Non-Destructive Evaluation of Preload Loss of Bolted Spherical Joints Based on Time Reversal Acoustics: A Numerical Simulation
Bolted spherical joints are widely used in space grid structures. However, the preload loss, which may arise from fabrication error, insufficient twist of the screw and some other unknown reasons can undermine the structural integrity and even lead to the collapse of the whole structure. Therefore,...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/1/127 |
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| author | Zheng Huang Zhengyu Gu Zuanfeng Pan Zhitao Zhang Yichao Yang |
| author_facet | Zheng Huang Zhengyu Gu Zuanfeng Pan Zhitao Zhang Yichao Yang |
| author_sort | Zheng Huang |
| collection | DOAJ |
| description | Bolted spherical joints are widely used in space grid structures. However, the preload loss, which may arise from fabrication error, insufficient twist of the screw and some other unknown reasons can undermine the structural integrity and even lead to the collapse of the whole structure. Therefore, a method for evaluating the preload status of bolted spherical joints is vital to the structural health monitoring of the space grid structures. To this end, a non-destructive evaluation of the preload loss of bolted spherical joints based on time reversal acoustics (TRA) is presented. In this method, an excited signal generated by a lead zirconate titanate (PZT) patch at the bolted sphere is reconstructed after the signal recorded by another PZT patch at the bar is time-reversed and re-emitted. The deviation of the reconstructed signal from the initial signal allows identification of preload loss of the bolted spherical joint. This method is demonstrated to be effective by a finite element simulation. Furthermore, the effect of preload loss of the bolted spherical joint on its ultimate flexural capacity is studied, which highlights the necessity for the non-destructive evaluation. |
| first_indexed | 2024-03-09T13:20:24Z |
| format | Article |
| id | doaj.art-602738934c754e11806e06f9f1a232ab |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T13:20:24Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-602738934c754e11806e06f9f1a232ab2023-11-30T21:30:16ZengMDPI AGBuildings2075-53092023-01-0113112710.3390/buildings13010127Non-Destructive Evaluation of Preload Loss of Bolted Spherical Joints Based on Time Reversal Acoustics: A Numerical SimulationZheng Huang0Zhengyu Gu1Zuanfeng Pan2Zhitao Zhang3Yichao Yang4School of Transportation and Civil Engineering, Nantong University, Nantong 226019, ChinaShanghai Tobacco Group Co., Ltd., Shanghai 200082, ChinaCollege of Civil Engineering, Tongji University, Shanghai 200092, ChinaCollege of Civil Engineering, Tongji University, Shanghai 200092, ChinaShanghai Tobacco Group Co., Ltd., Shanghai 200082, ChinaBolted spherical joints are widely used in space grid structures. However, the preload loss, which may arise from fabrication error, insufficient twist of the screw and some other unknown reasons can undermine the structural integrity and even lead to the collapse of the whole structure. Therefore, a method for evaluating the preload status of bolted spherical joints is vital to the structural health monitoring of the space grid structures. To this end, a non-destructive evaluation of the preload loss of bolted spherical joints based on time reversal acoustics (TRA) is presented. In this method, an excited signal generated by a lead zirconate titanate (PZT) patch at the bolted sphere is reconstructed after the signal recorded by another PZT patch at the bar is time-reversed and re-emitted. The deviation of the reconstructed signal from the initial signal allows identification of preload loss of the bolted spherical joint. This method is demonstrated to be effective by a finite element simulation. Furthermore, the effect of preload loss of the bolted spherical joint on its ultimate flexural capacity is studied, which highlights the necessity for the non-destructive evaluation.https://www.mdpi.com/2075-5309/13/1/127space grid structurebolted spherical jointpreload lossnon-destructive evaluationtime reversal acousticslead zirconate titanate (PZT) |
| spellingShingle | Zheng Huang Zhengyu Gu Zuanfeng Pan Zhitao Zhang Yichao Yang Non-Destructive Evaluation of Preload Loss of Bolted Spherical Joints Based on Time Reversal Acoustics: A Numerical Simulation Buildings space grid structure bolted spherical joint preload loss non-destructive evaluation time reversal acoustics lead zirconate titanate (PZT) |
| title | Non-Destructive Evaluation of Preload Loss of Bolted Spherical Joints Based on Time Reversal Acoustics: A Numerical Simulation |
| title_full | Non-Destructive Evaluation of Preload Loss of Bolted Spherical Joints Based on Time Reversal Acoustics: A Numerical Simulation |
| title_fullStr | Non-Destructive Evaluation of Preload Loss of Bolted Spherical Joints Based on Time Reversal Acoustics: A Numerical Simulation |
| title_full_unstemmed | Non-Destructive Evaluation of Preload Loss of Bolted Spherical Joints Based on Time Reversal Acoustics: A Numerical Simulation |
| title_short | Non-Destructive Evaluation of Preload Loss of Bolted Spherical Joints Based on Time Reversal Acoustics: A Numerical Simulation |
| title_sort | non destructive evaluation of preload loss of bolted spherical joints based on time reversal acoustics a numerical simulation |
| topic | space grid structure bolted spherical joint preload loss non-destructive evaluation time reversal acoustics lead zirconate titanate (PZT) |
| url | https://www.mdpi.com/2075-5309/13/1/127 |
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