Evaluation of Atmospheric Corrosion on Coated Steel Using -Band Sweep Frequency Microwave Imaging

Zhang, Hong; He, Yunze; Gao, Bin; Tian, Gui Yun; Xu, Lu-Xiong; Wu, Ruizhi

doi:10.1109/jsen.2016.2522983

Cited by 27 publications

(10 citation statements)

References 35 publications

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“…This can be achieved by correlation using advanced feature extraction methods [43]. Zhang and others proposed a K-band sweep frequency microwave imaging system with a waveguide aperture [44]. Figures 8(a) and 8(b) show the images of coated samples with 1-and 6month corrosions, respectively.…”

Section: Microwave Ndt (Mndt)mentioning

confidence: 99%

Nondestructive Testing for Corrosion Evaluation of Metal under Coating

Zhang

Yang

et al. 2021

Journal of Sensors

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The use of steel has grown rapidly over the past decades. However, corrosion under coating detection still presents challenges for nondestructive testing (NDT) techniques. One of such challenges is the lift-off introduced by complex structures. Inaccessibility due to structure leads corrosion to be undetected, which can lead to catastrophic failure. Furthermore, lift-off effects reduce the sensitivities. The limitations of existing NDT techniques heighten the need for novel approaches to the characterization of corrosion. This paper begins with a discussion of the challenges associated with corrosion detection of metal under coating. Secondly, reviews are given of the most NDT methods used for the detection of corrosion under coating. The different techniques based on nondestructive testing methods such as ultrasonic, acoustic, electromagnetic, radiographic, and thermographic have been detailed out. This review presents the significance and advantages provided by the emerging NDT techniques. In the end, the trends and identified problems are summarized.

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Section: Microwave Ndt (Mndt)mentioning

confidence: 99%

Nondestructive Testing for Corrosion Evaluation of Metal under Coating

Zhang

Yang

et al. 2021

Journal of Sensors

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“…Also, wavelet method was used by [16] [17]. Zhang et al [18] also used this method of packet decomposition energies as a sub-band level in corrosion identification. Tao et al [19] studied the corrosion process of aluminium alloys with the wavelet method, where the study concluded that the values of sub-image energy reduce with prolonged exposure.…”

Section: Related Workmentioning

confidence: 99%

Robotic Model for Unmanned Crack and Corrosion Inspection

Oyekola¹,

Mohamed*²,

Pumwa³

2019

IJITEE

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After prolonged usage of materials, the formation of cracks and corrosion initiates due to stress, loading condition, the environment of operation, etc. and this affects the structural integrity of structures. Periodic inspection of structures is usually planned, especially in industries where the impact of failure could be devastating, such as oil and gas pipelines, storage tanks, vessels, and airplanes, etc. which are just a few amongst others. This inspection is often aimed at detecting cracks and corrosion of internal and external components using several forms of non-destructive testing mechanism usually performed by a specialist at a high rate. To reduce the cost of inspection as well as downtime due to inspections and maintenance, deployments of mobile robots with fault tracking and identification purpose are steadily increasing. This paper, therefore, details the implementation of an image processing technique using MATLAB to identify defects of structural elements.

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“…These samples were exposed to a marine atmosphere for different durations (1, 6, 10 and 12 months) to form distinct atmospheric corrosion stage. In order to investigate the corrosion stage on mild steel (S275) from a fundamental standpoint, laser profilometry and pulsed eddy current measurements were performed in laboratory conditions at room temperature [30,31], as shown in Table 1. The corrosion stage here is the chemical reaction progress at which a metal deteriorates in a restricted environment over exposure time including corrosion layer property variation and thickness variation.…”

Section: A Corrosion Samplesmentioning

confidence: 99%