A universal testing machine designed for physical experiments on thin films is an essential tool for evaluating the mechanical properties of thin materials. These machines are capable of performing a variety of tests, including tensile, tear, shear, and indentation tests, which are crucial for assessing the strength, flexibility, and durability of thin films used in various industries.

1. **Tensile Testing**: This test determines the tensile strength, elongation at break, and modulus of elasticity of thin films. It is performed by stretching the film sample to the point of rupture while measuring the force and extension. The ASTM D882 standard is often referenced for tensile testing of thin plastic films with a thickness of less than 1.0 mm (0.04 in), which is significant in the film packaging industry for quality control and research and development .

2. **Tear Testing**: Tear tests measure the resistance of a film to tearing once a tear has started. This is important for materials that need to resist tearing during use.

3. **Shear Testing**: Shear tests determine the film's resistance to deformation when forces are applied parallel to the surface. This can be relevant for applications where the film is subjected to shearing forces.

4. **Indentation Testing**: Nanoindentation is a technique used to measure the hardness and elastic modulus of thin films. It involves indenting the film with a small tip and measuring the displacement and force, which can provide insights into the film's mechanical properties without the influence of the substrate .

Universal testing machines for thin films need to be precise and sensitive enough to handle the small forces and displacements typical of thin materials. They often include features such as digital indicators for measuring strain with high resolution, stepper motors for controlled displacement, and software for data acquisition and analysis. The machines may also be equipped with specialized grips and fixtures to securely hold the thin film samples without causing damage during testing.

These testing machines are crucial for the development and quality control of thin films used in applications such as electronics, packaging, and coatings, where the mechanical properties of the film can significantly impact the performance and reliability of the final product.

Basic parameters：

1 Max test force 1kN-5kN （Multiple options available）

2 Test range 0.4%--100%

3 Test accuracy 优于示值±0.5%

4 Test force division six

5 Measurement accuracy of beam displacement More than 0.025mm

6 Deformation measurement accuracy ±0.5%（From 0.2 to 10mm）

7 Test speed range 0.01 -- 500mm/min, stepless speed regulation

8 Velocity control accuracy ±1%

9 Constant force, constant deformation, constant displacement control range 0.2%-100% FS

10 Constant force, constant deformation, constant displacement control accuracy When the set value is <10%FS, the set value is within ±1.0%;

When the set value is ≥10%FS, the set value is within ±0.1%

11 Control accuracy of deformation rate When the rate is less than 2%FS, it is within the set value of ±2.0%;

When the rate is ≥2%FS, it is within the set value of ±0.5%

12 Test space A: tensile space :600mm 

                    B: compression space :600mm 

C: width space: 400mm

13 Power supply 1 phase, 220V, 50Hz

14 Work environment Room temperature - 35℃, relative humidity does not exceed 80%

15 Host machine size 760×520×1950mm

16 Weight 550kg