Abstract
The possibility of obtaining reliable numerical estimates by solving the problems of fracture mechanics is based on exact and accurate information about strength and stiffness of composites. To this end, new test methods are continuously being developed, and already existing ones checked and reconsidered. Regardless of the achieved progress in the field, separate test methods have been mastered to various extents. As before, the study of stiffness and, particularly, shear strength presents difficulties. It is exactly fracture in shear, which in many respects, limits the load carrying capacity of structures made from advanced types of composites [1,2]. An attempt at selecting and evaluating the most promising shear test methods for advanced fibrous composites (fiberglass-, carbon-, boron- and organic plastics), conducted on flat, tubular and ring specimens has been made in this survey. The obtained information has been presented in summary tables, containing the loading scheme, determinable characteristics, formulae for calculation, physical, structural and geometrical limitations. The survey contains some 20 loading schemes; the total number of loading schemes described in various sources is considerably greater (see, for instance, [3]). In general, test methods differ among themselves by the way and degree of minimization of “ballast” stresses and strains; it is practically impossible to generate the state of pure shear in specimens. The survey is based on the analysis of experimental data and experience of its authors over many years.
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© 1982 Martinus Nijhoff Publishers, The Hague
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Tarnopol’skii, Y.M., Kincis, T. (1982). Comparative Evaluation of Shear Test Methods for Composites. In: Sih, G.C., Tamuzs, V.P. (eds) Fracture of Composite Materials. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7609-2_33
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DOI: https://doi.org/10.1007/978-94-009-7609-2_33
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