Browse > Article
http://dx.doi.org/10.7843/kgs.2009.25.10.31

Temperature Compensation on the Cone Tip Resistance by Using FBG Temperature Transducer  

Kim, Rae-Hyun (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
Lee, Jong-Sub (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
An, Shin-Whan (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
Lee, Woo-Jin (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.25, no.10, 2009 , pp. 31-40 More about this Journal
Abstract
As the measurement of strain-gage type cone penetrometer is influenced by the temperature change during penetration, the temperature is a factor producing an error of the cone tip resistance. In this study, the 0.5 mm diameter temperature transducer and 7 mm diameter micro cone penetrometer are manufactured by using FBG sensors to evaluate the effect of temperature on the cone tip resistance. Design concepts include the cone configuration, sensor installation and the temperature compensation process. The test shows that the tip resistance measured by strain gauge is affected by the temperature change. The error of the tip resistance increases with an increase in temperature change, while the temperature effect on the tip resistance of FBG cone is effectively compensated by using FBG temperature transducer. Temperature compensated tip resistance of the strain gauge cone shows the good matched profile with FBG cone which performs real-time temperature compensation during penetration. This study demonstrates that the temperature compensation by using FBG sensor is an effective method to produce the more reliable cone tip resistance.
Keywords
FBG sensor; Initial zero reading; Micro cone; Temperature compensation; Temperature effect;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 김래현, 윤형구, 이우진, 이종섭 (2008), "콘 관입시험기의 온도 보상에 대한 실험연구", 2008 대한토목학회 정기학술대회, pp.958-961
2 Gornall, W. and Amarel, T. (2003), Applications and Techniques for Fiber Bragg Grating Sensor Measurements, EXFO Bureligh Products Group Inc., NY.
3 Kersey, A. D., Davis, M. A., Patrick, H. J., LeBlanc, M, Koo, K. P., Askins, C. G., Putnam, M. A., and Friebele, J. (1997), "Fiber Grating Sensors", Journal of Lightwave Technology, Vol.15, No.8, pp.1442-1463   DOI   ScienceOn
4 Kim, R., Lee, W., Yoon, H. K., and Lee, J. S. (2009), "Temperature compensated Cone Penetrometers by using Fiber Optical Sensors", Geotechnical Testing Journal, ASTM (Submitted)
5 Lee, W., Lee, W. J., Lee, S. B., and Salgado, R. (2004), "Measurement of Pile Load Transfer Using the Fiber Bragg Grating Sensor System", Canadian Geotechnical Journal, Vol.41, No.6, pp.1222-1232   DOI   ScienceOn
6 Luune, T., Eidsmoen, T., Gillespie, D., and Howland, J. D. (1986), "Laboratory and field evaluation of cone penetrometers", Proceedings of the ASCE Specialty Conference In Situ '86: Use of In Situ Testes in Geotechnical Engineering, Blacksburg, pp.714-729
7 Zhou, Z., Thomas, W. G., Luke, H., and Ou, J. (2003), "Techniques of Advanced FBG Sensors: Fabrication, Demodulation, Encapsulation and Their Application in the Structural Health Monitoring of Bridges", Pacific Science Review, Vol.5, No.1, pp.116-121
8 Zuidberg, H. M. (1988), "Piezocone Penetration Testing-Probe Development", Proceedings of the 2nd International Symposium on Penetration Testing, ISOPT-1, Orlando, Specialty Session No.13, Balkema Pub., Rotterdam
9 Post, M. L. and Nebbeling, H. (1995), "Uncertainties in Cone Penetration Testing", Proceedings of the International Symposium on Cone Penetration Testing, CPT '95, Linkoping, Sweden, Vol.2, pp.73-78
10 Swedish Geotechnical Society, 1992, Recommended Standard for Cone Penetration Tests, Report 1:93 E
11 Buteau, S., Fortier, R, and Allard, M. (2005), "Rate-controlled Cone Penetration Tests in Permafrost", Canadian Geotechnical Journal, Vol.42, pp.184-197   DOI   ScienceOn
12 이종섭, 신동현, 윤형구, 이우진 (2008), "초소형 마이크로콘 관입시험기의 개발 및 적용", 한국지반공학회 논문집, 제24권, 2호, pp.77-86
13 ISSMFE. (1989), "International Reference Test Procedure for Con Penetration Test (CPT)", Report of the ISSMFE Technical Committee on Penetration Testing of Soils-TC16, with Reference to Test Procedures, Swedishi Geotechnical Institute, Linkoping Information, pp.6-16
14 Kanellopoulos, S. E., Handerek, V. A., and Rogers, A. J. (1995), "Simultaneous Strain and Temperature Sensing with Photogenerated In-fiber Gratings", Optics Letters, Vol.20, No.3, pp.333-335   DOI   ScienceOn