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传统的材料性能鉴定技术大都要破坏材料结构,如化学成分的分析、机械性能的拉伸试验和微观金相结构的测定等。但现今许多先进材料的开发和改进要求采用无损鉴定技术,以尽可能实现在生产过程中的监测和控制。以往的无损检测技术基本用来对制成后或使用中机件结构的宏观缺陷(主要是裂纹)进行检查。在材料生产过程中,特别是在生产初期发挥无损鉴
Most of the traditional material property identification technology to destroy the material structure, such as chemical composition analysis, mechanical properties of the tensile test and micro-metallographic structure determination. However, the development and improvement of many advanced materials today require the use of non-destructive identification techniques to maximize monitoring and control throughout the manufacturing process. Previous non-destructive testing techniques were basically used to examine macroscopic defects (mainly cracks) in the machined structure after use or in use. In the material production process, especially in the early stages of production play a non-destructive test