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Prediction on coeff icient of thermal expansion for 22D braided C/ SiC composites[J]. Acta Materiae Compositae Sinica, 2008, 25(2): 109-114.
Citation: Prediction on coeff icient of thermal expansion for 22D braided C/ SiC composites[J]. Acta Materiae Compositae Sinica, 2008, 25(2): 109-114.
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Prediction on coeff icient of thermal expansion for 22D braided C/ SiC composites

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  • Received Date: May 29, 2007
  • Revised Date: September 05, 2007
    Abstract
  • A unit cell model based on meso - structure and preparation procedure is presented for the in-plane
    coefficient of thermal expansion (CTE) of 22D braided C/ SiC composites. In this unit cell model the actual st rand cross-2 section geometry and possible gap between two adjacent st rands are taken into account . The influence of st ructure parameters on the 22D braided C/ SiC composites?coefficient of thermal expansion was predicted. The predicted result s show that the composites?CTE increases with increase of kinking distance , but decreases with increase of fiber volume fraction and void volume f raction. The test result shows that there is a good correlation between the predicted result s and the experimental values.
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