Patents by Inventor Byeong-Hwa Kim

Byeong-Hwa Kim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for evaluating prestressing force of bonded tendon using velocity of stress waves caused by impact
    Patent number: 9329095
    Abstract: There is provided a method for evaluating prestressing force of a bonded tendon. The method includes: striking a prestressing strand of a bonded tendon with an impact hammer; measuring an acceleration response signal from the prestressing strand using an accelerometer, and receiving the acceleration response signal with a data logger; and calculating stress wave velocity based on the acceleration response signal received by the data logger, and evaluating prestressing force of the bonded tendon, based on the calculated stress wave velocity, using a controller.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: May 3, 2016
    Assignee: Korea Electric Power Corporation
    Inventors: Jung-Bum Jang, Byeong-Hwa Kim, Hong-Pyo Lee
  • METHOD FOR EVALUATING PRESTRESSING FORCE OF BONDED TENDON USING VELOCITY OF STRESS WAVES CAUSED BY IMPACT
    Publication number: 20140238150
    Abstract: There is provided a method for evaluating prestressing force of a bonded tendon. The method includes: striking a prestressing strand of a bonded tendon with an impact hammer; measuring an acceleration response signal from the prestressing strand using an accelerometer, and receiving the acceleration response signal with a data logger; and calculating stress wave velocity based on the acceleration response signal received by the data logger, and evaluating prestressing force of the bonded tendon, based on the calculated stress wave velocity, using a controller.
    Type: Application
    Filed: June 8, 2012
    Publication date: August 28, 2014
    Applicant: KOREA ELECTRIC POWER CORPORATION
    Inventors: Jung-Bum Jang, Byeong-Hwa Kim, Hong Pyo Lee