Abstract: “Bolts have a significant impact the function of a wide range of mechanisms and often cause serious accident if applied incorrectly. Beyond lab tests, there has been no system available to accurately and cost effectively measure axial bolt loads during production and maintenance. This paper deals with the development of such a system. Axial load will be investigated by measuring the deformation of a bolt with a shank reamed concentrically using the calculations and by measuring the displacement of a fluid in void of the shank to determine the change in volume.”

Keywords: screw, bolt, axis force, fluid, safety