Internal Friction of a 2D-C/SiC Composite from 25 deg C to 400 deg C

By means of forced non-resonance under 3-point bending method, the internal frictions of 2D-C/SiC composites are carried out from 25 deg C to 400 deg C in air. The effects of temperature, amplitude and frequency on internal frictions have been analyzed. Results show that interface layer plays a domi...

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Bibliographic Details
Published in:Key engineering materials 2007-01, Vol.353-358, p.1509-1512
Main Authors: Hou, Juntao, Qiao, Shengru, Lu, Guofeng, Zhang, Chengyu, Zhang, Yuebing
Format: Article
Language:English
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Summary:By means of forced non-resonance under 3-point bending method, the internal frictions of 2D-C/SiC composites are carried out from 25 deg C to 400 deg C in air. The effects of temperature, amplitude and frequency on internal frictions have been analyzed. Results show that interface layer plays a dominant role to internal friction. When temperature increases from 25 deg C to 400 deg C, internal friction of 2D-C/SiC composite increases slightly, and storage modulus decreases monotonically. With frequency increases from 1Hz to 100Hz, internal friction reduces to a minimum around 10Hz, whereas above 50Hz it arises sharply. In amplitude scale from 0.5mum to 10mum, internal friction increases linearly with the increase of amplitude.
ISSN:1013-9826