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http://dx.doi.org/10.3795/KSME-A.2005.29.2.318

A Study on the Prediction of Elastic Modulus in Short Fiber Composite Materials  

Kim Hong Gun (전주대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.29, no.2, 2005 , pp. 318-324 More about this Journal
Abstract
Theoretical efforts are performed to extend the formulation of NSLT(New Shear Lag Theory) for the prediction of the elastic modulus in short fiber composite. The formulation is based on the elastic stress transfer considering the stress concentration effects influenced by elastic modulus ratio between fiber and matrix. The composite modulus, thus far, is calculated by changing the fiber aspect ratio and volume fraction. It is found that the comparison with FEA(Finite Element Analysis) results gives a good agreement with the present theory (NSLT). It is also found that the NSLT is more accurate than the SLT(Shear Lag Theory) in short fiber regime when compared by FEA results. However, The modulus predicted by NSLT becomes similar values that of SLT when the fiber aspect ratio increases. Finally, It is shown that the present model has the capability to predict the composite modulus correctly in elastic regime.
Keywords
Composites; Elastic Modulus; FEA; Fiber Aspect Ratio; Fiber Volume Fraction; SLT; NSLT;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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