Multi-frequency localized wave energy for delamination identification using laser ultrasonic guided wave

Gao, Tianfang; Xiao, Liu; Zhu, Jianjian; Zhao, Bowen

doi:10.1016/j.ultras.2021.106486

Cited by 26 publications

(5 citation statements)

References 34 publications

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“…Ultrasonic waves generate a multitude of momentary and hightemperature, high-pressure cavitation bubbles in a liquid medium, sufficient to induce chemical bond rupture and thermal decomposition of organic and inorganic substances within these bubbles. [102][103][104] This facilitates agitation, renewal of non-homogeneous interfaces, and interfacial heat and mass transfer processes. Ample energy is thus provided for the delamination of bulk materials.…”

Section: The Ultrasonic Delamination Methodsmentioning

confidence: 99%

Ultrasound‐Assisted Preparation and Performance Regulation of Electrocatalytic Materials

Deng,

Chen,

et al. 2024

ChemPlusChem

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With the advancement of scientific research, the introduction of external physical methods not only adds extra freedom to the design of electro‐catalytical processes for green technologies but also effectively improves the reactivity of materials. Physical methods can adjust the intrinsic activity of materials and modulate the local environment at the solid‐liquid interface. In particular, this approach holds great promise in the field of electrocatalysis. Among them, the ultrasonic waves have shown reasonable control over the preparation of materials and the electrocatalytic process. However, the research on coupling ultrasonic waves and electrocatalysis is still early. The understanding of their mechanisms needs to be more comprehensive and deep enough. Firstly, this article extensively discusses the adhibition of the ultrasonic‐assisted preparation of metal‐based catalysts and their catalytic performance as electrocatalysts. The obtained metal‐based catalysts exhibit improved electrocatalytic performances due to their high surface area and more exposed active sites. Additionally, this article also points out some urgent unresolved issues in the synthesis of materials using ultrasonic waves and the regulation of electrocatalytic performance. Lastly, the challenges and opportunities in this field are discussed, providing new insights for improving the catalytic performance of transition metal‐based electrocatalysts.

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Section: The Ultrasonic Delamination Methodsmentioning

confidence: 99%

Ultrasound‐Assisted Preparation and Performance Regulation of Electrocatalytic Materials

Deng,

Chen,

et al. 2024

ChemPlusChem

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“…Previous LWE algorithms only analyzed narrowband wavenumber information. In contrast, Gao et al [ 59 ] took full advantage of the broadband characteristic of laser ultrasonic waves and used wavenumber information at multiple frequencies to optimize the damage details. High-accuracy imaging of circular delamination in aluminum plate bonded parts was achieved by data fusion.…”

Section: Detection Methods Based On Full Wavefield Datamentioning

confidence: 99%

A Review of Laser Ultrasonic Lamb Wave Damage Detection Methods for Thin-Walled Structures

Zheng

Luo

et al. 2023

Sensors

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Thin-walled structures, like aircraft skins and ship shells, are often several meters in size but only a few millimeters thick. By utilizing the laser ultrasonic Lamb wave detection method (LU-LDM), signals can be detected over long distances without physical contact. Additionally, this technology offers excellent flexibility in designing the measurement point distribution. The characteristics of LU-LDM are first analyzed in this review, specifically in terms of laser ultrasound and hardware configuration. Next, the methods are categorized based on three criteria: the quantity of collected wavefield data, the spectral domain, and the distribution of measurement points. The advantages and disadvantages of multiple methods are compared, and the suitable conditions for each method are summarized. Thirdly, we summarize four combined methods that balance detection efficiency and accuracy. Finally, several future development trends are suggested, and the current gaps and shortcomings in LU-LDM are highlighted. This review builds a comprehensive framework for LU-LDM for the first time, which is expected to serve as a technical reference for applying this technology in large, thin-walled structures.

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“…Shin et al [26] used the LU pulse-echo method to detect the debonding defects of cylindrical CFRP structures. Gao et al [27] proposed an algorithm of multi-frequency localized wave energy based on an LU Lamb wave to identify hidden delamination in multilayered structures. The amplitude characteristics of LU waves in different modes were explored for delamination detection in different metal-clad plates [10,28,29].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Bond Quality of Metal-Clad Plates Using Laser Ultrasonic Local Resonance

Ji,

Cao,

Zhang

2024

Coatings

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The effective detection of delamination defects, especially sub-millimeter delamination defects, in metal-clad plates is of great significance in improving product quality. In this work, the laser ultrasonic (LU) local resonance method is used to locate and characterize the sub-millimeter defects in stainless/carbon steel-clad plates. The influence of the delamination radius on the amplitude and resonant frequency of the laser ultrasound was investigated using 2D axisymmetric finite element (FE) simulations. The simulation results show that both the amplitude and the first resonance frequency (FRF) are effective features for detecting large-scale delamination defects, but the FRF is a better feature for detecting tiny delamination defects. A 304/Q235/304-clad plate specimen was made through a hot rolling bonding process, which contained a large number of self-forming delamination defects. The laser ultrasonic signals of different composite states collected in the experiment have good consistency with the simulated waveforms. The experimental results show that the laser ultrasonic local resonance method is a high-resolution imaging method, which can locate and characterize the sub-millimeter delamination defects in stainless/carbon steel-clad plates.

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Multi-frequency localized wave energy for delamination identification using laser ultrasonic guided wave

Cited by 26 publications

References 34 publications

Ultrasound‐Assisted Preparation and Performance Regulation of Electrocatalytic Materials

Ultrasound‐Assisted Preparation and Performance Regulation of Electrocatalytic Materials

A Review of Laser Ultrasonic Lamb Wave Damage Detection Methods for Thin-Walled Structures

Evaluation of the Bond Quality of Metal-Clad Plates Using Laser Ultrasonic Local Resonance

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