Sensitivity of the Carbon Fiber Interface in Epoxy

Abstract:

In order to improve the gauge factor of polymer-matrix carbon fiber reinforced composites (CFRP) for strain sensing, the carbon fiber sensitive interface was constructed in epoxy by effectively overlapping the CFRP laminates in local area. The strain sensitivities of the carbon fiber interface were proved by the cyclic tension test on the base specimens covered by the carbon fiber composites with the sensitive interface, and their much bigger gauge factors were revealed by the comparison with the polymer-matrix continuous carbon fiber composite. The sensitivity of the carbon fiber interface is originated from the change of the interfacial points due to the interfacial stress.

• Periodical: Applied Mechanics and Materials (Volume 69)
• Pages: 79-82
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.69.79
• Online since: July 2011
• Authors: Hua Sheng Zheng, Si Rong Zhu, Zhuo Qiu Li, Jing Li
• Keywords: Carbon Fiber (CF), Epoxy, Interface Resistance, Strain Sensitivity

References

[1] S. Wang and D.D.L. Chung: Polym Compos. Vol. 21(2000), p.13.

[2] Shoukai Wang and D.D.L. Chung: Carbon. Vol. 44(2006), p.2739.

[3] Sirong Zhu and D.D.L. Chung: Carbon. Vol. 45(2007), p.1606.

[4] N. Angelidis, C.Y. Wei and P.E. Irving: Compos. Papers Part A. Vol. 35(2004), p.1135.

[5] Akira Todoroki, Yusuke Samejima, Yoshiyasu Hirano and Ryosuke Matsuzaki: Composites Science and Technology. Vol. 69(2009), p.1841.