Results 21 to 30 of about 11,411 (229)

Characterization of the bond quality of adhesive plates utilizing zero-group-velocity Lamb waves measured by a laser ultrasonics technique

Mechanical Engineering Journal, 2014
The bonding quality of an adhesive component was estimated using the frequency of zero-group-velocity (ZGV) Lamb waves, which can be generated and detected with a laser ultrasonic technique.
Hideo CHO, Yudai YAGUCHI, Hiroaki ITO
doaj   +1 more source

Characterization of Ultrasound Energy Diffusion Due to Small-Size Damage on an Aluminum Plate Using Piezoceramic Transducers

Sensors, 2017
During the propagation of ultrasonic waves in structures, there is usually energy loss due to ultrasound energy diffusion and dissipation. The aim of this research is to characterize the ultrasound energy diffusion that occurs due to small-size damage on
Guangtao Lu, Qian Feng, Yourong Li, Hao Wang, Gangbing Song   +4 more
doaj   +1 more source

Nonlinear Guided Wave Tomography for Detection and Evaluation of Early-Life Material Degradation in Plates

Sensors, 2021
In this paper, the possibility of using nonlinear ultrasonic guided waves for early-life material degradation in metal plates is investigated through both computational modeling and study.
Chengwei Zhao, Sunia Tanweer, Jian Li, Min Lin, Xiang Zhang, Yang Liu   +5 more
doaj   +1 more source

Modeling Magnetostrictive Transducers for Structural Health Monitoring: Ultrasonic Guided Wave Generation and Reception

Sensors, 2021
Ultrasonic guided waves provide unique capabilities for the structural health monitoring of plate-like structures. They can detect and locate various types of material degradation through the interaction of shear-horizontal (SH) waves and Lamb waves with
Gaofeng Sha, Cliff J. Lissenden
doaj   +1 more source

Low attenuation frequency bands for Lamb waves immersed in viscous fluids: theoretical analysis and experimental validation. [PDF]

, 2013
6 páginas, 3 figuras. Proceedings of the 2013 International Congress on Ultrasonics (ICU 2013). 2-5 may 2013, SingaporeThe application of Lamb waves is a promising technique i n ultrasonic NDE techniques for inspection and fluid ...
Elvira Segura, Luis, Granja, Silvio C. G., Higuti, Ricardo Tokio, Kitano, C., Martínez-Graullera, Óscar, Takiy, A. E.   +5 more
core   +1 more source

Non-Contact Ultrasonic Inspection of Impact Damage in Composite Laminates by Visualization of Lamb wave Propagation

Applied Sciences, 2018
This study demonstrates a rapid non-contact ultrasonic inspection technique by visualization of Lamb wave propagation for detecting impact damage in carbon fiber reinforced polymer (CFRP) laminates. We have developed an optimized laser ultrasonic imaging
Nobuyuki Toyama, Jiaxing Ye, Wataru Kokuyama, Shigeki Yashiro   +3 more
doaj   +1 more source

Air-Coupled Ultrasound Sealing Integrity Inspection Using Leaky Lamb Waves in a Simplified Model of a Lithium-Ion Pouch Battery: Feasibility Study

Sensors, 2022
Inspecting the sealing integrity of lead tabs is an important means of ensuring the reliability and safety of pouch-type lithium-ion (Li-ion) batteries with a thin multi-layered aluminum (Al) laminated film.
Hyunwoo Cho, Eunwoo Kil, Jihun Jang, Jinbum Kang, Ilseob Song, Yangmo Yoo   +5 more
doaj   +1 more source

The application of ultrasonic NDT techniques in tribology [PDF]

, 2005
The use of ultrasonic reflection is emerging as a technique for studying tribological contacts. Ultrasonic waves can be transmitted non-destructively through machine components and their behaviour at an interface describes the characteristics of that ...
Anderson W., Arakawa T., Buck O., Dwyer-Joyce R. S., Hodgson K., Kräutkramer J., Masuko M., Mott G., Nagy P. B., Povey M. J. W., R. S. Dwyer-Joyce, Tsao M. C, Wooldridge A. B.   +12 more
core   +1 more source

Study of Lamb Waves for Non-Destructive Testing Behind Screens

EPJ Web of Conferences, 2018
The inspection and control of sodium-cooled fast reactors (SFR) is a major issue for the nuclear industry. Ultrasonic solutions are under study because of the opacity of liquid sodium.
Kauffmann P., Ploix M.-A., Chaix J.-F., Gueudré C., Corneloup G., Baqué F.   +5 more
doaj   +1 more source

A Novel Baseline-Free Method for Damage Localization Using Guided Waves Based on Hyperbola Imaging Algorithm

Sensors, 2023
Most imaging methods based on ultrasonic Lamb waves in structural health monitoring requires reference signals, recorded in the intact state. This paper focuses on a novel baseline-free method for damage localization using Lamb waves based on a ...
Jichao Xu, Wujun Zhu, Xunlin Qiu, Yanxun Xiang   +3 more
doaj   +1 more source