The universal tensile testing machine has good scalability and can add various accessories and functional modules according to users' special needs. It is equipped with sensors and precision measurement systems, which can achieve high-precision measurement of force and displacement. Its measurement accuracy can usually reach one thousandth or even higher, ensuring the accuracy and reliability of the test results. The driving system of the testing machine has a wide range of speed regulation, and the appropriate loading speed can be selected according to different testing standards and sample characteristics. From studying the creep properties of materials at extremely slow speeds to simulating actual loading conditions at faster speeds, this flexibility enables the testing machine to adapt to various complex testing requirements and more accurately reflect the mechanical behavior of materials in practical use.
Measurement steps of universal tensile testing machine:
1. Preparation before the experiment:
-Environmental inspection: Ensure that the laboratory temperature and humidity meet the requirements, with a general temperature of 10 ℃ -35 ℃, relative humidity ≤ 80, and no electromagnetic interference, impact vibration, or corrosive media around.
-Equipment inspection: Check whether all components of the testing machine are intact and connected properly, such as power lines, data lines, etc. At the same time, adjust the equipment horizontally to ensure that the testing machine is in a horizontal state.
-Sample preparation: Take samples as required, check if the samples meet the requirements, and mark information such as specifications, materials, heat treatment batches, etc. Select appropriate fixtures based on the shape, size, and type of test sample, and install them correctly on the testing machine.
-Parameter setting: Turn on the power and control system of the testing machine, set the test parameters in the software, such as test speed, load range, sampling frequency, etc., create a new test record, and input the relevant information of the sample.
2. Install the sample: Fix one end of the sample in the upper fixture, use software operation or control box buttons to raise the lower fixture to the appropriate position, and then fix the other end of the sample in the lower fixture. Be careful not to subject the sample to tension or compression during clamping, and the length of the upper and lower clamping is generally about 2/3 of the fixture to ensure that the sample is vertically clamped.
3. Start the experiment: Click the "Start" button or other corresponding start button in the software, and the testing machine will start loading according to the set parameters. At the same time, the software will collect and record the test data in real time, such as load, displacement, time, etc.
4. Observation and recording: During the test process, closely observe the deformation, fracture, and other conditions of the sample. When the sample reaches the predetermined test state (such as fracture, yield, etc.) or abnormal conditions occur, stop the test in a timely manner. Save experimental data and curves for subsequent analysis.
5. Ending the experiment: After the experiment is completed, first turn off the loading system of the testing machine, and then remove the sample. Clean the fixture and testing machine working area, restore the testing machine to its initial state, and turn off the software and power.