Dr. Jianzhi Li Profile

Dr. Jianzhi Li

at Shijiazhuang Tiedao Univ

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Proceedings Article | 3 April 2012 Paper

Damping properties of fiber reinforced composite suitable for stayed cable

Jianzhi Li, Baochen Sun, Yanliang Du

Proceedings Volume 8409, 84090T (2012) https://doi.org/10.1117/12.920368

KEYWORDS: Composites, Carbon, Glasses, Interfaces, Epoxies, Fiber reinforced polymers, Bridges, Vibration control, Structured optical fibers, Lithium

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Carbon fiber reinforced plastics (CFRP) cables were initially most investigated to replace steel cables. To further explore the advantages of FRP cables, the potential ability of vibration control is studied in this paper emphasizing the designable characteristic of hybrid FRP cables. Fiber reinforced vinyl ester composites and fiber reinforced epoxy composites were prepared by the pultrusion method. Due to the extensive application of fiber reinforced composites, the temperature spectrum and frequency spectrum of loss factor for the composite were tested using dynamic mechanical analysis (DMA) equipment. The damping properties and damping mechanism of the composite were investigated and discussed at different temperatures and frequencies. The result indicates that the loss factor of the composites is increasing with the increase of the frequency from 0.1Hz to 2 Hz and decreasing with the decrease of the temperature from -20°C to 60°C. The loss factor of the carbon fiber composite is higher than that of the glass fiber for the same matrix. The loss factor of the vinyl ester composite is higher than that of the epoxy composite for the same fiber.

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