Microcracks Detection Based on Shuttle-Shaped Electromagnetic Thermography

Li, Xiaofeng; Gao, Bin; Liu, Zewei; Tian, Gui Yun

doi:10.1109/jsen.2020.3001305

Cited by 9 publications

(2 citation statements)

References 36 publications

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“…The electromagnetic thermography excitation system [9] is composed of an inductive heating device, a synchronizer trigger, a working head and an excitation magnet yoke. Especially, according to different application scenarios, the shape of the magnet yoke can be selected as L-Shaped [10] or Shuttle-shaped [11]. Both of them have good performance in natural micro-crack detection applications.…”

Section: ) Configurationmentioning

confidence: 99%

Instrumental Configuration of Electromagnetic Thermography and Optical Thermography

Zhang

et al. 2020

Studies in Applied Electromagnetics and Mechanics

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Electromagnetic thermography and optical thermography are both important non-destructive testing (NDT) methods that have been widely used in the fields of modern aerospace, renewable energy, nuclear industry, etc. The excitation modes are crucial whose performances have a decisive effect on the detection results. Previous studies mainly focused on the physics mechanism, applications, and signal processing algorithms. However, the instrument configuration is rarely presented. This paper is to introduces the recently designed excitation sources of electromagnetic thermography and optical thermography detection systems, respectively. These instruments involved L-shaped and Shuttle-shaped sensor structures for electromagnetic thermography and multi-modes excitation for optical thermography. Besides, the topologies and operating principles are shown in detail. Experimental results are carried out to verify the practicability and reliability of the proposed systems.

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Section: ) Configurationmentioning

confidence: 99%

Instrumental Configuration of Electromagnetic Thermography and Optical Thermography

Zhang

et al. 2020

Studies in Applied Electromagnetics and Mechanics

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“…Through numerical simulations and experiments, they focused on the design and optimization of the PEC probe, ultimately leading to an improvement in the probe's sensitivity. In a related effort, Li et al 24 introduced an PEC thermography system with an innovative shuttle‐shaped induction structure. This design boosted the detection capabilities for complex surface microcracks in both ferromagnetic and non‐ferromagnetic materials by employing a shuttle‐shaped wide‐open ferrite core and coil windings.…”

Section: Introductionmentioning

confidence: 99%

A new probe‐based electromagnetic non‐destructive testing method for carbon fiber‐reinforced polymers utilizing eddy current loss measurements

Yang

Feng

2023

Polymer Composites

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Eddy current testing (ECT) is a widely used technique for detecting defects in carbon fiber‐reinforced polymers (CFRPs) at high frequencies. However, designing high‐frequency systems can be challenging, and high noise levels can be problematic. To address these issues, non‐destructive testing (NDT) methods that can detect CFRP defects at lower frequencies must be explored. In this study, a novel NDT method for detecting defects in CFRP at low frequencies was proposed. This method is an alternative to pulsed eddy current thermography and can achieve similar detection and imaging results at low frequencies. Furthermore, the developed method has a simpler structure and is easier to implement. This method uses the eddy current loss to characterize the thermal power of the eddy current in CFRP. A new probe was used to detect the eddy current loss to inspect the CFRP. The effectiveness of the proposed method was experimentally verified using different types of CFRP samples based on the C‐scan technology. The scanned images demonstrate that the developed method can provide appropriate detection results up to a frequency of 750 kHz. Furthermore, rotation experiments were performed to detect the fiber direction; the proposed method successfully detected the fiber direction up to 750 kHz. Thus, the proposed method can improve the detection of defects and enhance the longevity of CFRP components. Future work will focus on enhancing the sensitivity of this method at even lower frequencies.

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Electromagnetic Multiphysics Sensing Nondestructive Testing

Gao

et al. 2023

Encyclopedia of Sensors and Biosensors

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Microcracks Detection Based on Shuttle-Shaped Electromagnetic Thermography

Cited by 9 publications

References 36 publications

Instrumental Configuration of Electromagnetic Thermography and Optical Thermography

Instrumental Configuration of Electromagnetic Thermography and Optical Thermography

A new probe‐based electromagnetic non‐destructive testing method for carbon fiber‐reinforced polymers utilizing eddy current loss measurements

Electromagnetic Multiphysics Sensing Nondestructive Testing

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