材料早期损伤的非线性超声诊断
发布时间：2019-05-30 08:08
【摘要】：对于材料微结构特征的检测,特别是材料早期损伤,非线性超声具有独特的优势。立足于非线性超声的发展历程,阐述了非线性超声的基本理论和数学模型,深入分析了非线性超声参量的影响因素,包括位错单极子模型、位错偶极子模型、析出物和微裂纹;阐述了非线性超声的实验方法,重点介绍了非线性超声纵波和表面波的检测方法;论述了非线性超声在闭合裂纹、疲劳及位错早期损伤、材料热老化、蠕变及材料辐射损伤等领域中的应用;最后总结了非线性超声检测技术在材料早期损伤应用中面临的机遇和挑战。
[Abstract]:Nonlinear ultrasound has unique advantages for the detection of microstructure characteristics of materials, especially for the early damage of materials. Based on the development of nonlinear ultrasound, the basic theory and mathematical model of nonlinear ultrasound are expounded, and the influencing factors of nonlinear ultrasonic parameters, including dislocation monopole model, dislocation dipole model, precipitates and microcracks, are deeply analyzed. The experimental method of nonlinear ultrasound is described, and the detection methods of nonlinear ultrasonic longitudinal wave and surface wave are introduced in detail. The applications of nonlinear ultrasound in closed cracks, fatigue and early dislocation damage, thermal aging, creep and radiation damage of materials are discussed. Finally, the opportunities and challenges of nonlinear ultrasonic testing technology in the application of early damage of materials are summarized.
【作者单位】： 装甲兵工程学院装备再制造技术国防科技重点实验室;中国人民解放军海军92601部队;上海大学材料科学与工程学院;东北大学材料科学与工程学院;
【基金】：国家重点研发计划重点专项(2016YFB1100205) 北京市科技专项(Z161100004916009) 北京市科技计划(Z161100001516007)项目资助
【分类号】：TB302.5
，
本文编号：2488671
[Abstract]:Nonlinear ultrasound has unique advantages for the detection of microstructure characteristics of materials, especially for the early damage of materials. Based on the development of nonlinear ultrasound, the basic theory and mathematical model of nonlinear ultrasound are expounded, and the influencing factors of nonlinear ultrasonic parameters, including dislocation monopole model, dislocation dipole model, precipitates and microcracks, are deeply analyzed. The experimental method of nonlinear ultrasound is described, and the detection methods of nonlinear ultrasonic longitudinal wave and surface wave are introduced in detail. The applications of nonlinear ultrasound in closed cracks, fatigue and early dislocation damage, thermal aging, creep and radiation damage of materials are discussed. Finally, the opportunities and challenges of nonlinear ultrasonic testing technology in the application of early damage of materials are summarized.
【作者单位】： 装甲兵工程学院装备再制造技术国防科技重点实验室;中国人民解放军海军92601部队;上海大学材料科学与工程学院;东北大学材料科学与工程学院;
【基金】：国家重点研发计划重点专项(2016YFB1100205) 北京市科技专项(Z161100004916009) 北京市科技计划(Z161100001516007)项目资助
【分类号】：TB302.5
，
本文编号：2488671
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