Civil engineering
structures are constructed for strength, serviceability and durability. The
structures thus constructed involve huge investment and labour work. In order
to protect the structure from various damages, periodic monitoring of
structures is necessary. Hence Structural Health Monitoring (SHM) plays a vital
role in diagnosing the state of the structure at every moment during its life
period. For this purpose, sensors are deployed in the structures for its efficient
health monitoring. Sensors cannot be deployed at random locations of the
structure. They have to be located at those points which reflect the damage. In
this study, a 3-storey and a 4-storey building are taken and Modal Strain
Energy (MSE) is used for finding the initial locations of sensors. The number
of sensors obtained is then optimized using Genetic Algorithm (GA) technique.
Finally damages are induced in certain locations of the structure and a damage
detection technique called as “Flexibility Matrix Based Technique (FMBT)” is
introduced for damage localization in the structure.
References
[1]
Li, H.N., Yi, T.H., Yi, X.D. and Wang, G.X. (2007) Measurement and Analysis of Wind-Induced Response of Tall Building Based on GPS Technology. Advances in Structural Engineering, 10, 83-93. http://dx.doi.org/10.1260/136943307780150869
[2]
Friswell, M.I. and Mottershead, J. (1995) Finite Element Modal Updating in Structural Dynamics. Kluwer Academic Publishers, Netherlands. http://dx.doi.org/10.1007/978-94-015-8508-8
[3]
Ou, J. and Li, H. (2010) Structural Health Monitoring in Mainland China: Review and Future Trends. Structural Health Monitoring, 9, 219-231. http://dx.doi.org/10.1177/1475921710365269
[4]
Boller, C., Chang, F.K. and Fujino, Y. (2009) Encyclopedia of Structural Health Monitoring. John Wiley & Sons, New York. http://dx.doi.org/10.1002/9780470061626
[5]
Yi, T.H. and Li, H.N. (2012) Methodology Developments in Sensor Placement for Health Monitoring of Civil Infrastructures. International Journal of Distributed Sensor Networks, 2012, Article ID: 612726.
[6]
Worden, K. and Burrows, A.P. (2001) Optimal Sensor Placement for Fault Detection. Engineering Structures, 23, 885-901. http://dx.doi.org/10.1016/S0141-0296(00)00118-8
[7]
Bakir, P.G. (2011) Evaluation of Optimal Sensor Placement Techniques for Parameter Identification in Buildings. Mathematical and Computational Applications, 16, 456-466.
[8]
Bakir, P.G. (2008) An Integrated Methodology for Damage Identification in Existing Buildings Using Optimal Sensor Placement Techniques. The 14th World Conference on Earthquake Engineering, Beijing, 12-17 October 2008, 1-11.
[9]
Kammer, D.C. (1991) Sensor Placement for On-Orbit Modal Identification and Correlation of Large Space Structures. Journal of Guidance, Control, and Dynamics, 14, 251-259. http://dx.doi.org/10.2514/3.20635
[10]
Li, D.-S., Li, H.-N. and Fritzen, C.-P. (2009) A Note on Fast Computation of Effective Independence through QR Downdating for Sensor Placement. Mechanical Systems and Signal Processing, 23, 1160-1168. http://dx.doi.org/10.1016/j.ymssp.2008.09.007
[11]
Carne, T.G. and Dohrmann, C.R. (1995) A Modal Test Design Strategy for Model Correlation. Proceedings of the 13th International Modal Analysis Conference, New York, 13-16 February 1995, 927-933.
[12]
Chiu, P.L. and Lin, F.Y.S. (2004) A Simulated Annealing Algorithm to Support the Sensor Placement for Target Location. Proceedings of the IEEE Canadian Conference on Electrical and Computer Engineering, Vol. 2, 867-870.
[13]
Zhang, X., Li, J.L., Xing, J.C., Wang, P., Yang, Q.L., Wang, R.H. and He, C. (2014) Optimal Sensor Placement for Latticed Shell Structure Based on an Improved Particle Swarm Optimization Algorithm. Mathematical Problems in Engineering, 2014, Article ID: 743904.
[14]
Gao, H. and Rose, J.L. (2006) Sensor Placement Optimization in Structural Health Monitoring Using Genetic and Evolutionary Algorithms. in Proceedings of SPIE Smart Structures and Materials, vol. 6174, San Diego,1687-1693.
[15]
Srinivas, M. and Patnaik, L.M. (1994) Adaptive Probabilities of Crossover and Mutation in Genetic Algorithms. IEEE Transactions on Systems, Man and Cybernetics, 24, 656-667. http://dx.doi.org/10.1109/21.286385
[16]
Brehm, M., Zabel, V. and Bucher, C. (2004) An Automatic Mode Pairing Strategy Using an Enhanced Modal Assurance Criterion Based on Modal Strain Energies. Journal of Sound and Vibration, 329, 5375-5392. http://dx.doi.org/10.1016/j.jsv.2010.07.006
[17]
Yi, T.H., Li, H.N. and Wang, G.-X. (2008) Optimal Sensor Placement for Super High-Rise Building Based on Simplified Finite Element Model. Chinese Journal of Computational Mechanics, 25, 417-423.
[18]
Montazer, M. and Seyedpoor, S.M. (2014) A New Flexibility Based Damage Index for Damage Detection of Truss Structures. Shock and Vibration, 2014, Article ID: 460692.
