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Enhanced Strain Measurement Range of an FBG Sensor Embedded in Seven-Wire Steel Strands.
Kim, Jae-Min; Kim, Chul-Min; Choi, Song-Yi; Lee, Bang Yeon.
Afiliação
  • Kim JM; Department of Marine and Civil Engineering, Chonnam National University, Yeosu 59626, Korea. jm4kim@jnu.ac.kr.
  • Kim CM; Department of Civil and Environmental Engineering, Graduate School, Chonnam National University, Yeosu 59626, Korea. kcm0555@nate.com.
  • Choi SY; INNOSE Tech., Incheon 21990, Korea. sychoi@innose.co.kr.
  • Lee BY; School of Architecture, Chonnam National University, Gwangju 61186, Korea. bylee@jnu.ac.kr.
Sensors (Basel) ; 17(7)2017 Jul 18.
Article em En | MEDLINE | ID: mdl-28718826
FBG sensors offer many advantages, such as a lack of sensitivity to electromagnetic waves, small size, high durability, and high sensitivity. However, their maximum strain measurement range is lower than the yield strain range (about 1.0%) of steel strands when embedded in steel strands. This study proposes a new FBG sensing technique in which an FBG sensor is recoated with polyimide and protected by a polyimide tube in an effort to enhance the maximum strain measurement range of FBG sensors embedded in strands. The validation test results showed that the proposed FBG sensing technique has a maximum strain measurement range of 1.73% on average, which is 1.73 times higher than the yield strain of the strands. It was confirmed that recoating the FBG sensor with polyimide and protecting the FBG sensor using a polyimide tube could effectively enhance the maximum strain measurement range of FBG sensors embedded in strands.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2017 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2017 Tipo de documento: Article