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: Hui Li, Yi Niu, Chao Mu, Bangchun Wen
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2017/6395739
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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.
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institution Kabale University
issn 1070-9622
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publishDate 2017-01-01
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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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AT yiniu identificationoflossfactoroffiberreinforcedcompositebasedoncomplexmodulusmethod
AT chaomu identificationoflossfactoroffiberreinforcedcompositebasedoncomplexmodulusmethod
AT bangchunwen identificationoflossfactoroffiberreinforcedcompositebasedoncomplexmodulusmethod