Mastering the correct operation method of polymer material tensile testing machine can help improve the repeatability of experiments

Update time: 2026-06-10 Views: 18

The polymer material tensile testing machine is a key equipment for evaluating the mechanical properties of materials such as plastics, rubber, and fibers. By applying axial tension, the stress-strain curve is obtained to determine parameters such as tensile strength and elongation at break. To ensure the accuracy of test data and equipment safety, it is necessary to strictly follow the operating procedures. Mastering the correct operation method of polymer material tensile testing machine can help improve the repeatability of experiments; Adhering to the correct operation method of polymer material tensile testing machine in daily use can also effectively extend the service life of the equipment.

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1. Preparation before the experiment: Check whether the equipment power supply, gas source (if applicable), and fixtures are intact, and confirm that the sensor range matches the strength of the tested material. Clean the upper and lower clamps to avoid residual debris affecting the clamping effect. Cut the sample according to the standard (such as GB/T1040 or ISO527), ensure that the size and shape meet the requirements, and adjust it for a certain time in the constant temperature and humidity environment.

2. Install the sample: Place the sample symmetrically into the upper and lower fixtures to avoid eccentric loading. For thin films or soft materials, clamps with pads or pneumatic clamping devices can be used to prevent slipping. The clamping length should be moderate. If it is too short, it may cause local stress concentration, while if it is too long, it may affect the measurement of gauge length.

3. Set parameters: Enter the sample type, gauge length, testing speed (usually 1-500mm/min, depending on the material), and stopping conditions in the control software. Some devices support automatic recognition of extensometer signals and require pre calibration of displacement zero points.

4. Run test: Confirm that the protective cover is closed and personnel are away from moving parts before starting. After clicking start, the device uniformly stretches the sample and records real-time load and displacement data. If the sample does not fracture within the gauge length, the data should be invalidated and the cause analyzed.

5. Data processing and storage: After the experiment is completed, the software automatically generates stress-strain curves and key mechanical indicators. Export raw data and backup, while clearing invalid running records to keep the database clean.

6. Equipment maintenance: Turn off the power of the host and computer, clean the fixtures and workbench residue. Regularly lubricate transmission components, calibrate force sensors and extensometers to ensure long-term measurement accuracy.