New breakthroughs in precision measurement - the development of a new in-situ mechanical measuring instrument

Recently, the Expert Group of the High-Tech Research and Development Center of the Ministry of Science and Technology organized a technical acceptance of the 863 program “Development and Manufacturing of New Technologies and Equipment for Cross-Scale In-situ Mechanics Testing” led by Jilin University. The expert group believes that the subject has broken through a number of key technologies for micro-nano-scale measurement, developed a series of measuring instruments, achieved the expected goals, and agreed to pass the acceptance.

With the development of industrial clusters such as new materials, aerospace and high-end manufacturing industries, the requirements for material service performance testing and support capabilities continue to increase, and the demand for material micromechanical performance testing technology and instrument development in academia and industry is growing rapidly. In this regard, with the support of the 863 Program, Jilin University and other units have carried out the development and research of new technologies and equipment for cross-scale in-situ mechanical testing. After three years of research, the research team has overcome the key technologies of design, manufacture and calibration of in-situ mechanical testing equipment, breaking through the technical bottleneck of in-situ testing instrument accuracy calibration, making the loading force resolution up to 10mN and loading displacement resolution excellent. At 100nm, many indicators have made breakthroughs. Compared with the traditional material mechanical property testing technology, the instrument developed by this project can be compatible with various material property characterization techniques such as scanning electron microscope, Raman spectroscopy and metallographic microscope. Material mechanical parameters, micromechanical behavior, deformation damage mechanism and micro-structural evolution multi-parameter in-situ precision test. The research team has mastered the key technologies of industrialization of micro-measurement instrumentation and formed a benign mechanism for the transformation of patent results. The indentation/scouring, stretching/compression, shearing, bending, torsion and stretching were developed. Twisting composites and other 17 types of 17 instruments and their supporting analysis and processing software have filled the blank of related instruments in China. The results of this project have been demonstrated and applied in more than 20 universities and research institutes including Peking University, Zhejiang University, Beijing University of Technology and Jinan Casting and Forging Institute.

The acceptance of this subject indicates that China has mastered the micro-mechanical performance testing instruments with independent intellectual property rights and the core key technologies of mass production, and realized the breakthrough of China's independent intellectual property in-situ testing instruments, and improved the technology of independent research and development of instruments in China. The level has promoted the transformation and upgrading of the traditional testing machine industry, enriched the existing mechanical properties testing theory, technology and standard system, and played an important role in personnel training, discipline construction, industry-university-research cooperation, etc., and expanded China's mechanical performance test. The international influence of the field.

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