FE Model Updating for Health Monitoring of Structures and its Experimental Verification by Damage Detection

Gwang Hee Heo; Joon Ryong Jeon; Chin Ok Lee; Gui Lee; Woo Sang Lee

doi:10.4028/www.scientific.net/KEM.321-323.268

Paper Titles

Assessment Model for the Safety and Serviceability of Steel Beams Using Terrestrial LiDAR
p.248

Simultaneous Monitoring of Acoustic Emission and Corrosion Potential Fluctuation for Mechanistic Study of Chloride Stress Corrosion Cracking
p.254

Development of Heat Resistant AE Monitoring System Using Optical Fiber Sensor
p.260

Monitoring of a Steel Plate Girder Railroad Bridge with Fiber Bragg Grating Sensors
p.264

FE Model Updating for Health Monitoring of Structures and its Experimental Verification by Damage Detection
p.268

Optimal Accelerometer Locations for Structural Health Monitoring Using Time-Domain System Identification
p.273

Contribution of Three-Dimensional Trabecular Bone Microstructure of the Proximal Femur to its Mechanical Properties as Assessed by Micro-Finite Element Analysis
p.278

Integrity Assessment for Beam-Like Structures by Continuous Wavelet Transform
p.282

Fatigue Crack Growth Monitoring by Optical Fiber Sensors in Smart Composite Patch Repairs
p.286

HomeKey Engineering MaterialsKey Engineering Materials Vols. 321-323FE Model Updating for Health Monitoring of...

FE Model Updating for Health Monitoring of Structures and its Experimental Verification by Damage Detection

Abstract:

This paper presents an effective method of FE model updating for health monitoring of structures by applying ambient vibration. And this method is experimented through damage detection and proved to be valid. Experiment about ambient vibration is performed on cantilever beam, and the dynamic characteristics are analyzed by NExT and ERA. The results of such experiments are compared to those of FE analysis, and this comparison enables us to overcome some errors in experiments and analysis. On the basis of improved results by the comparison, model updating is performed in order to construct a basic structure for health monitoring. For model updating, we employ direct matrix updating method (DMUM) and Error matrix method (EMM) in which ambient vibration is easily applied. The model updating by the methods are again evaluated in terms of error ratio of natural frequency, comparing each result before and after updating. Finally, we perform experiments on damage detection to verify the method of updating presented here, and evaluate its performance by eigen-parameter change method. The evaluation proves that the method of FE model updating using ambient vibration is effective for health monitoring of structure, and some further application of this method is suggested.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 321-323)

Pages:

268-272

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.321-323.268

Citation:

Cite this paper

Online since:

October 2006

Authors:

Gwang Hee Heo, Joon Ryong Jeon, Chin Ok Lee, Gui Lee, Woo Sang Lee

Keywords:

Ambient Vibration, Damage Detection, Direct Matrix Updating Method, Eigen-Parameter Change Method, Error Matrix Method, FE Model Updating, Health Monitoring

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] Doebling, S.W., Farrar, C.R., Prome, M.B. and Shevitz, D.W.: Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: a literature review ( Los Alamos National Laboratory Report LA-13070-MS, 1996).

DOI: 10.2172/249299

Google Scholar

[2] Johnson, E.A., Lam H.F., Katafygiotis, L.S., Beck, J.L.: A Benchmark Problem for Structural Health Monitoring and Damage Detection ( Proc. 14th Engineering Mechanics Conf, 2000).

DOI: 10.1142/9789812811707_0028

Google Scholar

[3] Baruch, M.: Optimization Procedure to Correct Stiffness and Flexibility Matrices Using Vibration Tests ( AIAA J., 16(11), pp.1208-1210, 1978).

DOI: 10.2514/3.61032

Google Scholar

[4] Berman, A. and Nagy, E.J.: Improvement of a Large Analytical Model Using Test Data (AIAA J., 21(8), pp.1168-1173, 1983).

DOI: 10.2514/3.60140

Google Scholar

[5] Sidhu, J. and Ewins, D.J.: Correlation of Finite Element and Modal Test Studies of a Practical Structure ( Proc. 2nd Intl. Modal Anal. Conf., pp.756-762, 1984).

Google Scholar

[6] Salawu O. S. and Williams C.: Structural Damage Detection Using Experimental Modal Analysis-A Comparison of Some Methods ( Proc. 11th Intl. Modal Anal. Conf., 1993).

Google Scholar

[7] Lieven, N.A.J. and Ewins, D.J.: Spatial Correlation of Mode Shapes, the Coordinate Modal Assurance Criterion(COMAC) ( Proc. 6th Intl. Modal Anal. Conf., pp.690-695, 1988).

Google Scholar