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OB-A1: Room C / Nondestructive Evaluation and Advanced Signal Processing 2
Time:
Tuesday, 14/Nov/2023:
2:40pm - 4:00pm
Session Chair: Prof. Helena Geirinhas Ramos Session Chair: Prof. Lalita Udpa
Presentations
2:40pm - 3:00pm ID: 139 / OB-A1: 1 Regular_Abstract (short paper) Submission Topics: Nondestructive Evaluation (Electromagnetic and Mechanical methods) and Advanced Signal Processing (NEASP) Keywords: Electromagnetic NDT, Eddy current testing, Pulsed eddy current testing
COMPARISON STUDY OF PULSED EDDY CURRENT TESTING AND EDDY CURRENT TESTING IN THICKNESS MEASUREMENT
Jiuhao GE1, Noritaka YUSA2
1Nanjing University of Aeronautics and Astronautics, China, People's Republic of; 2Tohoku University, Japan
In this paper, the devices of PECT and ECT were set up, and the performance of PECT and ECT was compared in thickness measurement. The experimental results indicated that although the exciting current of PECT was higher than ECT, PECT cannot evaluate 1 mm plate. Using the amplitude of ECT signal, ECT cannot evaluate 10 mm plate. Using the phase of ECT signal, all four plates can be evaluated. Traditional ECT has better performance than PECT in the thickness evaluation of current plates.
3:00pm - 3:20pm ID: 385 / OB-A1: 2 Regular_Abstract (short paper) Submission Topics: Nondestructive Evaluation (Electromagnetic and Mechanical methods) and Advanced Signal Processing (NEASP) Keywords: Nondestructive Testing, Material characterization, Multi band, resonator, planar microwave sensor
ELECTROMAGNETIC MATERIAL CHARACTERIZATION OF POLYMERS USING A DUAL BAND TRANSMISSION FOR DIFFERENTIAL SENSING APPLICATIONS
Obaid ELSHAFIEY, Subrata MUKHERJEE, Yamini KOTRIWAR, Yiming DENG
Michigan State University, United States of America
This paper presents a planar microwave sensor sensitive to complex permittivity changes in polymer materials. Characterization of permittivity changes in polymers is measured and correlated with heat caused degradation. To track minute permittivity changes, a highly sensitive design is developed, and tested with different polymers, The main advantage of the proposed sensor is its design, allowing ease of fabrication, while combining a dual band operation principle, with differential sensing, providing sensitivity to the difference between two materials at multiple frequencies. The proposed differential sensor possesses a high sensitivity of (360MHz) in terms of absolute sensitivity.
3:20pm - 3:40pm ID: 405 / OB-A1: 3 Regular_Abstract (short paper) Submission Topics: Nondestructive Evaluation (Electromagnetic and Mechanical methods) and Advanced Signal Processing (NEASP) Keywords: Magnetic Incremental Permeability, Magnetic Needle Probe, Non-destructive Testing, Surface Hardness
MAGNETIC INCREMENTAL PERMEABILITY USING DIRECT ELECTRICAL CONTACTS FOR A ROBUST AND DIRECTIONAL CHARACTERIZATION OF FERROMAGNETIC STEEL SURFACE TREATMENTS.
Yves Armand TENE DEFFO1, Benjamin DUCHARNE2
1Faculty of Engineering and Technology, University of Buea, Cameroon; 2ELyTMaX IRL3757, CNRS, Univ. Lyon, INSA Lyon, UCBL 1, Tohoku University, Japan
Magnetic incremental permeability (MIP) method is an efficient Non-Destructive Testing (NDT) method for characterizing metallurgical treatments (carburization, shoot-peening). Still, the conventional experimental setup is limited by inherent properties mostly due to the flat coil Eddy Current Testing (ECT) sensor (lift-off, etc.). In this study, direct electrical contacts derived from the magnetic needle probe (MNP) stand in place of the conventional sensor. This alternative “MNP-MIP” method provides directional measurement and solves multiple issues of the current process as applied to material surface treatment inspection.
3:40pm - 4:00pm ID: 361 / OB-A1: 4 Regular_Abstract (short paper) Submission Topics: Nondestructive Evaluation (Electromagnetic and Mechanical methods) and Advanced Signal Processing (NEASP) Keywords: Magnetic testing, Residual stress, Steel
DEVELOPMENT OF ELECTROMAGNETIC MODEL FOR EVALUATION OF RESIDUAL STRESS IN STEELS BY EDDY CURRENT MAGNETIC SIGNATURE METHOD
Kodai TAKIGAMI, Tetsuya UCHIMOTO, Sho TAKEDA
Tohoku University, Japan
The eddy current magnetic signature (EC-MS) method has a high ability to evaluate residual stress in carbon steels with high sensitivity. In this study, an electromagnetic model for the EC-MS method is developed to quantitatively evaluate the amplitude and profile of residual stresses in steels. For this purpose, in-situ measurement of EC-MS signals is carried out during the compression test of carbon steel specimens. The experimental signals are compared with simulated signals based on electromagnetic field analysis considering the constitutive relationship of dynamic magnetization.
