Measuring Lamb wave dispersion curves of a bi-layered plate and its application on material characterization of coating

YC Lee, SW Cheng - IEEE transactions on ultrasonics …, 2001 - ieeexplore.ieee.org
This paper investigates the Lamb wave dispersion curves of a bi-layered plate and
evaluates the feasibility of using the dispersion data to characterize the coating's material …

Measurements of dispersion curves of leaky Lamb waves using a lens-less line-focus transducer

YC Lee - Ultrasonics, 2001 - Elsevier
This paper presents a new method of measuring dispersion curves of leaky Lamb waves
propagating in a thin plate. The measurement system is based on a lens-less line-focus …

4. Quantitative acoustic microscopy

PV Zinin - Experimental Methods in the Physical Sciences, 2001 - Elsevier
This chapter deals with the elastic characterization of solid media by acoustic microscopy.
Three types of microscopy are considered. The first type is conventional acoustic …

Fabrication of broadband poly (vinylidene difluoride-trifluroethylene) line-focus ultrasonic transducers for surface acoustic wave measurements of anisotropy of a (1 0 …

Y Lu, C He, G Song, B Wu, CH Chung, YC Lee - Ultrasonics, 2014 - Elsevier
This paper investigates a new method for fabrication of broadband line-focus ultrasonic
transducers by sol–gel spin-coating the poly (vinylidene difluoride-trifluroethylene)[P (VDF …

[PDF][PDF] 线聚焦无镜头式聚偏氟乙烯超声探头的研制及V (f, z) 分析法在表面波波速测量中的应用

何存富, 吕炎, 宋国荣, 吴斌, 李永春 - 机械工程学报, 2011 - qikan.cmes.org
线聚焦式超声材料性质表征系统可以对水浸试样漏表面波或类漏表面波的相速度进行精确的
测量, 但鉴于传统超声显微镜镜头的材料昂贵且制作困难, 采用厚度为40 m 的聚偏氟乙烯 …

Measuring dispersion curves of acoustic waves using PVDF line-focus transducers

YC Lee, SP Ko - NDT & E International, 2001 - Elsevier
This paper presents a new method for measuring dispersion curves of elastic waves
propagating in thin plates and layered media. The measurement is based on line-focus …

[PDF][PDF] NDT&E International

CJ Li, J Ma - 1997 - researchgate.net
abstract This paper proposes an approach to detecting and characterizing structural cracks
emanating from rows of rivet holes in thin metallic plates using lamb wave, wavelet transform …

Cylindrical Rayleigh surface waves on a layer-coated cylinder measured by PVDF transducer and defocusing measurement method

CI Lin, Y Lu, C He, G Song, YC Lee - NDT & E International, 2015 - Elsevier
This paper develops a measurement method for accurately determining dispersion curves of
Rayleigh-type surface waves propagating on layer-coated elastic cylinders. It utilizes PVDF …

Characterization of materials fabricated by additive manufacturing method using line focused ultrasonic transducer

Q Li, X Zhang, Y Wang… - ASME …, 2016 - asmedigitalcollection.asme.org
In this paper, we present our recent study on the characterization of the elastic properties of
several metal alloys fabricated by additive manufacturing method using the line-focus …

Characterizing Isotropic Materials in Corrosive Environments: A Non-Destructive Testing Approach using an Advanced Line Focus Transducer

SAA AlGhamdi - 2023 - search.proquest.com
Corrosion plays a considerable role in metal degradation. For example, approximately 40%
of the defense system maintenance is directed toward corrosion-related maintenance with …