Novel test method for measuring circumferential elastic modulus and Poisson's ratio of composite pipe

The invention discloses a novel test method for measuring the circumferential elastic modulus and Poisson's ratio of a composite pipe, which is called as an arc-shaped test piece tensile test method. According to the method, the circumferential elastic modulus and Poisson's ratio of the composite pipe are measured by tensioning an arc-shaped test piece cut along the circumferential direction of the composite pipe, and two wedge-shaped self-locking clamps for fixing the end parts of the arc-shaped test piece are respectively connected with a tensile testing machine through a specially designed one-way hinge for absorbing out-of-plane bending deformation of the arc-shaped test piece in the initial test stage. In addition, the test method provides specific and definite provisions for preparation of the arc-shaped test piece, a tensile test device, a tensile loading system, a circumferential elastic modulus and Poisson's ratio calculation method, the application range of the test method and the like. The method i