提出用低频超声类兰姆波定征方法来估计超薄双层胶结复合结构各层的纵波声速、横波声速、厚度和密度等参数。
A low frequency ultrasonic (Lamb like) wave method is used for characterizing the shear, longitudinal wave velocities, the thickness, and the density of ultra thin two layered bonding composite.
提出用低频超声类兰姆波定征方法来估计超薄黏结复合结构各层与黏结层的厚度、密度、纵波声速和横波声速等参数。
A low frequency ultrasonic Lamb like wave method suitable for characterizing the thickness, density, shear and longitudinal wave velocities of the ultra thin bonding composite is presented.
研究领域：高精度数值模拟方法及其误差估计理论、碳/碳复合材料力学行为研究、编织复合材料力学行为研究等。
The research fields have high precise numerical simulated method and its error estimate theory, the mechanical behavior of carbon/carbon composites, the mechanical behavior of braided composites, etc.
在圆管与圆管的爆炸复合研究中，需要对管的动态参数做定量的估计。
In the research of explosive welding between tubes, it is necessary to evaluate quantitatively the parameters of the moving tube.
LDP消费量的平稳增长预计会在世界范围内持续——估计从2009年到2012年年均复合增长率会达到2.4%。
Steady growth in LDP consumption is expected to continue worldwide — rising by an estimated 2.4% compound annual growth rate (CAGR) from 2009 to 2012.
在圆管与圆管的爆炸复合研究中，需要对管的动态参数做定量的估计。
For the research of explosive welding between tubes, it is necessary to evaluate quantitatively the parameters of the moving tube.
论述了最大熵谱估计的原理、方法及其在复合材料粘接质量超声检测中的应用。
Based on modern spectral estimation, the principle of maximum entropy estimation is discussed.
论述了最大熵谱估计的原理、方法及其在复合材料粘接质量超声检测中的应用。
Based on modern spectral estimation, the principle of maximum entropy estimation is discussed.
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