Perspective Measure Resin Matrix Composite Internal Deformation Field And Strain Field Distribution

Composite material is composed of two or more than two kinds of physical and chemical properties are a combination of different material in the physical form of material. There are some advantages in Composite materials, such as light weight, high strength, easy molding, excellent flexibility, chemical resistance, has been widely applied in aerospace, marine, automotive industry, electronic industry and people daily life. The macro physical and mechanical performance measurement of compound material mechanics including the elastic constants, intensity, material anisotropy, strain field and strain measurement parameters, such as. Mechanical properties of the material plays a key role to ensure the safe use of composite materials in the use of composite materials. The paper is based on the research of various measurement technology, and put forward the measurement algorithm of wave number scanning Michelson interferometer based on interference, high accuracy perspective composite deformation field and strain field distribution measurement. The measurement technique is a method for rapid measurement of mechanical properties of materials with high precision.Paper mainly introduced the optical interferometer is commonly used in optical engineering and the principle of interferometer, as provides theory basis for the design of the experimental system. Emphasis on the laser wave number scanning interference measurement system, Michelson interferometer interference principle, mechanical structure design of the measurement system, including system architecture design, selection of experimental equipment, design and production of the loading device and the experimental prototype. From the point of view of theory of Michelson interferometer laser scanning interference is based on the principle of wave number, wave number monitoring principle, deformation field measurement algorithm, compression deformation field and strain field measurement algorithm of measurement principle. It proved its feasibility in the measurement of mechanical properties in composites. Secondly, respectively on the carbon fiber reinforced composite materials out of surface deformation field and the resin matrix enhanced compression deformation field distribution measurement data processing is explained how to extract composite material. Finally, the results of the measured data of various composite materials are given, processing method and experimental data analysis, including:(1)the commercial glass fiber reinforced composite experimental data, including glass fiber reinforced composite device at different loading displacement off surface deformation field and strain field distribution, contour maps are presented a detailed analysis of the experimental data; (2) of carbon fiber reinforced composite materials data, are given in different loading of carbon fiber reinforced composite surface deformation field distribution. The experimental data of defects and defect free samples are analyzed.Judging from the result of the experiment the experimental measuring strain field and strain field of the results coincide with theoretical analysis. Strain field and strain field of deformation under different loading and variable linear change rule. Through the analysis and demonstration of the experimental results, show that the measurement method of laser wave interference is a high precision perspective measurement, full field non-contact measurement method, the experimental measurement system has good stability, easy operation, high signal to noise ratio. The experimental data proved the correctness of the theory. This method has good application prospect in the field of measurement of composite material mechanics properties.