Development of Electromagnetic Acoustic Transducer System for Coin Classification [PDF]
Sensors, 2022 In this work, a method for identifying counterfeit coins based on an electromagnetic acoustic transducer (EMAT) to detect the difference in the coin’s natural acoustic frequency response is presented.
Duy-Vinh Dao +4 more
doaj +4 more sources
Excitation of Mechanical Resonances in the Stationary Ring of a Mechanical Seal by a Continuously Operated Electromagnetic Acoustic Transducer [PDF]
Sensors, 2023 Acoustic/ultrasonic testing is now a common method in the field of nondestructive testing for detecting material defects or monitoring ongoing mechanical changes in a structure during operation. In many applications, piezoelectric transducers are used to
Alexander Siegl +3 more
doaj +2 more sources
Extending the Incidence Angle of Shear Vertical Wave Electromagnetic Acoustic Transducer with Horizontal Magnetization [PDF]
Sensors, 2022 Angled shear vertical (SV) waves have been successfully employed in the non-destructive testing of welds, pipes, and railways. Non-contact meander-line coil electromagnetic acoustic transducers (EMAT) have many benefits in generating angled SV waves. The
Zhengyang Qu +4 more
doaj +2 more sources
Antisymmetric Lamb Wave Simulation Study Based on Electromagnetic Acoustic Transducer with Periodic Permanent Magnets [PDF]
Sensors, 2023 Due to its multi-mode and dispersion characteristics, Lamb waves cause interference to signal processing, which profoundly limits their application in nondestructive testing.
Lianren Du, Ruizhen Gao, Xiaojuan Jia
doaj +2 more sources
High Temperature Shear Horizontal Electromagnetic Acoustic Transducer for Guided Wave Inspection [PDF]
Sensors, 2016 Guided Wave Testing (GWT) using novel Electromagnetic Acoustic Transducers (EMATs) is proposed for the inspection of large structures operating at high temperatures.
Maria Kogia +7 more
doaj +2 more sources
An Electromagnetic Low-Frequency Flextensional Transducer for Acoustic Logging [PDF]
SensorsLow-frequency acoustic logging transducers are pivotal to far-acoustic imaging logging technology and permeability logging technology. This study presents a monopole acoustic transducer driven by electromagnetic force, exploiting the low-frequency ...
Baiyong Men +5 more
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A New Method to Evaluate Surface Defects with an Electromagnetic Acoustic Transducer [PDF]
Sensors, 2015 Characterizing a surface defect is very crucial in non-destructive testing (NDT). We employ an electromagnetic acoustic transducer (EMAT) to detect the surface defect of a nonmagnetic material.
Kang Zhang +4 more
doaj +2 more sources
Design of a Novel Electromagnetic Ultrasonic Transducer for Stress Detection [PDF]
SensorsAccurate stress evaluation of structural components during manufacturing and operation is essential for ensuring the safety and reliability of advanced equipment in aerospace, defense, and other high-performance fields.
Changhong Chen +4 more
doaj +2 more sources
A Capsule-Type Electromagnetic Acoustic Transducer for Fast Screening of External Corrosion in Nonmagnetic Pipes [PDF]
Sensors, 2018 For fuel transmission and structural strengthening, small-diameter pipes of nonmagnetic materials are extensively adopted in engineering fields including aerospace, energy, transportation, etc.
Yong Li +5 more
doaj +2 more sources
Optimization and Application of Electromagnetic Ultrasonic Transducer for Battery Non-Destructive Testing [PDF]
SensorsThe monitoring of safety and health in lithium-ion batteries (LIBs) presents a significant challenge. Ultrasonic detection techniques fulfil the requirements for high sensitivity and non-destructive evaluation in the safety assessment of these batteries.
Xuhang Zhan +4 more
doaj +2 more sources