DOI QR코드

DOI QR Code

Acoustic emission monitoring of damage progression in CFRP retrofitted RC beams

  • Nair, Archana (Department of Civil and Environmental Engineering, Louisiana State University) ;
  • Cai, C.S. (Department of Civil and Environmental Engineering, Louisiana State University) ;
  • Pan, Fang (Department of Civil and Environmental Engineering, Louisiana State University) ;
  • Kong, Xuan (Department of Civil and Environmental Engineering, Louisiana State University)
  • Received : 2014.01.30
  • Accepted : 2014.03.21
  • Published : 2014.03.25

Abstract

The increased use of carbon fiber reinforced polymer (CFRP) in retrofitting reinforced concrete (RC) members has led to the need to develop non-destructive techniques that can monitor and characterize the unique damage mechanisms exhibited by such structural systems. This paper presented the damage characterization results of six CFRP retrofitted RC beam specimens tested in the laboratory and monitored using acoustic emission (AE). The focus of this study was to continuously monitor the change in AE parameters and analyze them both qualitatively and quantitatively, when brittle failure modes such as debonding occur in these beams. Although deterioration of structural integrity was traceable and can be quantified by monitoring the AE data, individual failure mode characteristics could not be identified due to the complexity of the system failure modes. In all, AE was an effective non-destructive monitoring tool that can trace the failure progression in RC beams retrofitted with CFRP. It would be advantageous to isolate signals originating from the CFRP and concrete, leading to a more clear understanding of the progression of the brittle damage mechanism involved in such a structural system. For practical applications, future studies should focus on spectral analysis of AE data from broadband sensors and automated pattern recognition tools to classify and better correlate AE parameters to failure modes observed.

