Patents by Inventor JOO EUN IM

JOO EUN IM 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).

  • FBG sensor for measuring maximum strain, manufacturing method and using method
    Patent number: 9791335
    Abstract: The present invention relates to an FBG sensor for measuring a maximum strain of an object being measured, a method for manufacturing the sensor, and a method of using the sensor. To this end, provided is the FBG sensor for measuring a maximum strain, comprising: an optical fiber (130) having an FBG sensor (150) therein; a first metallic foil (120) contacting the optical fiber (130) on one surface thereof; a second metallic foil (120) which comes into surface-contact with the one surface; an adhesive layer (140) provided between the first and second metallic foils (100, 120); a means for measuring a residual strain of the first and second metallic foils (100, 120) through the FBG sensor (150); and a means for calculating a maximum strain on the basis of the measured residual strain and a sensitivity coefficient (Csen) obtained through experimentation.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: October 17, 2017
    Assignee: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE
    Inventors: Il-Bum Kwon, Joo Eun Im, Mi Hyun Kim, Ki Sun Choi
  • FBG SENSOR FOR MEASURING MAXIMUM STRAIN, MANUFACTURING METHOD AND USING METHOD
    Publication number: 20160216166
    Abstract: The present invention relates to an FBG sensor for measuring a maximum strain of an object being measured, a method for manufacturing the sensor, and a method of using the sensor. To this end, provided is the FBG sensor for measuring a maximum strain, comprising: an optical fiber (130) having an FBG sensor (150) therein; a first metallic foil (120) contacting the optical fiber (130) on one surface thereof; a second metallic foil (120) which comes into surface-contact with the one surface; an adhesive layer (140) provided between the first and second metallic foils (100, 120); a means for measuring a residual strain of the first and second metallic foils (100, 120) through the FBG sensor (150); and a means for calculating a maximum strain on the basis of the measured residual strain and a sensitivity coefficient (Csen) obtained through experimentation.
    Type: Application
    Filed: September 30, 2014
    Publication date: July 28, 2016
    Inventors: IL-BUM KWON, JOO EUN IM, MI HYUN KIM, KI SUN CHOI