mechanical system representing the human body standing on a vertically vibrating platform is found in the 20 to 30 hz region and is causedby the head neck shoulder system fig. Vibrations acting on the human body are called human vibration. The risk of vibration induced injury depends on the average daily exposure. Human body vibration exposure and its measurement. Two categories are distinguished. Vibration exposure is associated with numerous health effects and injury.
The human vibration monitor 100 is a hand held instrument for measuring human exposure to vibration performing relevant calculations and providing overall metrics on its lcd display. From quick assessments to measurement techniques. In this article instrumentation requirements for evaluation of the responses of humans to vibration according to these criteria are described as well as some of the pitfalls to be avoided during these measurements. An evaluation of the risk takes into account the intensity and frequency of the vibration the duration years of exposure and the part of the body which receives the vibration energy. The main purpose of measuring human vibration is the prevention of health risks and the evaluation of comfort for example in vehicles. Whole body vibration measurement human exposure to whole body vibrations should be evaluated using the method defined in iso 2631 11997.
Whole body vibration is applicable to motions transmitted from workplace machines and vehicles to the human body through a supporting surface. Human body vibration exposure and its measurement. Detailed vibration levels are easily stored in its built in data logger which can hold up to 100 separate time history test files including all required metrics. J acoust soc am 736. Measurements are taken with accelerometers to estimate the amount of vibration exposure to the human body. Simplified mechanical system representing the human body standing on a vertically vibrating platform is found in the 20 to 30 hz region and is caused by the head neckshoulder system fig.
Gallery of Human Body Vibration Exposure And Its Measurement
