| 1. | Investigation on lamb waves energy distribution for bond quality testing of rocket motor
火箭发动机胶接质量检测的兰姆波能量分布研究 |
| 2. | Influences of elastic modulus ' change of sheet on the properties of lamb wave propagation
板材弹性模量变化对超声兰姆波传播特性的影响 |
| 3. | This paper introduces two methods of ultrasonic characterization of thin layers : longitudinal pulse - echo and lamb waves
摘要介绍了两种常用的材料薄层超声表征方法纵波脉冲回波法和兰姆波法。 |
| 4. | Finally , damage localization system for composite materials based on lamb wave methods using wavelet analysis is discussed in detail
最后，仔细讨论了基于lamb波主动监测技术的结构损伤定位研究。 |
| 5. | The paper proposed a method that combining the lamb wave with time - frequency domain analysis technology for the damage detection of composite materials
本文将lamb波与hht技术结合起来,用于复合材料结构的损伤识别。 |
| 6. | Secondly , wavelet transform is applied to compute the arrival time of the lamb wave group velocity experiments results demonstrate that wavelet transform can improve the precision of damage localization
其次，本文采用小波分析方法提取lamb波群速度的到达时间，获得了比阈值法及互相关方法更高的精度。 |
| 7. | The research work of this paper are as follows : firstly , the concept of active monitoring technique based on lamb wave in the paper and the propagation fundamentals of lamb wave in structure are discussed
首先，本文探讨了lamb波在结构中的传播特性，研究了实验所选频率范围内适于复合材料损伤监测的最好的中心频率。 |
| 8. | The feasibility of the application of lamb wave to inspect the complex shaped construction of al - alloy thin - plate was discussed , the relative parameters were deduced in the experiments , and the technology was validated in the practices
主要探讨了应用兰姆波检测铝合金薄板异型结构件的可行性，从试验中得出了检测的参数，并通过实践应用加以证实。 |
| 9. | Lamb waves method is mainly used to characterize thin plate materials , without using very high frequency , it can measure the velocity of transverse wave and longitudinal wave , depth of the plate , and the bonding quality between plates
兰姆波法主要用于表征薄板类材料，无需较高检测频率，可以测得板中纵波和横波的声速、板厚和板与板之间的结合特性等，检测精度较高。 |
| 10. | According to fiberglass - reinforced composite material , the propagation modes of lamb wave before and after damage ' s generation is analyzed . ellipse technique is applied to determine damage location . three time delay estimation methods are compared
针对复合材料板，分析了lamb波在结构损伤前后的传播速度；采用了椭圆技术来确定损伤位置；比较了三种不同的时延估计方法的损伤定位效果。 |
