The inductance of various coil types used in eddy current testing: A theoretical, experimental, and numerical analysis

Year 2025, Volume: 14 Issue: 2, 1 - 1

Memduh Suveren , Emir Esim , Tuğba Baktır , Serhat Karaca , Furkan Korkmaz , Omer Enes Yildiz

Abstract

In the transmission of electrical energy, Aluminum Coated Steel (ACS) wires are frequently used. During the manufacturing of these wires, eddy current testing systems, which are one of the non-destructive testing methods, are used to detect deformations that occur on their surfaces. The sensors included in this test system reference inductance changes to detect defects on the material surface. In determining the inductance values in sensors, analytical, numerical, and experimental methods are preferred. In this study, the COMSOL Multiphysics program was used by employing the Harold A. Wheeler method for analytical calculations and the finite element method for numerical calculations. For reference, the inductance values of 26 coils produced with the same parameters were experimentally measured, and the accuracy of the inductance values calculated by the other two methods was compared to determine which method is more reliable for calculating coil inductance. According to the reference LCR meter measurements for the Harold A. Wheeler method, the deviation value ranges from 0.02% to 6.32%, while the deviation value for the developed COMSOL Multiphysics method is calculated to be in the range of 0.18% to 4.83%. It has been shown that this proposed method will be more effective in industrial applications.

Keywords

Eddy current sensor, Coil inductance, COMSOL Multiphysics, Harold A. Wheeler method

Project Number

5220140 nolu 1505 Sanayi Üniversite İşbirliği Projesi

Girdap akım testinde kullanılan farklı tip bobinlerin endüktansının teorik, deneysel ve sayısal incelenmesi

Abstract

Elektrik enerjisinin iletiminde Alüminyum Kaplı Çelik (ACS) teller sıklıkla kullanılmaktadır. Bu tellerin imalatı esnasında yüzeylerinde meydana gelen deformasyonları tespit etmek için tahribatsız muayene yöntemlerinden biri olan girdap akım test sistemleri kullanılmaktadır. Bu test sisteminde yer alan sensörler, malzeme yüzeyindeki kusurların tespitinde indüktans değişimlerini referans almaktadır. Sensörlerdeki indüktans değerlerinin belirlenmesinde analitik, numerik ve deneysel yöntemler tercih edilmektedir. Bu çalışmada analitik hesaplama için Harold A. Wheeler yöntemi ve numerik hesaplama için sonlu elemanlar metodundan faydalanarak COMSOL Multiphysics programı kullanılmıştır. Referans olması için aynı parametrelerle üretilen 26 adet bobinin indüktans değerleri deneysel olarak ölçülmüş ve diğer iki yöntemle hesaplanan indüktans değerlerinin doğruluğu karşılaştırılarak bobin indüktansının hesaplanmasında hangi yöntemin daha güvenilir olduğu belirlenmiştir. Harold A. Wheeler yönteminin referans olarak kullanılan LCR metre ölçümlerine göre sapma değeri %0.02 ile %6.32 aralığında, geliştirilen COMSOL Multiphysics yöntemindeki sapma değeri ise %0.18 ile %4.83 aralığında hesaplanmıştır. Önerilen bu yöntemin endüstriyel uygulamalarda daha etkin olacağı ortaya konulmuştur.

Keywords

Eddy akım sensörü, Bobin indüktansı, COMSOL Multiphysics, Harold A. Wheeler yöntemi

Supporting Institution

TUBİTAK

Project Number

5220140 nolu 1505 Sanayi Üniversite İşbirliği Projesi

Thanks

Bu çalışma TUBİTAK 1505 Üniversite Sanayi iş birliği projesi kapsamında 5220140 kodu ile desteklenmektedir. Ayrıca çalışmamız Hasçelik Kablo San. Tic. A. Ş. Ar-Ge Merkezi bünyesinde gerçekleştirilmiştir. Katkılarından dolayı firmaya ve TÜBİTAK’a teşekkür ederiz.

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