公开(公告)号：US09791335B2

公开(公告)日：2017-10-17

申请号：US15025334

申请日：2014-09-30

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Il-Bum Kwon ,  Joo Eun Im ,  Mi Hyun Kim ,  Ki Sun Choi

IPC: G01B11/16 ,  G01L1/24 ,  G01B1/00 ,  G01D5/353

CPC classification number: G01L1/246 ,  G01B1/00 ,  G01B11/16 ,  G01B11/165 ,  G01B11/18 ,  G01D5/353 ,  G01D5/35316 ,  G01D5/3537

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.