Results 31 to 40 of about 1,309 (186)

Air-Coupled Excitation of a Slow A0 Mode Wave in Thin Plastic Films by an Ultrasonic PMN-32%PT Array

Sensors, 2018
Ultrasonic non-destructive testing techniques (NDT) based on the application of guided waves are already used for inspection of plate-type structures made of various materials, including composite materials.
Rymantas J. Kazys, Liudas Mazeika, Reimondas Sliteris, Justina Sestoke   +3 more
doaj   +1 more source

Research on Fatigue Damage in High-Strength Steel (FV520B) Using Nonlinear Ultrasonic Testing

Shock and Vibration, 2020
In view of the early fatigue damage of high-strength steel FV520B, a nonlinear ultrasonic detection was performed on two types of fatigue samples using nonlinear Lamb waves.
Bingbing Chen, Chao Wang, Pengfei Wang, Sanlong Zheng, Weiming Sun   +4 more
doaj   +1 more source

Peri-Elastodynamic Simulations of Guided Ultrasonic Waves in Plate-Like Structure with Surface Mounted PZT

Sensors, 2018
Peridynamic based elastodynamic computation tool named Peri-elastodynamics is proposed herein to simulate the three-dimensional (3D) Lamb wave modes in materials for the first time.
Subir Patra, Hossain Ahmed, Sourav Banerjee   +2 more
doaj   +1 more source

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

Advanced Materials, Volume 38, Issue 43, 3 August 2026.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang, Byeongseok Ryu, Sujeong Ahn, Junhyub Kim, Myeonghun Jang, Jeong Ho Cho, Won‐Gun Koh, Hyungsuk Lee   +7 more
wiley   +1 more source

Ultrasonic Rainbow: A Meta‐Transducer for Frequency‐Selective Elastic Wave Control via Dithering‐Based Wavenumber Tuning

Advanced Intelligent Systems, Volume 8, Issue 8, August 2026.
A piezoelectric meta‐transducer generates an ultrasonic rainbow, steering guided elastic waves to different angles according to frequency. A dithering‐based binary electrode design enables a closer realization of the target wavenumber filter, improving directional purity and suppressing unwanted lobes. Numerical and experimental validation demonstrates
Masoud Mohammadgholiha, Jochen Moll, Kilian Tschöke, Carsten Kruska, Sylvia E. Gebhardt, Luca De Marchi   +5 more
wiley   +1 more source

Damage localization method using ultrasonic lamb waves and Wav2Vec2.0 neural network

Frontiers in Materials, 2023
In this paper, a Wav2Vec2.0 neural network based on an attention mechanism is proposed to locate defects in array ultrasonic testing signals. This method does not require knowledge of the a priori condition of the sample sound velocity or the feature ...
Lubin Qian, Sihao Liu, Guopeng Fan, Xinlong Liu, Hui Zhang, Yaohua Mei, Yuhui Xing, Zhiqiang Wang   +7 more
doaj   +1 more source

Postbiotics in Food Systems: Components, Production Methods, Food Applications, Functional Properties, and Technological Challenges

Food Science &Nutrition, Volume 14, Issue 8, August 2026.
This review provides a comprehensive, engineering‐oriented synthesis of postbiotics as next‐generation functional food ingredients. It first outlines the principal production routes for postbiotic generation, encompassing thermal technologies, non‐thermal technologies, and extraction/purification methods, and subsequently examines the analytical and ...
Tansu Taspinar, Nuray Güzeler
wiley   +1 more source

Measurements of dispersion of ultrasonic wave velocity in thin layers by the ultrasonic spectroscopy

Archives of Acoustics, 2014
This paper presents the results of measurements of the phase velocity dispersion of ultrasonic waves in thin aluminium sheets. The interaction between ultrasonic waves and a thin solid layer is analysed and the theoretical relations for the transmission ...
W. WOJDOWSKI
doaj  

Wireless Energy Supply to Aircraft Structural Health Monitoring Nodes Using Ultrasonic Lamb Waves

Fatigue of Aircraft Structures, 2014
This article is based on research done during the author’s PhD at Cardiff University, UK. A prototype of a novel wireless energy transmission system aimed at the use with wireless aircraft structural health monitoring (SHM) sensor nodes is described. The
Kural Aleksander
doaj   +1 more source

Methodologies for Dataset Analysis in Regard to Obtaining Material Characteristics Using Lamb Waves

Macromolecular Symposia, Volume 415, Issue 4, August 2026.
ABSTRACT Nondestructive testing has been a fundamental technique in material characterization for an extended period, offering the distinct advantage of preserving the integrity of the tested specimen. Among the conventional methodologies, the pulse‐echo technique has been widely employed for the determination of the Young's modulus and Poisson's ratio
Andreea‐Denisa Griguța, Mihai Valentin Predoi, Cristian Cătălin Petre, Cristian Rugină   +3 more
wiley   +1 more source