DEFORMATION AND FAILURE OF ANGLE-PLIED ORGANIC FIBER-REINFORCED PLASTICS IN THE 3D STRESS STATE

Tubular specimens of organic fiber-reinforced plastic (OFRP) are teste d in, tension under a high hydrostatic pressure of up to 300 MPa. The specimens are made by winding at an angle of +/-60 degrees to the gene ratrix. The experimental equipment and technique are described. The te sts show the insignificant effect of hydrostatic pressure on the elast ic properties and the failure mode of the OFRP. The hydrostatic pressu re considerably affects the strength properties of the OFRP. The mater ial strength increases almost twofold under a pressure of 300 MPa. The failure strains of the material increase significantly as well.