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Structural Analysis of Discontinuous Long-Fiber Composite Angle Bracket

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Structural Analysis of Discontinuous Long-Fiber Composite Angle Bracket Based on Computed Tomography Data

 

The aim of this present study is to assess the structural performance of a random discontinuous long-fiber (DLF) thermoplastic composite angle bracket by integrating computed tomography (CT) data and finite element (FE) stress analysis. The L-shape angle bracket with a center rib used in this study is a common geometry bracket that can be found as attached in many airframe structures. A nondestructive CT fiber orientation evaluation integrated with micromechanics-based multi-scale stress analysis for nonlinear and progressive damage analyses of the DLF angle bracket is performed. The CT data from nondestructive inspection (NDI) is utilized for analysis of fiber orientation and transferred to the FE model for stress analysis to predict the structural response and failure locations of the DLF angle bracket. A comparison of the structural analysis results based on CT data with the experimental results of the DLF angle bracket is reported. Distribution of fiber orientation of the DLF angle bracket is successfully imaged with CT, and the stress analysis shows good agreement with the experimental test results of the DLF angle bracket.

 

Authors: Joo H. Han, Ph.D., and M. Hakan Kilic, Ph.D. 

 

Conference: SAMPE Seattle 2017

 

SKU/Code: SE17--0635

Pages: 10



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