Abstract
This paper describes the measuring method of the viscoelasticity on the human body. In order to realize this method, we used the self-exited vibration generated by the positive feedback of velocity. This method could measure time-varying dynamic stiffness on body surface. Then we showed that the elastic material constant and the viscous material constant on the human body, which did not depend on measurement conditions, could be quantified from a spring constant and a viscous damping coefficient using Hertz's formula and the correspondence principle between the theory of elasticity and viscoelasticity.
