Research Articles | Challenge Journal of Concrete Research Letters

Damage Detection of Ferrocement Tanks Using Experimental Modal Analysis and Finite Element Analysis

Yousry B.I. Shaheen, Boshra Eltaly

Abstract


In the recent years, structural health monitoring for civil structures using experimental modal analysis has been developed. Experimental modal analysis is the process of determining the dynamic parameters (frequencies, damping factors, modal vectors and modal scaling) of a linear, time invariant system by way of an experimental approach. It began in 1940’s in aircraft then it used in civil structures since the advent of the digital mini-computers and the digital Fast Fourier Transformation (FFT) spectrum analyzer in the early 1970’s. In this paper, the damage in ferrocement tank is detected experimentally by changing in its dynamic parameters due to two damages that were manufactured in its wall. Also in the current paper, theoretical models using ANSYS finite element software were developed to find the modal parameters of the healthy and damage tank. The current results showed that the theoretical models give accurate results in comparing with the theoretical results. Also the experimental modal analysis is quick, easy and inexpensive method to detect the damage in the ferrocement tank.

Keywords


ferrocment tank; experimental modal analysis; input-output response; classic modal analysis; impact testing; frequency response function; finite element analysis

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References


Doherty, J. E., “Nondestructive evaluation,” Chapter 12 in Handbook on Experimental Mechanics, A. S. Kobayashi Edition, Society for Experimental Mechanics, Inc,1987.

Yan, Y., Cheng, L., Wu, Z., and Yam, L., “Development in vibration-based structural damage detection technique,” Journal of Mechanical Systems and Signal Processing, Vol. 21, PP. 2198–2211, 2007.

Scott, W. D., Charles R. F., and Michael B. P., “A summary review of vibration based damage identification methods,” Journal of Shock and Vibration Digest, Vol. 30, No. 2, PP. 91–105, 1998.

Farrar, C.R., James, G.H., “System identification from ambient vibration measurements on a bridge,” Journal of Sound and Vibration, Vol. 1, No. 205, PP.1–18, 1997.

Schwarz, B., and Richardson, M., "Experimental modal analysis," CSI Reliability Week, Orlando, FL, 1999.

Fan, W., and Qiao, P., “A 2-D continuous wavelet transform of mode shape data for damage detection of plate structures,” International Journal of Solids and Structures, Vol. 46, PP. 4379–4395, 2009.

Lestari, W., and Qiao, P., “Damage detection of fiber-reinforced polymer honeycomb sandwich beams,” Journal of Composite Structures, Vol. 67, PP. 365–373, 2005.

Araujo dos Santos J. V., Lopes, H. M., Vaz M., MotaSoares C. M., MotaSoares, C. A., and de Freitas, M. J., “Damage localization in laminated composite plates using mode shapes measured by pulsed TV holography,” Composite Structures, Vol. 76, PP. 272–281, 2006.

Zhu, H., Li, L., and He, X., “Damage detection method for shear buildings using the changes in the first mode shape slopes,” Journal of Computers and Structures, Vol. 89, PP. 733–743, 2011.

Robles-Austriaco, L., Pama, R. P., and Valls, J., "Ferrocement an innovative technology for housing,” Journal of Ferrocement, Vol. 11, No. 1, pp. 23-47, 1981.

Ali, A. A., “Applications of Ferrocement as a Low Cost Construction Material in Malaysia,” Journal of Ferrocement, Vol. 25, No. 2, pp. 123-128, April, 1995.

Fahmy, E. H., Shaheen, Y. B., and Korany, Y. S., “Use of ferrocement laminates for repairing reinforced concrete slabs,” Journal of Ferrocement, Vol. 27, No. 3, pp. 219-232, 1997.

Elavenil, S., and Chandrasekar, V., “Analysis of reinforced concrete beams strengthened with ferrocement,” International Journal of Applied Engineering Research, Vol. 2, No. 3, pp. 431-440, 2007.

Jumaat, M., and Alam A., “Flexural strengthening of reinforced concrete beams using ferrocement laminate with skeletal bars,” Journal of Applied Sciences Research, Vol. 2, No. 9, PP. 559-566, 2006.

Mourad, S. M., and Shannag, M. J., “Repair and strengthening of reinforced concrete square columns using ferrocement jackets,” Journal of Cement and Concrete Composites, Vol. 34, PP. 288–294, 2012.

Kaish, M. A., Alam, A. B., Jamil, M. R., Zain, M. F., Wahed, M. A., “Improved ferrocement jacketing for restrengthening of square RC short column,” Journal of Construction and Building Materials, Vol. 36, PP. 228–237, 2012.

Xiong, G. J., Wu, X. Y., Li, F.F., and Yan, Z. “Load carrying capacity and ductility of circular Concrete columns confined by ferrocement including steel bars,” Journal of Construction and Building Materials, Vol. 25, pp. 2263–2268, 2011.

Ibrahim, H. M., “Experimental investigation of ultimate capacity of wired mesh-reinforced cementitious slabs,” Journal of Construction and Building Materials, Vol. 25, PP. 251–259, 2011.

Hago, A. W., Al-Jabri, K.S., Alnuaimi, A.S., Al-Moqbali, H., Al-Kubaisy, M. A., “Ultimate and service behavior of ferrocement roof slab panels,” Journal of Construction and Building Materials, Vol. 19, pp. 31–37, 2005.

Nassif, H, H., and Najm, H., “Experimental and analytical investigation of ferrocement–concrete composite beams,” Journal of Cement and Concrete Composites, Vol. 26. PP. 787-796, 2004.

Moita, G., de Las Casas, E., Mantilla, E., and Bonifacio S., “Experimental and numerical analysis of large ferrocement water tanks,” Journal of Cement and Concrete Composites, Vol. 25, PP. 243–251, 2003.

Ansys, “Help and manual,” 11th Edition, ANSYS Inc, PA, USA, 2006.

Cook, R. D., “Finite element modeling for stress analysis,” 1st Edition, John Wiley and Sons, Inc, New York, USD, 1995.

Cook, R. D., Malkus, D. S., Plesha, M. E., and. Witt, R. J., “Concepts and applications of finite element analysis,” 4th Edition, John Wiley and Sons, Inc, New York, USD, 2002.

Aboul-Anen, B., El-Shafey, A., and El-Shami, M., “Experimental and analytical model of ferrocement slabs,” International Journal of Recent Trends in Engineering, IJJCE, Oulu, Finland, 2009.

Hoque, M. M., “3D nonlinear mixed finite-element analysis of RC beams and plates with and without FRP reinforcement,” M. Sc. Thesis, University of Manitoba, Winnipeg, Manitoba, Canada, 2006.

Singh, G., “Finite element analysis of reinforced concrete shear walls,” M. Sc. Thesis, Deemed University, India, 2006.


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