Addressing the Need to Monitor Concrete Fatigue with Nondestructive Testing: Results of Infrastar European Project
Conference: Publication Date: 27 August 2018Testing Method:
Fatigue is one of the most prevalent issues, which directly influences the service life expectancy of concrete structures. Fatigue has been investigated for years for steel structures. However, recent findings suggest that concrete structures may also be significantly subjected to fatigue phenomena that could lead to premature failure of certain structural elements. To date, fatigue of reinforced concrete has been given little focus. Knowledge on the influence factors and durability/capacity effects on this material should be improved. Current technological means to measure fatigue in civil structures like bridges and wind turbines (both onshore and offshore) are outdated, imprecise and inappropriate.
Meanwhile, this topic has got much more attention as time-variant loading on concrete structures plays an increasing role, e.g. in bridges with increasing traffic and heavier trucks, and for wind turbines for renewable energy production, e.g. for offshore wind turbine support structures affected by wind and waves. The European Innovative Training Networks (ITN) Marie Skłodowska-Curie Actions project INFRASTAR (Innovation and Networking for Fatigue and Reliability Analysis of Structures - Training for Assessment of Risk) provides research training for 12 PhD students. The project aims to improve knowledge for optimizing the design of new structures as well as for more realistic verification of structural safety and more accurate prediction of the remaining fatigue lifetime of existing concrete structures.
First, the INFRASTAR research framework is detailed. Then it will be exemplified through the presentation of the major results of the four PhD students involved in the work package dealing with auscultation and monitoring. This includes the development and improvement of Fiber Optics (FO) and Coda Wave Interferometry (CWI) for crack sizing and imagery, new sensor technologies and integration, information management, monitoring strategy for fatigue damage investigation and lifetime prediction.
- Ansari, F., Libo, Y., 1998, “Mechanics of bond and interface shear transfer in optical fiber sensors,” Journal of engineering mechanics, 124, 385-394.
- Bayane I, Brühwiler E, 2018, “Pocket-Monitoring” for fatigue safety verification of a RC bridge deck slab,” IALCCE2018, The Sixth International Symposium on Life-Cycle Civil Engineering, Ghent Belgium.
- Bassil A., Chapeleau X., Leduc D., Abraham O. , 2018, “Quantification of cracks in reinforced concrete structures using distributed fibre optic sensors ,” EWSHM 2018, The 9th European Workshop on Structural Health Monitoring Series, 10-13 July 2018 , Manchester, UK.
- Clark G., 2008, “Cable Damage Detection Using Time Domain Reflectometry and Model Based Algorithms,” Lawrence Livermore National Laboratory, document No. LLNL-CONF402567.
- Feng X., Zhou J., Sun C., Zhang X., Ansari, F., 2013, “Theoretical and experimental investigations into crack detection with BOTDR-distributed fiber optic sensors,” Journal of Engineering Mechanics, 139, pp 1797-1807.
- Hay T. R., Royer R. L., Gao H., Zhao X., Rose J. L., 2006, “A comparison of embedded sensor Lamb wave ultrasonic tomography approaches for material loss detection,” Smart Mater. Struct., 15, pp 946–951.
- Liu Q. C., Wang H.-P. B., 2001, “A case study on multisensor data fusion for imbalance diagnosis of rotating machinery,” Artif. Intell. Eng. Des. Anal. Manuf., 15, pp 203–210.
- Long L., Thöns S., Döhler M. , 2017, “Damage detection and deteriorating structural systems ,” IWSHM 2017, The 11th International Workshop on Structural Health Monitoring, 12-14 September 2017, Stanford, California, USA.
- Long L., Thöns S., Döhler M. , 2018, “The effects of SHM system parameters on the value of damage detection information ,” EWSHM 2018, The 9th European Workshop on Structural Health Monitoring Series, 10-13 July 2018, Manchester, UK.
- Mankar A., Rastayesh S., Sørensen J.D. , “Sensitivity and Identifiability Study for Uncertainty Analysis of Material Model for Concrete Fatigue ,” IRSEC 2018, 5th International Reliability and Safety Engineering Conference, 9-10 May 2018, Shiraz University, Iran .
- Mankar A., Rastayesh S. &. Sørensen, J.D, 2018, "Fatigue Reliability analysis of Cret De l’Anneau Viaduct: a case study," IALCCE2018, The Sixth International Symposium on Life-Cycle Civil Engineering, Ghent Belgium.
- Nesterova N., Schmidt F., Soize C., Siegert D., 2017, “Extreme effects on bridges caused by traffic and wind,” CFM 2017, Congrès Français de Mécanique, 28 August - 01 September 2017, Lille, France.
- Niederleithinger, E., Wolf, J., Mielentz, F., Wiggenhauser, H., & Pirskawetz, S., 2015, “Embedded Ultrasonic Transducers for Active and Passive Concrete Monitoring,” Sensors, 15, 9756
- Planès T., Larose E., 2013, “A review of ultrasonic Coda Wave Interferometry in concrete,” Cement and Concrete Research, 53, pp 248-255.
- Rastayesh S., Mankar A., Sørensen J. D. , 2018, “Comparative Investigation of Uncertainty Analysis with Different Methodologies on Fatigue Data of Rebars ,” IRSEC 2018, 5th International Reliability and Safety Engineering Conference, 9-10 May 2018, Shiraz University, Iran.Schläfli M. and Brühwiler E. (1998) ‘Fatigue behaviour of existing reinforced concrete bridge deck slabs’, Engineering Structures, Vol. 20, No. 11, pp. 991-998, 1998. SIA, 2013, “SIA 269/2 :2013. Maintenance des structures porteuses – Structures en béton. Zurich,” Swiss society of engineers and architects.
- C. Sens-Schoenfelder and U. Wegler, 2003, “Passive image interferometry and seasonal variations of seismic velocities at Merapi volcano, Indonesia,” Geophys. Res. Lett., 33(21), L21302.
- Wang X., Niederleithinger E., 2018, “Coda wave interferometry used to detect loads and cracks in a concrete structure under field conditions ,” EWSHM 2018, The 9th European Workshop on Structural Health Monitoring Series, 10-13 July 2018 , Manchester, UK.
- Zhang Y., Abraham O., Chapeleau X., Cottineau L.-M., Tournat V., Le Duff A., Lascoup B., Durand O., 2013, “Study of concrete's behavior under 4-point bending load using Coda Wave Interferometry (CWI) analysis,”AIP Conference Proceedings, 1511(1), pp 398-404.
- Zhang Y., Larose E., Moreau L., d’Ozouville G., 2018, “ Three-dimensional in-situ imaging of cracks in concrete using diffuse ultrasound,” Structural Health Monitoring, 17(2), pp 279-284.
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