Identification of Multiple Cracks in Composite Laminated Beams Using Perturbation to Dynamic Equilibrium
Identification of cracks in beam-type components is significant to ensure the safety of structures. Among the approaches relying on mode shapes, the concept of transverse pseudo-force (TPF) has been well proved for single and multiple crack identification in beams made of isotropic materials; howeve...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/18/6171 |
| _version_ | 1797517222031130624 |
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| author | Aimin Deng Maosen Cao Qitian Lu Wei Xu |
| author_facet | Aimin Deng Maosen Cao Qitian Lu Wei Xu |
| author_sort | Aimin Deng |
| collection | DOAJ |
| description | Identification of cracks in beam-type components is significant to ensure the safety of structures. Among the approaches relying on mode shapes, the concept of transverse pseudo-force (TPF) has been well proved for single and multiple crack identification in beams made of isotropic materials; however, there is a noticeable gap between the concept of TPF and its applications in composite laminated beams. To fill this gap, an enhanced TPF approach that relies on perturbation to dynamic equilibrium is proposed for the identification of multiple cracks in composite laminated beams. Starting from the transverse equation of motion, this study formulates the TPF in a composite laminated beam for the identification of multiple cracks. The capability of the approach is numerically verified using the FE method. The applicability of the approach is experimentally validated on a carbon fiber-reinforced polymer laminated beam with three cracks, the mode shapes of which are acquired through non-contact vibration measurement using a scanning laser vibrometer. In particular, a statistic manner is utilized to enable the approach to be feasible to real scenarios in the absence of material and structural information; besides, an integrating scheme is utilized to enable the approach to be capable of identifying cracks even in the vicinity of nodes of mode shapes. |
| first_indexed | 2024-03-10T07:13:44Z |
| format | Article |
| id | doaj.art-af7ea0c5c8f744b4b48fb32162f14c12 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T07:13:44Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-af7ea0c5c8f744b4b48fb32162f14c122023-11-22T15:12:45ZengMDPI AGSensors1424-82202021-09-012118617110.3390/s21186171Identification of Multiple Cracks in Composite Laminated Beams Using Perturbation to Dynamic EquilibriumAimin Deng0Maosen Cao1Qitian Lu2Wei Xu3Department of Engineering Mechanics, Hohai University, Nanjing 210098, ChinaDepartment of Engineering Mechanics, Hohai University, Nanjing 210098, ChinaDepartment of Engineering Mechanics, Hohai University, Nanjing 210098, ChinaDepartment of Engineering Mechanics, Hohai University, Nanjing 210098, ChinaIdentification of cracks in beam-type components is significant to ensure the safety of structures. Among the approaches relying on mode shapes, the concept of transverse pseudo-force (TPF) has been well proved for single and multiple crack identification in beams made of isotropic materials; however, there is a noticeable gap between the concept of TPF and its applications in composite laminated beams. To fill this gap, an enhanced TPF approach that relies on perturbation to dynamic equilibrium is proposed for the identification of multiple cracks in composite laminated beams. Starting from the transverse equation of motion, this study formulates the TPF in a composite laminated beam for the identification of multiple cracks. The capability of the approach is numerically verified using the FE method. The applicability of the approach is experimentally validated on a carbon fiber-reinforced polymer laminated beam with three cracks, the mode shapes of which are acquired through non-contact vibration measurement using a scanning laser vibrometer. In particular, a statistic manner is utilized to enable the approach to be feasible to real scenarios in the absence of material and structural information; besides, an integrating scheme is utilized to enable the approach to be capable of identifying cracks even in the vicinity of nodes of mode shapes.https://www.mdpi.com/1424-8220/21/18/6171multiple crack identificationcomposite laminated beamperturbation to dynamic equilibriumnon-contact vibration measurementlaser scanning |
| spellingShingle | Aimin Deng Maosen Cao Qitian Lu Wei Xu Identification of Multiple Cracks in Composite Laminated Beams Using Perturbation to Dynamic Equilibrium Sensors multiple crack identification composite laminated beam perturbation to dynamic equilibrium non-contact vibration measurement laser scanning |
| title | Identification of Multiple Cracks in Composite Laminated Beams Using Perturbation to Dynamic Equilibrium |
| title_full | Identification of Multiple Cracks in Composite Laminated Beams Using Perturbation to Dynamic Equilibrium |
| title_fullStr | Identification of Multiple Cracks in Composite Laminated Beams Using Perturbation to Dynamic Equilibrium |
| title_full_unstemmed | Identification of Multiple Cracks in Composite Laminated Beams Using Perturbation to Dynamic Equilibrium |
| title_short | Identification of Multiple Cracks in Composite Laminated Beams Using Perturbation to Dynamic Equilibrium |
| title_sort | identification of multiple cracks in composite laminated beams using perturbation to dynamic equilibrium |
| topic | multiple crack identification composite laminated beam perturbation to dynamic equilibrium non-contact vibration measurement laser scanning |
| url | https://www.mdpi.com/1424-8220/21/18/6171 |
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