Stretching is the most basic experiment of material mechanics, and some basic mechanical properties of materials, such as elastic modulus, strength and plasticity, can be measured by stretching.

Principle of tensile testing machine: The power source of the main machine is the motor, which drives the movable beam to move up and down through the deceleration device and the lead screw, so that the sample is stretched and deformed. The force sensor installed on the movable beam or frame measures the force value in the deformation process of the specimen, that is, the load value; At the same time, the rotation of the lead screw drives a photoelectric encoder inside the main machine, which is converted into the displacement value of the movable beam through the controller. Load and displacement signals are displayed or calculated by computer.

The tensile testing machine includes:

1. Tensile test of metal materials

2. Non-metallic material tensile testing machine