Abstract
It is proposed to use the fracture model and the criterion equation of a generalized crackresistance diagram in two-parameter fracture macromechanics to estimate cracking resistance and construct crack-resistance diagrams of polymer composite materials in tension and compression; these fracture model and criterion equation take into account the degree of restraint of deformations near the crack tip in the form of nonsingular T-stresses. A good agreement between the experimental values of normalized stress-intensity factors and a diagram of the calculated crack-resistance of polymer composite materials has been obtained in a wide range of crack lengths using various geometry and arrangements of specimen loading for seven carbon plastics with various orderings produced by different manufacturers using pressure-chamber and infusion methods.
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Original Russian Text © Yu.G. Matvienko, V.V. Konovalov, A.V. Pankov, M.M. Semenova, 2015, published in Problemy Mashinostroeniya i Nadezhnosti Mashin, 2015, No. 6, pp. 42–52.
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Matvienko, Y.G., Konovalov, V.V., Pankov, A.V. et al. Crack-resistance diagrams of polymer composite materials in tension and compression. J. Mach. Manuf. Reliab. 44, 520–530 (2015). https://doi.org/10.3103/S1052618815060102
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DOI: https://doi.org/10.3103/S1052618815060102