Abstract
In this research, we propose the new measurement method of contact stiffness of the joint with different material combination based on the former established method for the joint with same material combination. As the results, we enabled to measure the real contact area of the joint with various material combinations considering the reflected level of ultra-sonic wave at the real contact area. Moreover, we enable to obtain the contact stiffness of single-joint interface from the contact stiffness of double-joint interface.
