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http://dx.doi.org/10.9720/kseg.2016.4.583

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

Kim, Hak Joon (Daejeon University, Dept. of Construction Safety and Disaster Prevention Engineering)
Publication Information
The Journal of Engineering Geology / v.26, no.4, 2016 , pp. 583-591 More about this Journal
Abstract
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.
Keywords
vibrating wire strain gauge; pipeline safety; thermistor; PT 100;
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Times Cited By KSCI : 1  (Citation Analysis)
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