【摘要】：對于材料微結構特征的檢測,特別是材料早期損傷,非線性超聲具有獨特的優(yōu)勢。立足于非線性超聲的發(fā)展歷程,闡述了非線性超聲的基本理論和數(shù)學模型,深入分析了非線性超聲參量的影響因素,包括位錯單極子模型、位錯偶極子模型、析出物和微裂紋;闡述了非線性超聲的實驗方法,重點介紹了非線性超聲縱波和表面波的檢測方法;論述了非線性超聲在閉合裂紋、疲勞及位錯早期損傷、材料熱老化、蠕變及材料輻射損傷等領域中的應用;最后總結了非線性超聲檢測技術在材料早期損傷應用中面臨的機遇和挑戰(zhàn)。
[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.
【作者單位】： 裝甲兵工程學院裝備再制造技術國防科技重點實驗室;中國人民解放軍海軍92601部隊;上海大學材料科學與工程學院;東北大學材料科學與工程學院;
【基金】：國家重點研發(fā)計劃重點專項(2016YFB1100205) 北京市科技專項(Z161100004916009) 北京市科技計劃(Z161100001516007)項目資助
【分類號】：TB302.5
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本文編號：2488671