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Statistical Analysis on High Strain Rate Tensile Strength of T700 Carbon Fiber

[+] Author Affiliations
Yang Wang, Yuanming Xia

University of Science and Technology of China, China

Yuanxin Zhou, Shaik Jeelani

Tuskegee University, Tuskegee, AL

Paper No. IMECE2007-42857, pp. 557-560; 4 pages
doi:10.1115/IMECE2007-42857
From:
  • ASME 2007 International Mechanical Engineering Congress and Exposition
  • Volume 10: Mechanics of Solids and Structures, Parts A and B
  • Seattle, Washington, USA, November 11–15, 2007
  • Conference Sponsors: ASME
  • ISBN: 0-7918-4304-1 | eISBN: 0-7918-3812-9
  • Copyright © 2007 by ASME

abstract

Tensile mechanical behavior of T700 fiber bundles have been studied in the strain rate range from 0.001 l/s to 1000 l/s and complete stress strain curves were obtained. Results show that both ultimate strength and failure strain are strain rate insensitive, and T700 carbon fiber can be regarded as strain rate insensitive materials. On basis of the fiber bundles model and the statistic theory of fiber strength, a statistical constitutive model based on Weibull distribution function has been developed to describe mechanical behavior of T700 fiber. And a method for determine the statistic parameters of fibers by tensile tests of fiber bundles is established, too. The simulated stress strain curves from the model are in good agreement with the test data. Simulated results show that the strength of T700 fiber can be described by single Weibull distribution function.

Copyright © 2007 by ASME

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