Natural frequency based damage identification of beams using piezoelectric materials
| dc.contributor.author | Zhao, Shengjie | |
| dc.contributor.examiningcommittee | Deng, Chuang (Mechanical Engineering) Jiang, Changmin (Supply Chain Management) | en_US |
| dc.contributor.supervisor | Wu, Nan (Mechanical Engineering) | en_US |
| dc.date.accessioned | 2016-09-08T20:46:23Z | |
| dc.date.available | 2016-09-08T20:46:23Z | |
| dc.date.issued | 2015 | en_US |
| dc.date.issued | 2015-12-24 | en_US |
| dc.degree.discipline | Mechanical Engineering | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | Following the studies of natural frequency based damage detection methods, an advanced technique for damage detection and localization in beam-type structures using a vibration characteristic tuning procedure is developed by an optimal design of piezoelectric materials. Piezoelectric sensors and actuators are mounted on the surface of the host beam to generate excitations for the tuning via a feedback process. The excitations induced by the piezoelectric effect are used to magnify the effect of the damage on the change of the natural frequencies of the damaged structure to realize the high detection sensitivity. Based on the vibration characteristic tuning procedure, a scan-tuning methodology for damage detection and localization is proposed. From analytical simulations, both crack and delamination damage in the beams are detected and located with over 20% change in the natural frequencies. Finite element method (FEM) simulations are conducted to verify the effectiveness of the proposed methodology. | en_US |
| dc.description.note | October 2016 | en_US |
| dc.identifier.citation | S. Zhao, N. Wu, Y. Cheng, High Sensitivity Damage Detection With Vibration Mode Shape Tuning Through the Optimal Design of Piezoelectric Actuators, in: ASME 2015 International Mechanical Engineering Congress and Exposition, American Society of Mechanical Engineers, 2015, pp. V04BT04A038-V004BT004A038. | en_US |
| dc.identifier.citation | S. Zhao, N. Wu, Q. Wang, Damage Detection of Beams by a Vibration Characteristic Tuning Technique Through an Optimal Design of Piezoelectric Layers, International Journal of Structural Stability and Dynamics, (2015) 1550070. | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/31652 | |
| dc.language.iso | eng | en_US |
| dc.publisher | ASME 2015 International Mechanical Engineering Congress and Exposition | en_US |
| dc.publisher | International Journal of Structural Stability and Dynamics | en_US |
| dc.rights | open access | en_US |
| dc.subject | Damage identification | en_US |
| dc.subject | Vibration characteristic tuning | en_US |
| dc.subject | Piezoelectric actuators | en_US |
| dc.title | Natural frequency based damage identification of beams using piezoelectric materials | en_US |
| dc.type | master thesis | en_US |