Weldment Nondestructive Testing Using Magneto-optical Imaging Induced by Alternating Magnetic Field

Gao, Xiangdong; Lan, Chongzhou; You, Deyong; Li, Guohua; Zhang, Nanfeng

doi:10.1007/s10921-017-0434-4

Cited by 20 publications

(3 citation statements)

References 19 publications

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“…This procedure is a non-destructive testing based on magneto-optical (MO) imaging, which transforms the magnetic leakage field into a light intensity map to visualize defects [77][78][79]. In the study [80], a vertical combined magnetic field (VCNF) and a parallel combined magnetic field (PCMF) were compared to traditional magnetic fields where it was found that magneto-optical imaging under VCMF could detect weld defects of any shape and distribution accurately.…”

Section: Magneto-optical Detection Methodsmentioning

confidence: 99%

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Quality Assessment of Laser Welding Dual Phase Steels

Marques

Péreira

Silva

2022

Metals

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Since non-conforming parts create waste for industry, generating undesirable costs, it is necessary to set up quality plans that not only guarantee product conformity but also cut the root causes of welding defects by developing the concept of quality at origin. Due to their increasing use in automotive industry, dual phase (DP) steels have been the chosen material for this study. A quality plan for welding DP steel components by laser was developed. This plan is divided into three parts: pre-welding, during and post-welding. A quality assessment regarding mechanical properties, such as hardness, microstructure and tensile strength, was also performed. It was revealed that DP steel does not present considerable weldability problems, except for the usual softening of the heat affected zone (HAZ) and the growth of martensite in the fusion zone (FZ), and the best analysis techniques to avoid failures in these steels are finite element method (FEM), visual techniques during welding procedure and digital image correlation (DIC) for post-weld analysis.

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Section: Magneto-optical Detection Methodsmentioning

confidence: 99%

“…Heat input too low (excessive welding speed or insufficient power) may cause lack of penetration and pores FZ in the welded joint [79,103].…”

mentioning

confidence: 99%

Quality Assessment of Laser Welding Dual Phase Steels

Marques

Péreira

Silva

2022

Metals

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“…Therefore, this study suggests a new nondestructive inspection method based on the Faraday magneto-optical effect: the magneto-optical imaging detection method for the recovery identification of damaged characters [5] . This method aims to increase the resolution, effectiveness, and nondestructiveness of the recovery technique.…”

Section: Introductionmentioning

confidence: 99%

Research on the Recovery Technology of Damaged Characters Based on the Magneto-optical Method

Wang,

Shen,

Chen

2023

J. Phys.: Conf. Ser.

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This work intends to address the issue of surface damage to significant characters on ferromagnetic materials for the assessment of physical evidence. For the identification of altered metallic characteristics, a nondestructive magneto-optical imaging recovery approach based on the magneto-optical effect is presented. The results of the experiments demonstrate that the technique may successfully repair the damaged metallic features. It can be used as a nondestructive test for the examination and restoration of altered and damaged metal handwriting in criminal technology, which offers a fresh approach and method to deal with this issue.

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Identification of weld defects using magneto-optical imaging

Gao

Xie

et al. 2019

Int J Adv Manuf Technol

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Weldment Nondestructive Testing Using Magneto-optical Imaging Induced by Alternating Magnetic Field

Cited by 20 publications

References 19 publications

Quality Assessment of Laser Welding Dual Phase Steels

Quality Assessment of Laser Welding Dual Phase Steels

Research on the Recovery Technology of Damaged Characters Based on the Magneto-optical Method

Identification of weld defects using magneto-optical imaging

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