Ultrasonic high frequency guided wave for detection and identification of defect location in seal welds of sodium cooled fast reactor fuel subassemblies

Dhayalan, R.; Kumar, Anish; Rajkumar, K.V.; Mukhopadhyay, C. K.

doi:10.1016/j.anucene.2019.06.064

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…Eddy current inspection is used in the field of steel plate weld defect detection due to its low inspection cost and easy automation [1], and its final detection effect is directly related to the probe structure. In the early 21st century, Hoshikawa proposed a uniform eddy current detection method (UEC) [2,3], a new type of orthogonal probe was designed; in terms of excitation method, researchers such as Song Kai from Nanchang University of Aeronautics and Astronautics used a specimen with ferromagnetic properties and carried out an in-depth analysis of the design of the probe.…”

Section: Introductionmentioning

confidence: 99%

Study on the Detection of Defects in Steel Plate Welds with θ Eddy Current Probe

Guo

2022

Advances in Transdisciplinary Engineering

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The evaluation of weld defects plays an important role in ensuring the safety of equipment, but due to the unevenness of the weld itself, the use of conventional eddy current probes to detect weld defects can be affected by the lifting effect, so this paper introduces a new type of θ eddy current probe for the evaluation of steel plate weld defects. Firstly, using COMSOL simulation software, a model of the probe and the steel plate weld is constructed, and the effect of changes in excitation coil height and thickness as well as detection coil height and thickness on the detection sensitivity of the probe is fully investigated, and the optimum probe size is calculated by combining the results of simulation and optimisation analysis. Finally, the experimental platform is built and the test results show that the new θ eddy current probe has a good suppression effect on the lifting effect caused by the different width and depth of the weld seam and the lifting effect caused by the unevenness of the surface of the weld seam.

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Section: Introductionmentioning

confidence: 99%

Study on the Detection of Defects in Steel Plate Welds with θ Eddy Current Probe

Guo

2022

Advances in Transdisciplinary Engineering

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“…They used the mixing wave signals to locate the defect's position. Dhayalan et al 18 detected the damages in fuel subassembly hexcan seal welds using highfrequency guided waves by conducting numerical simulations and experiments. The studies conducted so far include the methods of excitation of HOMC guided waves and detection of defects.…”

Section: Introductionmentioning

confidence: 99%

Contribution of Lamb wave modes in the formation of higher order modes cluster (HOMC) guided waves

Abbasi

Honarvar

2021

Proceedings of the Institution of Mechanical Engineers, Part C:

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In recent years, Higher Order Modes Cluster (HOMC) guided waves have been considered for ultrasonic testing of plates and pipes. HOMC guided waves consist of higher order Lamb wave modes that travel together as a single nondispersive wave packet. The objective of this paper is to investigate the effect of frequency-thickness value on the contribution of Lamb wave modes in an HOMC guided wave. This is an important issue that has not been thoroughly investigated before. The contribution of each Lamb wave mode in an HOMC guided wave is studied by using a two-dimensional finite element model. The level of contribution of various Lamb wave modes to the wave cluster is verified by using a 2D FFT analysis. The results show that by increasing the frequency-thickness value, the order of contributing modes in the HOMC wave packet increases. The number of modes that comprise a cluster also increases up to a specific frequency-thickness value and then it starts to decrease. Plotting of the cross-sectional displacement patterns along the HOMC guided wave paths confirms the shifting of dominant modes from lower to higher order modes with increase of frequency-thickness value. Experimental measurements conducted on a mild steel plate are used to verify the finite element simulations. The experimental results are found to be in good agreement with simulations and confirm the changes observed in the level of contribution of Lamb wave modes in a wave cluster by changing the frequency-thickness value.

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Measurement method for deformation and contact force of the fuel assembly for China fast reactor under thermal gradient

Wang

Chen

Shi

et al. 2020

Annals of Nuclear Energy

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Ultrasonic high frequency guided wave for detection and identification of defect location in seal welds of sodium cooled fast reactor fuel subassemblies

Cited by 6 publications

References 18 publications

Study on the Detection of Defects in Steel Plate Welds with θ Eddy Current Probe

Study on the Detection of Defects in Steel Plate Welds with θ Eddy Current Probe

Contribution of Lamb wave modes in the formation of higher order modes cluster (HOMC) guided waves

Measurement method for deformation and contact force of the fuel assembly for China fast reactor under thermal gradient

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