Patents Assigned to Japan Atomic Energy Research Insittute
  • Method of detecting a change in the property of a rubber member
    Patent number: 5999004
    Abstract: The electrical impedance of a dumbbell-shaped rubber sheet (1) is measured, and the deterioration of the dumbbell-shaped rubber sheet (1) is detected from the result of the measurement. The present invention relates to a method of detecting a change in the property of a rubber member or a rubber member of a rubber bearing, such as a change in the shape or dimensions thereof, a change in the state of the stress and strain thereof, deterioration thereof, and the like.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: December 7, 1999
    Assignee: Japan Atomic Energy Research Insittute
    Inventors: Yoshinao Okawa, Youichi Akutsu, Ikuo Shimoda, Masayoshi Ikenaga