The structure and properties of a composite material (basalt-fibre-reinforced plastic) reinforced by chaotically distributed discrete fibres were determined at the design stage with account taken of the fibre diameter, the critical length of the fibres, the arrangement of fibres within the matrix, and the stress distribution over the length of the fibres. The results of calculation were used in the manufacture of specimens of thermoplastic polymeric material by the developed technology. The given results of experimental investigation of specimens of the thermoplastic material showed that the calculated values of the properties of the composite differ little from experimental values.
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