Monitoring localized cracks on under pressure concrete nuclear containment wall using linear and nonlinear ultrasonic coda wave interferometry

Legland, Jean-Baptiste; Abraham, Odile; Durand, Olivier; Hénault, Jean-Marie

doi:10.1063/1.5031646

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…For multilayer adhesive-bonded structures low-frequency acoustic methods are often used. They allow detecting gap areas of compounds in multilayered glued structures made of composites based on carbon, boron, glass, organic fibers [2][3][4][5]. However, zones with layers adhesion violation that do not have a gap filled with gas are not detected by low-frequency acoustic methods.…”

Section: Introductionmentioning

confidence: 99%

Thermal Method as a Non-Destructive Testing of Thin-Walled Parts

Kaledin

Budadin

Vyachkina

et al. 2019

MSF

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Non-destructive testing (NDT) of thin-walled parts is being considered. This technique is based on registration of changes in thermal fields created by sources on internal defects of the material. Mathematical model calculating surface temperatures of the part in each time-step has been built. The deduced system has been transformed into matrix format by the finite elements method. Solution has been found by the finite difference method. Actual tests has been conducted registering changes in surface temperature of the plate with symmetrical and asymmetrical internal source position. The model has been fine-tuned based on comparison of actual tests’ results with numerical calculations.

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Section: Introductionmentioning

confidence: 99%

Thermal Method as a Non-Destructive Testing of Thin-Walled Parts

Kaledin

Budadin

Vyachkina

et al. 2019

MSF

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Towards quantifying the effect of pump wave amplitude on cracks in the Nonlinear Coda Wave Interferometry method

Hilloulin

Chupin

et al. 2023

Ultrasonics

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Vibration Monitoring of Nuclear Power Plant Containment Buildings During the Integrated Leakage Rate Test for Structural Condition Assessment

Eiras¹,

Payan²,

Rakotonarivo³

et al. 2022

Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems

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This study investigates the use of the operational vibrations produced during the Integrated Leak Rate Test of nuclear power plant containment buildings for further informing on its mechanical condition. The experiment is performed on a 1:3-scale containment building mock-up. The results show that meaningful vibrations were generated during the pressurization test. Different features were extracted from the vibration signals and analyzed as a function of the internal pressure. Experimental modal analysis was performed and demonstrated that several frequency peaks generated during the pressurization cycle effectively corresponded to the eigenmodes of the containment building. The identified operational frequency modes exhibited remarkable hysteretic dependencies on the internal pressure. The latter was phenomenologically described through a simplified 2D Finite Element Model of the vessel. Besides, a surrogate statistical model based on the Principal Component Analysis of the vibration data was proposed as a baseline and so detect abnormal behavior. Then, different synthetic damage scenarios were created by subtlety altering the recorded signals and ultimately substantiate the capability of the statistical model to detect these odd signals. Finally, conclusions were drawn regarding the possibility of using mechanical vibrations for assisting in the licensing process of nuclear power plants and monitor the structural health condition of in-service containment buildings.

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Monitoring localized cracks on under pressure concrete nuclear containment wall using linear and nonlinear ultrasonic coda wave interferometry

Cited by 3 publications

References 9 publications

Thermal Method as a Non-Destructive Testing of Thin-Walled Parts

Thermal Method as a Non-Destructive Testing of Thin-Walled Parts

Towards quantifying the effect of pump wave amplitude on cracks in the Nonlinear Coda Wave Interferometry method

Vibration Monitoring of Nuclear Power Plant Containment Buildings During the Integrated Leakage Rate Test for Structural Condition Assessment

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