Function and Working Principle of Universal Material Testing Machine

Universal material testing machine is widely used in engineering field, the main function is to test and evaluate the mechanical properties and material strength of different materials.

It can perform different types of mechanical tests such as tension, compression, bending, shearing, etc. on various materials such as metal, plastic, rubber, fiber, etc.

The principle of universal material testing machine is based on the mechanical behavior and material properties of materials.

Usually, the test sample will be placed in the fixture on the testing machine, and then force or load will be applied to observe and measure the mechanical properties of the material. The testing machine calculates and evaluates the strength, elastic modulus, elongation and other parameters of the material by recording and analyzing the force applied to the sample and the deformation of the sample.

Universal material testing machine usually consists of load frame, sensor, control system and data acquisition system. The load frame is used to install the sample and apply force or load the sample.

The sensor is usually a displacement sensor, strain gauge, etc., which is used to measure the deformation of the sample. The control system can apply and monitor the force and deformation of the sample according to the experimental requirements. The data acquisition system is used to record and store the data during the test and conduct subsequent analysis.

Universal material testing machine can be used for a variety of experimental types. For example, tensile test is one of the most common types of tests. In a tensile test, the specimen is fixed by a fixture and then a tensile force is applied until the specimen breaks or cannot withstand the force. By measuring the stress and strain of the specimen, its elastic modulus, yield strength, tensile strength and other parameters can be calculated. Similarly, compression tests can be used to test the compressive properties of materials, bending tests can be used to evaluate the bending stiffness and strength of materials, and shear tests are used to measure the shear strength of materials.

By using a universal material testing machine, engineers and scientists can obtain important data about the characteristics and properties of materials. This data is essential for the design, selection and optimization of materials. In addition, universal material testing machines can also be used in quality control, product development, research and education. Due to its wide range of applications and accurate test results, universal material testing machines are indispensable equipment in engineering laboratories and material research institutions.