How does Microcomputer Controlled Electronic Universal Testing Machine accurately perform tensile tests on a variety of materials?
Publish Time: 2024-11-21
Microcomputer Controlled Electronic Universal Testing Machine is a high-precision device widely used in mechanical property testing of materials, which can accurately perform tensile tests on a variety of materials.
Main unit: including frame, fixture, transmission system, etc., used to fix and load specimens.
Drive system: usually using servo motor and ball screw to provide high-precision force and displacement control.
Sensor: including force sensor and displacement sensor, used to measure force and deformation in real time.
Controller: using microprocessor or PLC, responsible for test process control and data acquisition.
Software system: used to set test parameters, control test process, data processing and result analysis.
2. Preparation before the test
Specimen preparation: prepare tensile specimens that meet the requirements according to international or national standards The size, shape and processing accuracy of the specimen directly affect the accuracy of the test. Prepare standard tensile specimens to ensure that their size, shape and processing accuracy meet the requirements and reduce test errors.
Equipment calibration: Before the test begins, the testing machine must be calibrated to ensure the accuracy and reliability of the measurement system. Calibration includes calibration of force sensors, calibration of displacement sensors, temperature compensation, etc. to ensure the accuracy and reliability of the measurement system.
Test parameter setting: Test parameters such as loading rate, test temperature, sampling frequency, etc. are set through the software system. Reasonable test parameter settings can ensure the stability of the test process and the accuracy of the results.
3. Test process control
Force control mode: In force control mode, the testing machine stretches the specimen at a constant force loading rate. The force sensor monitors the applied force in real time, and the controller adjusts the motor output according to the set rate to ensure the accuracy of force loading. This mode is suitable for tests that require precise control of force.
Displacement control mode: In displacement control mode, the testing machine stretches the specimen at a constant displacement loading rate. The displacement sensor monitors the deformation of the specimen in real time, and the controller adjusts the motor output according to the set rate to ensure the accuracy of displacement loading. This mode is suitable for tests that require precise control of deformation.
Strain control mode: In strain control mode, the test machine monitors the strain of the specimen in real time through strain gauges or other strain measuring devices, and the controller adjusts the motor output according to the set strain rate to ensure the accuracy of strain loading. This mode is suitable for high-precision strain control tests.
Real-time monitoring and data acquisition: During the test, the force sensor, displacement sensor and temperature sensor collect data in real time and transmit it to the software system through the controller. The software system displays the test curves (such as force-displacement curves, stress-strain curves) in real time and records the test data. Real-time monitoring and data acquisition can ensure the accuracy and integrity of the data during the test.
4. Data processing and analysis
Curve fitting and analysis: The test data is processed by the software system to generate stress-strain curves, force-displacement curves, etc., and curve fitting and analysis are performed. By analyzing the curves, the mechanical properties parameters such as yield strength, tensile strength, elastic modulus, and elongation at break of the material can be obtained. Curve fitting and analysis can accurately evaluate the mechanical properties of the material.
Result output and report generation: The test results and analysis data are output as reports, including test parameters, curve graphs, mechanical properties data, etc. The report can be saved as an electronic document or printed out for subsequent analysis and comparison. Result output and report generation can provide comprehensive test results and analysis reports.
5. Practical application cases
Metallic materials: In the tensile test of metal materials, the Microcomputer Controlled Electronic Universal Testing Machine can accurately measure its yield strength, tensile strength, elastic modulus and other performance parameters, providing reliable data for material design and engineering applications. For example, the testing of titanium alloys, steel and other materials in the aerospace field.
Composite materials: The tensile test of composite materials requires high-precision control and monitoring. Through appropriate fixtures and loading methods, the Microcomputer Controlled Electronic Universal Testing Machine can accurately evaluate its mechanical properties and provide a basis for the design and manufacture of composite materials. For example, the test of carbon fiber reinforced composite materials.
Polymer materials: In the tensile test of polymer materials, the Microcomputer Controlled Electronic Universal Testing Machine can measure its elongation at break, stress-strain curve, etc., providing data support for the research and application of polymer materials. For example, the testing of plastics, rubber and other materials.
Biomaterials: In the tensile test of biomaterials, the mechanical properties can be measured by Microcomputer Controlled Electronic Universal Testing Machine, providing data support for biomedical engineering and tissue engineering. For example, tests of artificial bones, bioactive materials, etc.
Microcomputer Controlled Electronic Universal Testing Machine can accurately perform tensile tests on a variety of materials through its precise control system and data acquisition capabilities. Through precise force control, displacement control and strain control modes, the testing machine can ensure the stability of the test process and the accuracy of the data. Real-time monitoring and data acquisition further enhance the credibility of the test. Through data processing and analysis, the mechanical performance parameters of the material can be obtained, providing a reliable basis for material research and engineering applications.
