Through the research of corrugated steel shear wall in repeated load, the ultimate load-carrying capacity and hysteresis property is found.

Using Young modulus of apparatus, the hysteresis property of tension exerted by steel wire is analyzed, the experimental way and theoretical principle are provided to check the quality of springs.

MnZn ferrite was prepared by hydrothermal method, and its property was described by XRD, hysteresis loop and temperature rise curve.