Change of spring constant for springs with corrosion

The purpose of this article is to investigate the change of the spring constant with springs subjected to corrosion. We have used in our investigation 12 tension coil springs. We have determined the spring constant using the measurement of natural frequency of spring-mass system and high accuracy measurement of the spring mass with electronic analytical balance. We have done processing of the springs in corrosion environment using an accelerated method for electro-chemical corrosion setting the springs under maximally identical conditions. After their processing in this corrosion environment, we have determined again the spring constant of the springs. We have presented to you the results in a form of a scheme. We have analysed the obtained results and have made conclusions about the change of the spring constant of the springs.