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http://dx.doi.org/10.7234/composres.2016.29.5.299

Determination of Degraded Fiber Properties of Laminated CFRP Flat Plates Using the Bivariate Gaussian Distribution Function  

Kim, Gyu-Dong (Department of Civil Engineering, Andong National University)
Lee, Sang-Youl (Department of Civil Engineering, Andong National University)
Publication Information
Composites Research / v.29, no.5, 2016 , pp. 299-305 More about this Journal
Abstract
This paper presents a method to detect the fiber property variation of laminated CFRP plates using the bivariate Gaussian distribution function. Five unknown parameters are considered to determine the fiber damage distribution, which is a modified form of the bivariate Gaussian distribution function. To solve the inverse problem using the combined computational method, this study uses several natural frequencies and mode shapes in a structure as the measured data. The numerical examples show that the proposed technique is a feasible and practical method which can prove the location of a damaged region as well as inspect the distribution of deteriorated stiffness of CFRP plates for different fiber angles and layup sequences.
Keywords
Bivariate Gaussian Function; Carbon fiber-reinforced polymer; Layup sequence; Inverse problem;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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