Identification of Loss Factor of Fiber-Reinforced Composite Based on Complex Modulus Method
The identification of the loss factor of fiber-reinforced composite based on complex modulus method is presented. Firstly, the damping model of fiber-reinforced composite plate is established, and the relation between each loss factor and modal damping ratio is deduced based on the complex modulus m...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2017/6395739 |
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| _version_ | 1832568160295845888 |
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| author | Hui Li Yi Niu Chao Mu Bangchun Wen |
| author_facet | Hui Li Yi Niu Chao Mu Bangchun Wen |
| author_sort | Hui Li |
| collection | DOAJ |
| description | The identification of the loss factor of fiber-reinforced composite based on complex modulus method is presented. Firstly, the damping model of fiber-reinforced composite plate is established, and the relation between each loss factor and modal damping ratio is deduced based on the complex modulus method. Then, the least square relative error function is formed by using the modal damping ratio obtained in the experimental test, and the appropriate step-size is selected in the range of 0~10% to calculate the loss factor. Next, the identification procedure of loss factor of such composite material is summarized, and the corresponding identification procedure is realized based on self-designed MATLAB program. Finally, TC300 carbon/epoxy composite plate is taken as an example to carry out a case study, and its loss factors along the longitudinal, transverse, and shear direction are identified by the complex modulus method. By comparing the measured damping results obtained in this paper and the calculated damping results based on the Adams-Bacon model with the same loss factor, it is found that the corresponding maximum deviation between them is less than 15%, so the correctness of such identification method has been verified indirectly, which can be used to identify loss factor of fiber-reinforced composite with high precision and efficiency. |
| format | Article |
| id | doaj-art-9aad3bd2384b4b12a9eea18e12b35344 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-9aad3bd2384b4b12a9eea18e12b353442025-02-03T00:59:35ZengWileyShock and Vibration1070-96221875-92032017-01-01201710.1155/2017/63957396395739Identification of Loss Factor of Fiber-Reinforced Composite Based on Complex Modulus MethodHui Li0Yi Niu1Chao Mu2Bangchun Wen3School of Mechanical Engineering and Automation, Northeastern University, No. 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaSchool of Mechanical Engineering and Automation, Northeastern University, No. 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaSchool of Mechanical Engineering and Automation, Northeastern University, No. 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaSchool of Mechanical Engineering and Automation, Northeastern University, No. 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaThe identification of the loss factor of fiber-reinforced composite based on complex modulus method is presented. Firstly, the damping model of fiber-reinforced composite plate is established, and the relation between each loss factor and modal damping ratio is deduced based on the complex modulus method. Then, the least square relative error function is formed by using the modal damping ratio obtained in the experimental test, and the appropriate step-size is selected in the range of 0~10% to calculate the loss factor. Next, the identification procedure of loss factor of such composite material is summarized, and the corresponding identification procedure is realized based on self-designed MATLAB program. Finally, TC300 carbon/epoxy composite plate is taken as an example to carry out a case study, and its loss factors along the longitudinal, transverse, and shear direction are identified by the complex modulus method. By comparing the measured damping results obtained in this paper and the calculated damping results based on the Adams-Bacon model with the same loss factor, it is found that the corresponding maximum deviation between them is less than 15%, so the correctness of such identification method has been verified indirectly, which can be used to identify loss factor of fiber-reinforced composite with high precision and efficiency.http://dx.doi.org/10.1155/2017/6395739 |
| spellingShingle | Hui Li Yi Niu Chao Mu Bangchun Wen Identification of Loss Factor of Fiber-Reinforced Composite Based on Complex Modulus Method Shock and Vibration |
| title | Identification of Loss Factor of Fiber-Reinforced Composite Based on Complex Modulus Method |
| title_full | Identification of Loss Factor of Fiber-Reinforced Composite Based on Complex Modulus Method |
| title_fullStr | Identification of Loss Factor of Fiber-Reinforced Composite Based on Complex Modulus Method |
| title_full_unstemmed | Identification of Loss Factor of Fiber-Reinforced Composite Based on Complex Modulus Method |
| title_short | Identification of Loss Factor of Fiber-Reinforced Composite Based on Complex Modulus Method |
| title_sort | identification of loss factor of fiber reinforced composite based on complex modulus method |
| url | http://dx.doi.org/10.1155/2017/6395739 |
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