Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
An electromagnetic acoustic transducer with electromagnetic pulse restraining
View through CrossRef
Electromagnetic acoustic transducers (EMATs) are widely used in non-destructive testing (NDT). However, when ultrasonic waves are excited, the transmitting coil generates a strong alternating magnetic field, resulting in the generation of an electromagnetic pulse. To address this problem,
an EMAT with electromagnetic pulse restraining is presented in this paper. First, the cause of the electromagnetic pulse is investigated. Second, the conditions for restraining the electromagnetic pulse using the new transmitting coil are analysed. Finally, the design method for the new transmitting
coil is provided through evaluation of the magnetic field model of the new transmitting coil. The experimental results demonstrate that the new transmitting coil has a significant effect on the excitation of ultrasonic waves in the tested material and the restraining of electromagnetic pulses.
Therefore, the method proposed in this study can self-compensate for the strong alternating magnetic field generated by the transmitting coil, reduce the interference of the electromagnetic pulse with the ultrasonic wave and improve the signal-to-noise ratio (SNR) of EMATs.
British Institute of Non-Destructive Testing (BINDT)
Title: An electromagnetic acoustic transducer with electromagnetic pulse restraining
Description:
Electromagnetic acoustic transducers (EMATs) are widely used in non-destructive testing (NDT).
However, when ultrasonic waves are excited, the transmitting coil generates a strong alternating magnetic field, resulting in the generation of an electromagnetic pulse.
To address this problem,
an EMAT with electromagnetic pulse restraining is presented in this paper.
First, the cause of the electromagnetic pulse is investigated.
Second, the conditions for restraining the electromagnetic pulse using the new transmitting coil are analysed.
Finally, the design method for the new transmitting
coil is provided through evaluation of the magnetic field model of the new transmitting coil.
The experimental results demonstrate that the new transmitting coil has a significant effect on the excitation of ultrasonic waves in the tested material and the restraining of electromagnetic pulses.
Therefore, the method proposed in this study can self-compensate for the strong alternating magnetic field generated by the transmitting coil, reduce the interference of the electromagnetic pulse with the ultrasonic wave and improve the signal-to-noise ratio (SNR) of EMATs.
Related Results
Design of Flangeway Gap for Restraining Rail
Design of Flangeway Gap for Restraining Rail
The aim of the paper is to classify restraining rail, discuss the advantages and disadvantages of each type of restraining rail, derive the formula to determine the flangeway gap, ...
Research on acoustic control of coupled vibration system of transducers using acoustic surface and topological defect structures
Research on acoustic control of coupled vibration system of transducers using acoustic surface and topological defect structures
<sec>How to regulate the sound waves in the coupled vibration system of complex power ultrasonic transducers and design high-performance transducer systems has always been an...
Optimization of the method for determining the velocity of surface acoustic waves
Optimization of the method for determining the velocity of surface acoustic waves
The methodological aspects of measuring the velocity of Rayleigh surface waves are considered. The main attention is paid to the method for determining the change in surface wave v...
Mechanism and numerical simulation of electromagnetic acoustic emission based on short-time pulse and large current
Mechanism and numerical simulation of electromagnetic acoustic emission based on short-time pulse and large current
Abstract
To address the issue of traditional acoustic emission detection of tank bottom plate defects, which requires external force induction and exhibits low detec...
Data Mining of Tongue and Pulse based on Tongue Diagnosis and Pulse Diagnosis Instruments：Evaluation of Machine-Learning Assisting Classification of Fatigue Subjects (Preprint)
Data Mining of Tongue and Pulse based on Tongue Diagnosis and Pulse Diagnosis Instruments：Evaluation of Machine-Learning Assisting Classification of Fatigue Subjects (Preprint)
BACKGROUND
Fatigue is one of the most common subjective symptom,due to lack of objective diagnostic criteria ,it is often neglected,especially in the early ...
Design and finite element simulation of an ultrasonic transducer of two piezoelectric discs
Design and finite element simulation of an ultrasonic transducer of two piezoelectric discs
With the developing of ultrasound technology and expending of it’s application scope, new requirements for the structure and the energy radiation of the transducer are presented. A...
Acoustic cloaking design based on penetration manipulation with combination acoustic metamaterials
Acoustic cloaking design based on penetration manipulation with combination acoustic metamaterials
The acoustic wave transmission manipulation ability is the most important performance for the acoustic metamaterials. To manipulate the acoustic transmission, the combination acous...
Effects of Acoustic and Fluid Dynamic Interactions in Resonators
Effects of Acoustic and Fluid Dynamic Interactions in Resonators
Thermoacoustic refrigeration systems have gained increased importance in cryogenic cooling technologies and improvements are needed to increase the efficiency and effectiveness of ...