Investigation on the Vibrating Wire Strain Gauges for the Evaluation of Pipeline Safety in Extreme Cold Region

극한지 파이프라인 안정성 평가를 위한 진동현식 변형률 게이지 연구

  • Kim, Hak Joon (Daejeon University, Dept. of Construction Safety and Disaster Prevention Engineering)
  • 김학준 (대전대학교 건설안전방재공학과)
  • Received : 2016.12.12
  • Accepted : 2016.12.28
  • Published : 2016.12.30


Vibrating wire (VW) strain gauges are widely used for the evaluation of pipeline safety in extreme cold region. The development of VW strain gauges for the low temperature environment is necessary because of the high cost of gauges sold in developed countries. Thermistors embedded in the regular VW strain gauges and PT 100 sensors embedded in the gauges specially manufactured for this study have gone through credibility tests for temperature measurements. The use of PT 100 is recommended at low temperature environments because thermistors have low credibility at temperatures below $-15^{\circ}C$. Strain measurements using regular VW strain gauges also show low accuracies as temperature goes down. VW strain gauges manufactured using inconel give high credibility of strain measurements at low temperatures. More reliable VW strain gauges for the low temperature environment will be developed in the near future.


Grant : 최저 온도하 장거리 배관 건전성 평가기술 개발

Supported by : 국토교통과학기술진흥원


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