Experimental Study on Damage Detection in Timber Specimens Based on an Electromechanical Impedance Technique and RMSD-Based Mahalanobis Distance
In the electromechanical impedance (EMI) method, the PZT patch performs the functions of both sensor and exciter. Due to the high frequency actuation and non-model based characteristics, the EMI method can be utilized to detect incipient structural damage. In recent years EMI techniques have been wi...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-10-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/16/10/1765 |
| _version_ | 1828109296516202496 |
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| author | Dansheng Wang Qinghua Wang Hao Wang Hongping Zhu |
| author_facet | Dansheng Wang Qinghua Wang Hao Wang Hongping Zhu |
| author_sort | Dansheng Wang |
| collection | DOAJ |
| description | In the electromechanical impedance (EMI) method, the PZT patch performs the functions of both sensor and exciter. Due to the high frequency actuation and non-model based characteristics, the EMI method can be utilized to detect incipient structural damage. In recent years EMI techniques have been widely applied to monitor the health status of concrete and steel materials, however, studies on application to timber are limited. This paper will explore the feasibility of using the EMI technique for damage detection in timber specimens. In addition, the conventional damage index, namely root mean square deviation (RMSD) is employed to evaluate the level of damage. On that basis, a new damage index, Mahalanobis distance based on RMSD, is proposed to evaluate the damage severity of timber specimens. Experimental studies are implemented to detect notch and hole damage in the timber specimens. Experimental results verify the availability and robustness of the proposed damage index and its superiority over the RMSD indexes. |
| first_indexed | 2024-04-11T11:01:28Z |
| format | Article |
| id | doaj.art-07ea0f1c5f584c8abf1526a8f723115c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T11:01:28Z |
| publishDate | 2016-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-07ea0f1c5f584c8abf1526a8f723115c2022-12-22T04:28:36ZengMDPI AGSensors1424-82202016-10-011610176510.3390/s16101765s16101765Experimental Study on Damage Detection in Timber Specimens Based on an Electromechanical Impedance Technique and RMSD-Based Mahalanobis DistanceDansheng Wang0Qinghua Wang1Hao Wang2Hongping Zhu3School of Civil Engineering & Mechanics, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Civil Engineering & Mechanics, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Civil Engineering & Mechanics, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Civil Engineering & Mechanics, Huazhong University of Science and Technology, Wuhan 430074, ChinaIn the electromechanical impedance (EMI) method, the PZT patch performs the functions of both sensor and exciter. Due to the high frequency actuation and non-model based characteristics, the EMI method can be utilized to detect incipient structural damage. In recent years EMI techniques have been widely applied to monitor the health status of concrete and steel materials, however, studies on application to timber are limited. This paper will explore the feasibility of using the EMI technique for damage detection in timber specimens. In addition, the conventional damage index, namely root mean square deviation (RMSD) is employed to evaluate the level of damage. On that basis, a new damage index, Mahalanobis distance based on RMSD, is proposed to evaluate the damage severity of timber specimens. Experimental studies are implemented to detect notch and hole damage in the timber specimens. Experimental results verify the availability and robustness of the proposed damage index and its superiority over the RMSD indexes.http://www.mdpi.com/1424-8220/16/10/1765damage detectiontimber specimenelectromechanical impedanceMahalanobis distanceRMSDexperimental study |
| spellingShingle | Dansheng Wang Qinghua Wang Hao Wang Hongping Zhu Experimental Study on Damage Detection in Timber Specimens Based on an Electromechanical Impedance Technique and RMSD-Based Mahalanobis Distance Sensors damage detection timber specimen electromechanical impedance Mahalanobis distance RMSD experimental study |
| title | Experimental Study on Damage Detection in Timber Specimens Based on an Electromechanical Impedance Technique and RMSD-Based Mahalanobis Distance |
| title_full | Experimental Study on Damage Detection in Timber Specimens Based on an Electromechanical Impedance Technique and RMSD-Based Mahalanobis Distance |
| title_fullStr | Experimental Study on Damage Detection in Timber Specimens Based on an Electromechanical Impedance Technique and RMSD-Based Mahalanobis Distance |
| title_full_unstemmed | Experimental Study on Damage Detection in Timber Specimens Based on an Electromechanical Impedance Technique and RMSD-Based Mahalanobis Distance |
| title_short | Experimental Study on Damage Detection in Timber Specimens Based on an Electromechanical Impedance Technique and RMSD-Based Mahalanobis Distance |
| title_sort | experimental study on damage detection in timber specimens based on an electromechanical impedance technique and rmsd based mahalanobis distance |
| topic | damage detection timber specimen electromechanical impedance Mahalanobis distance RMSD experimental study |
| url | http://www.mdpi.com/1424-8220/16/10/1765 |
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