Abstract: The biaxial tension device is presented which can research the equibiaxial tension low cycle fatigue tests with uniaxial hydraulic fatigue testing machine and reference influencing factors are dicussed
The tests make use of the low cycle fatigue test machine of loot. The device has been sustained fatigue loading about one million times concluding subjected alternative load amplitude of 5.5t about two hundred thousands times. These components which are assemblies of the device are good in use and suitable for requirement.The cruciform specimens for biaxial fatigue tests has been cracked successfully in internal hole. The primary results are obtained on the device to study impeller material properties under the condition of super velocity. The device is suitable to studying the low fatigue properties under concentration of plane stress. It is used to study the fatigue crack growth under biaxial load when it make use of high and intermediate cycle fatigue hydraulic fatigue testing machine.
This paper pointed out that the device will require further improvement.