A unit for mechanical testing of tubular specimens of fibrous composite materials

A test unit for testing tubular specimens of fibrous composite materials is described. The main components of the test unit are: devices for producing axial tension, axial compression, and an internal pressure load - singly or in a combination of them; tensometric devices for measuring high strains; a computer-aided data processing system. A block diagram of the test unit, sectional views of the load devices, the scheme of placement of the strain gauges on the test specimens, and stress-strain diagrams at different load steps are presented.