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- Lamb wave testing Lamb波检测
- The varied dispersion curves worked out this paper is helpful in application of ultrasonic Lamb wave. 文章计算出的多种频散曲线对超声兰姆波的应用是有益的。
- This paper introduced a new Lamb wave sensor based on the analysis of nowaday methods for measuring sound velocity in liquid. 在分析现有液体声速测量方法的基础上,提出了一种新的兰姆波传感器。
- Non-destructive test (NDT) for concrete; inspection, evaluation and appraisal for the quality, flaw, crack and durability of concrete construction; and sound wave test for rock. 咨询专业特长:混凝土无破损检测技术;混凝土质量、缺陷及耐久性检测、评定、鉴定;岩体声波检测。
- Methods 40 cases of ADHD children and 20 subjects of control were studied with event related potentials (ERP) P 3 wave test and attention deficit tester test. 方法本文对40例ADHD和20例正常对照儿童进行了事件相关电位(ERP)P3波的检测,同时用注意力缺陷测试仪进行评分。
- This method and the acquired results provide important theoretical basis for Lamb wave plate inspection and can also be used as the foundation of defect quantification algorithm development. 边界元仿真的结果为使用兰姆波进行弹性平板缺陷检测提供了重要的理论基础,也可以作为缺陷量化的依据。
- A low-frequency multi-mode ultrasonic Lamb wave method suitable for characterizing shear and longitudinal wave velocities, thickness and density of ultra-thin elastic layers is presented. 提出了用低频多模式超声兰姆波定征方法来估计超薄弹性层的纵波声速、横波声速、厚度和密度等参数。
- The recent advances in ultrasonic guided wave testing technique are summarized. 摘要综述近年来超声导波检测研究的最新进展。
- I. A. Viktorov, Rayleigh and Lamb Waves: Physical Theory and Application, Plenum Press, New York (1967). 郑胜文;聚焦式超声波换能器之蓝姆波量测分析与应用;国立成功大学机械工程学系硕士论文(2000).
- 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。
- Abstract: Wedge transducers located on the surfaces of layered planar structures are used to generate and detect the multimode Lamb waves. 文章摘要: 置于层状平面结构表面的斜劈超声换能器被用于激发和接收多模兰姆波。
- For the different solidifying time of the adhesive layer, the measured amplitude-frequency relationships of the multimode Lamb waves are quite different. 对于不同的粘接层固化时间,实验测得的多模兰姆波幅频曲线明显不同。
- Her daughter Nancy is an ewe lamb to her. 她的女儿南希是她的心肝宝贝。
- The wave tests the courage of the coxswain,while difficulties exams human's tolerance. 风浪考验艄公的胆量,困难检验人的坚强。
- 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。
- Creeping wave testing is an effective supplement to conventional ultrasonic testing. 爬波检测是常规超声波检测的有力补充。
- CALCULATION FOR LAMB WAVE DISPERSION CURVES 兰姆波频散曲线的计算
- The authors carry out pertinently several testing methods toward some highway subgrade including nondestructive low-layer panel wave test, bending test, loading plate test, CBR test. 鉴于此,对某高速公路路基针对性地进行了多种测试,其方法包括无损浅层面波测试、弯沉测试、载荷板测试、加州承载比(CBR)测试。
- Laboratory study of Lamb wave computed tomography Lamb波CT成像的实验研究
- Experiment showed that Rayleigh wave testing technique was feasible for the evaluation and it was convenient, quick and efficient. 试验发现瑞利波法评价地基强夯效果是可行的,具有方便、快速和高效的特点。