Design and Verifying Linear Electromagnetic Induction Device for Monitoring Structural Vibration Fatigue

Seungkyung Kye; Ho Yeon Jung

doi:10.22725/JSRP.2024.2.1.10

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2024 Vol.2, Issue 1 Preview Page Next Page

Research Article

Design and Verifying Linear Electromagnetic Induction Device for Monitoring Structural Vibration Fatigue 구조물 진동 피로 모니터링을 위한 선형 전자기 유도 장치의 설계 및 검증

30 June 2024. pp. 10-18

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Abstract

In this study, the design and testing of an electromagnetic induction device were carried out to monitor the vibration fatigue of structures. The electromagnetic induction device is based on Faraday's law of electromagnetic induction and consists of coils and permanent magnets. The device was designed through numerical analysis using Ansys Electromagnetics and Maxwell 2D Transient Analysis. Vibration table tests showed that the acceleration data inferred from the induced voltage of the electromagnetic induction device had an error of about 10% compared to the actual acceleration data, but overall exhibited a similar trend. This indicates that the electromagnetic induction device demonstrates a linear response to the excitation force. The main source of error is presumed to be the uncertainty in the design constants of the electromagnetic induction device, with discrepancies in variables such as coil turns and magnetic field strength during the actual manufacturing process.

Keywords

electromagnetic induction device

structural acceleration monitoring

vibration fatigue

본 연구에서는 구조물의 진동 피로를 모니터링하기 위해 전자기 유도 장치에 대한 설계와 시험을 수행하였다. 전자기 유도 장치는 패러데이의 전자기 유도 법칙을 기반으로 하여 코일과 영구자석으로 구성된다. Ansys Electromagnetics와 Maxwell 2D Transient Analysis를 통해 장치에 대한 설계를 수행하였다. 진동대를 이용한 가진 시험 결과, 전자기 유도 장치의 유도 전압을 통해 유추한 가속도 데이터와 실제 가속도 데이터 간에 약 10%의 오차가 발생하였으나, 전반적으로 유사한 경향을 보였다. 이는 전자기 유도 장치가 가진력에 대해 선형적인 응답을 나타냄을 의미한다. 주요 오차 원인은 전자기 유도 장치의 설계 상수에 대한 불확실성으로 추정되었으며, 코일 턴수와 자기장 세기 등의 변수 설정에서 실제 제작 과정과의 차이가 존재하였다.

키워드

전자기 유도 장치

구조물 가속도 모니터링

진동 피로

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Information

Publisher :Korean Institute of Bridge and Structural Engineers
Publisher(Ko) :한국교량및구조공학회
Journal Title :Journal of Structure Research and Practice
Journal Title(Ko) :한국교량및구조공학회 논문집
Volume : 2
No :1
Pages :10-18
Received Date : 2024-05-28
Revised Date : 2024-06-08
Accepted Date : 2024-06-10
DOI :https://doi.org/10.22725/JSRP.2024.2.1.10

Journal of Structure Research and Practice ISSN:3022-4241(Print) 3022-7267(Online) 한국교량및구조공학회 논문집

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