Keywords

References

  1. Ansari, F. (2005), "Fiber optic health monitoring of civil structures using long gage and acoustic sensors", Smart Mater. Struct., 14(3), S1-S7. https://doi.org/10.1088/0964-1726/14/3/001
  2. ASTM E1316-07b (2007), Standard Terminology for Nondestructive Examinations, ASTM International, West Conshohocken, PA.
  3. Buyukozturk, O. and Hearing, B. (1998), "Failure behavior of precracked concrete beams retrofitted with FRP", J. Compos. Constr., 2(3), 138 -144. https://doi.org/10.1061/(ASCE)1090-0268(1998)2:3(138)
  4. Buyukozturk, O., Gunes, O. and Karaca, E. (2004), "Progress on understanding debonding problems in reinforced concrete and steel members strengthened using FRP composites", Constr. Build Mater., 18, 9-19. https://doi.org/10.1016/S0950-0618(03)00094-1
  5. Casas, J.R., Ramos, G., Carrillo, S.D. and Guemes, J.A. (2002), "Intelligent repair of existing concrete structures", Comput Aided Civ. Inf., 17, 43-47. https://doi.org/10.1111/1467-8667.00251
  6. Cecchini, A. (2005), Damage detection and identification in sandwich composites using neural networks, MS Thesis, University of Puerto Rico, Mayaguez, Puerto Rico.
  7. Chotickai, P. (2001), Acoustic emission monitoring of prestressed bridge girders with premature concrete deterioration, Master's thesis, University of Texas, Austin, Tx.
  8. Committee on Acoustic Emission from Reinforced Plastics (CARP) (1987), Recommended practice for acoustic emission of fiberglass reinforced plastic resin (RP) tanks/vessels, Composites Institute, Society of the Plastics Industry, New York.
  9. Degala, S., Rizzo, P., Ramanathan, K. and Harries, K.A. (2008), "Acoustic emission monitoring of CFRP reinforced concrete slabs", Constr. Build. Mater., 23(5), 2016-2026.
  10. Fowler, T.J., Blessing, J.A. and Conlisk, P.J. (1989), "New directions in testing", Proceedings of the 3rd International Symposium on Acoustic Emission from Composite Materials, Paris, France, July.
  11. Fowler, T.J., Blessing, J.A. and Strauser, F.E. (1992), "Intensity analysis", Proceedings of the 4th International Symposium on Acoustic Emission from Composite Materials, American Society for Nondestructive testing, Columbus Ohio.
  12. Ghorbanpoor, A. and Rentmeester, A.T. (1993), "NDE of steel bridges by Acoustic emission", Proceedings of the Structural Engineering in Natural Hazards Mitigation, ASCE, Irvine, California, April.
  13. Golaski, L., Gebski, P. and Ono, K. (2002), "Diagnostics of reinforced concrete bridges by acoustic emission", JAE, 20, 83-98.
  14. Gostautas, R.S., Ramirez, G., Peterman, R.J. and Meggers, D. (2005), "Acoustic emission monitoring and analysis of Glass Fiber-reinforced composites bridge decks", J. Bridge Eng.- ASCE, 10(6), 713-721. https://doi.org/10.1061/(ASCE)1084-0702(2005)10:6(713)
  15. Henkel, D.P. and Wood, J.D. (1991), "Monitoring concrete reinforced with bonded surface plates by the acoustic emission method", NDT & E Int., 24(5), 139-147.
  16. Johnson, D.E., Shen, H.W. and Finlayson, R.D. (2001), "Acoustic emission evaluation of reinforced concrete bridge beam with graphite composite laminate", Smart Struct. Mater., 4330, 498-504.
  17. Lau, K.T., Yuan, L.B., Zhou, L.M, Wu, J.S. and Woo, C.H. (2001), "Strain Monitoring in FRP Laminates and Concrete Beams Using FBG Sensors", Compos. Struct., 51, 9-20. https://doi.org/10.1016/S0263-8223(00)00094-5
  18. Levar, J. and Hamilton, H. (2003), "Nondestructive evaluation of carbon fiber-reinforced polymer-concrete bond using infrared thermography", ACI Mater. J., 100(1), 63-72.
  19. Mirmiran, A, Shahawy, M, and El Echary, H. (1999), "Acoustic emission monitoring of hybrid FRP-concrete columns", J. Eng. Mech. - ASCE, 125(8), 899-905. https://doi.org/10.1061/(ASCE)0733-9399(1999)125:8(899)
  20. Mirmiran, A. and Wei, Y. (2001), "Damage assessment of FRP-encased concrete using ultrasonic pulse velocity", J. Eng. Mech. -ASCE., 127(2), 126-135. https://doi.org/10.1061/(ASCE)0733-9399(2001)127:2(126)
  21. Mirmiran, A. and Philip, S. (2000), "Comparison of acoustic emission activity in steel-reinforced and FRP-reinforced concrete beams", Constr. Build Mater., 14(6), 299-310. https://doi.org/10.1016/S0950-0618(00)00036-2
  22. Ohtsu, M., Uchida, M., Okamoto, T. and Yuyama, S. (2002), "Damage Assessment of reinforced concrete beams qualified by Acoustic emission", ACI Struct. J., 99(4), 411-417.
  23. Park, J.Y., Cho, H.D., Han, H.S. and Choi, M.Y. (2004), "Detection of crack source location on RC structures strengthened with CFRP plate for health monitoring system", Key Eng. Mat., 270-273, 1971-1976. https://doi.org/10.4028/www.scientific.net/KEM.270-273.1971
  24. Ridge, A.R. and Ziehl, P.H. (2006), "Evaluation of strengthened reinforced concrete beams: cyclic load test and acoustic emission methods", ACI Struct. J., 103(6), 832-841.
  25. Teng, J.G., Chen J.F., Smith, S.T. and Lam, L. (2001), FRP-strengthened RC Structures, John Wiley & Sons, U.K.
  26. Whitten, L.S., Joel P., Conte and Eric, U. (1999), "Long gage fiber fragg grating sensors to monitor civil structures", SPIE, 4330, 56-65.
  27. Yuyama, S., Okamoto, T., Shigeishi, M., Ohsu, M. and Kishi, T. (1999), "A proposed standard for evaluating structural integrity of Reinforced Concrete Beams by Acoustic emission", Acoustic emission: Standards and Technology update, ASTM STP 1353, (Ed. S.J. Vahaviolos), American Society for testing and materials, West Conshohocken, PA.

Cited by

  1. Application of acoustic emission monitoring for assessment of bond performance of corroded reinforced concrete beams vol.16, pp.6, 2017, https://doi.org/10.1177/1475921716681460
  2. Correlation between acoustic emission distribution and stress variation through the depth of RC beam cross sections vol.150, pp.None, 2014, https://doi.org/10.1016/j.conbuildmat.2017.06.001
  3. Studying Failure Modes of GFRP Laminate Coupons Using AE Pattern-Recognition Method vol.32, pp.4, 2019, https://doi.org/10.1061/(asce)as.1943-5525.0001015
  4. Analysis of acoustic emission signals during fatigue testing of a M36 bolt using the Hilbert-Huang spectrum vol.7, pp.1, 2014, https://doi.org/10.12989/smm.2020.7.1.013
  5. Condition assessment of bridge pier using constrained minimum variance unbiased estimator vol.7, pp.4, 2014, https://doi.org/10.12989/smm.2020.7.4.319