Application of video extensometer on universal testing machine

As a core upgraded accessory of the universal testing machine, the video extensometer has broken through the limitations of traditional contact extensometers with non-contact measurement technology and has become a key equipment in the field of material mechanics performance testing. It collects deformation images of samples through high-definition cameras, and combines intelligent algorithms to analyze displacement changes in the gauge length section in real time. It accurately outputs core parameters such as elongation and elastic modulus, and is widely applicable to tensile, compressive, bending and other tests of various types of samples such as metals, composite materials, and polymer materials.

In terms of application advantages, video extensometers completely solve the problem of damage to fragile specimens in contact measurement, especially suitable for testing easily deformed or surface sensitive specimens such as films, fibers, brittle materials, etc., avoiding measurement errors caused by clamping forces. Its measurement range can be flexibly adjusted, accurately capturing from micrometer level micro strain to large amplitude deformation. It also has the characteristics of anti electromagnetic interference and strong environmental adaptability, and can maintain stable performance in special test environments such as high and low temperatures.

In the universal testing machine system, the video extensometer can achieve seamless collaboration with the host, synchronize test data in real time to the control system, support dynamic display of curves and automatic storage of data, and greatly improve testing efficiency. In industries such as automobile manufacturing, aerospace, and new material research and development, its high-precision measurement capability provides a reliable basis for material selection and product quality control - for example, in metal material tensile testing, it can accurately capture the deformation law before and after the yield point; In the bending test of composite materials, the interlayer deformation coordination can be effectively analyzed.

In addition, the intelligent operation design of the video extensometer reduces human errors, and ensures the repeatability and accuracy of test results through automatic identification of gauge length and real-time calibration compensation function. Its application not only promotes the upgrading of measurement technology for universal testing machines, but also helps enterprises achieve the transformation from traditional detection to precise and efficient testing, providing strong technical support for material science research and industrial production.