Abstract
Unidirectional composites (UCs) are bundles of monofibres assembled as a thread and surrounded by a matrix. Properties of unidirectional composites differ considerably from features of a fibre bundle not impregnated by a matrix. The reason for this is the presence of fibre defects. As mentioned in Chapter 5, monofibres have a spread in strength properties due to the presence of microcracks in them. When the whole thread is loaded, its fibres break one at a time beginning with the weakest ones. In a non-impregnated bundle a destroyed fibre makes rio contribution to the total strength of the thread; in a UC, due to tangential stresses in its matrix, the destroyed fibre does contribute; only some section L neff of monofibre around the break does not contribute to the strength.
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© 1999 Springer Science+Business Media Dordrecht
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Dimitrienko, Y.I. (1999). Unidirectional Composites under High Temperatures. In: Thermomechanics of Composites under High Temperatures. Solid Mechanics and Its Applications, vol 65. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9183-6_6
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DOI: https://doi.org/10.1007/978-94-015-9183-6_6
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-5122-6
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