Results 31 to 40 of about 6,039 (248)
Chinese Journal of Mechanical Engineering, 2023 Pinhole corrosion is difficult to discover through conventional ultrasonic guided waves inspection, particularly for micro-sized pinholes less than 1 mm in diameter.
Jinjie Zhou +5 more
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Rail Diagnostics Based on Ultrasonic Guided Waves: An Overview
Applied Sciences, 2021 Rail tracks undergo massive stresses that can affect their structural integrity and produce rail breakage. The last phenomenon represents a serious concern for railway management authorities, since it may cause derailments and, consequently, losses of ...
Davide Bombarda +2 more
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Applied SciencesThe imaging detection of ultrasonic guided waves in plates using arc sparse arrays is highly significant for weld scattering conditions. A novel approach for detecting welded plate structures using the left rank of ultrasonic guided waves in arc sparse ...
Xinjie Zhu +4 more
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Grease-like coupling agent based on metal ionization method for low-frequency ultrasonic NDT
Results in Physics, 2019 In long-distance NDT based on ultrasonic guided waves with low-frequency excitation, the most commonly used industrial coupling agents are grease-like coupling agents.
Lei Zhang +3 more
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Damage identification and location method for welded pipe using ultrasonic guided wave
You-qi chuyun[Objective] The damage detection technology based on ultrasonic guided waves has broad application prospects in the rapid damage detection of long-distance pipes.
ZHOU Kai +4 more
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Anorectal Dysfunction in Systemic Sclerosis: Clinical Phenotypes and Functional Patterns
Arthritis Care &Research, EarlyView.Objective The aim of this study was to characterize specific physiologic defects in anorectal dysfunction in systemic sclerosis (SSc) using anorectal manometry (ARM), evaluate associations with gastrointestinal (GI) and extraintestinal clinical phenotypes, and explore potential serologic markers for risk stratification.
Timothy Kaniecki +6 more
wiley +1 more source
Weakening Detection of Composite Structure Adhesive Layer Based on Nonlinear Guided Waves
Applied SciencesIn this study, a detection method utilizing nonlinear ultrasonic guided waves is presented to tackle the difficulties in detecting localized damage and weakening in bonded composite structures.
Fanqiang Bu +6 more
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The upcoming revolution in ultrasonic guided waves [PDF]
SPIE Proceedings, 2011 This paper will include discussions on fundamental principles and market forces associated with the upcoming revolution in ultrasonic guided waves. A literature survey is also outlined covering some selected major developments this past decade. A few applications in pipe, rail, bonding and composites, imaging and tomography, ultrasonic vibration, de-
openaire +1 more source
Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals
Advanced Engineering Materials, EarlyView.This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao +2 more
wiley +1 more source
SensorsUltrasonic guided waves, which are often generated and detected by piezoelectric transducers, are well established to monitor engineering structures. Wireless solutions are sought to eliminate cumbersome wire installation. This work proposes a method for
Marilyne Philibert, Kui Yao
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