Abstract
In this article, the author describes the problem with low frequency vibrations in the range of 0–100 Hz and how exposure to these vibrations could affect human health when working in dangerous environments. For this research, vibrations in the range of 0–30 Hz were studied as this frequency range has the largest impact on human health and such vibrations usually occur when operating excavators, forklifts or Melex vehicles. Workers who are exposed to these vibrations usually work in a seated position for many hours. Over time, exposure to dangerous vibrations in the working environment will cause damage to the human spine, resulting in a great deal of discomfort for the worker. In order to alleviate the pain, the worker will tend to shift their seating position away from the correct position, which further compounds the issue. The author proposes the use of a 3D knitted seat mat in order to reduce the amplitude of any harmful vibrations. This will provide better ergonomic conditions for the user and will reduce the effects of low frequency vibrations.