Bending collapse characteristics of thin-walled tubes using pure bending test machine.

A 4-point pure bending test machine is developed to evaluate the pure bending moment-rotation properties of the thin-walled tubes without imposing shear and tensile forces. The moment-rotation properties of the thin-walled tubes are measured up to and beyond collapse with the pure bending test machine. The test results are compared with those of finite element analyses and existing analytical solution. For the covering abstract see ITRD E116488.