Nondestructive Testing Method of Weak Adhesion Defects in Composite Insulation Equipment Based on Analysis of Ultrasonic Signal

Zhang, S.; Wang, H.; Cheng, Li; Liao, Ruijin; Guo, Chao

doi:10.1109/ichve.2018.8642075

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Zhang et al [ 10 ] established acoustic models and bilinear stiffness models of micro-bonding at different stages, which proved that the bonding property of composite insulation is related to the acoustic impedance of the interface and the nonlinear deformation of its constitutive relation. Additionally, the nonlinear distortion of high-power ultrasonic wave was used to diagnose the micro-bonding defects

at the early stage of the composite insulation interface [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Energy Transfer Efficiency Based Nonlinear Ultrasonic Testing Technique for Debonding Defects of Aluminum Alloy Foam Sandwich Panels

Yao

Liu

et al. 2023

Sensors

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In order to improve the accuracy of detection results of debonding defects of aluminum alloy thin plate, the nonlinear ultrasonic technology is used to detect the simulated defect samples, aiming at problems such as near surface blind region caused by the interaction of incident wave, reflected wave and even second harmonic wave in a short time due to the small thickness of thin plates. An integral method based on energy transfer efficiency is proposed to calculate the nonlinear ultrasonic coefficient to characterize the debonding defects of thin plates. A series of simulated debonding defects of different sizes were made using aluminum alloy plates with four thicknesses of 1 mm, 2 mm, 3 mm and 10 mm. By comparing the traditional nonlinear coefficient with the integral nonlinear coefficient proposed in this paper, it is verified that both methods can quantitatively characterize the size of debonding defects. The nonlinear ultrasonic testing technology based on energy transfer efficiency has higher testing accuracy for thin plates.

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at the early stage of the composite insulation interface [ 11 ].…”

Section: Introductionmentioning

confidence: 99%