3D-printed phononic crystal filters for second harmonics separation in nonlinear ultrasonic non-destructive testing

IF 3.8 2区物理与天体物理 Q1 ACOUSTICS

Ultrasonics Pub Date : 2025-05-31 DOI:10.1016/j.ultras.2025.107720

Yue Chen , Youxuan Zhao , Mingxi Deng , Ning Hu

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引用次数: 0

Abstract

Higher harmonic method is widely employed to detect and evaluate early material degradation in nonlinear ultrasonic non-destructive testing. However, the separation of extremely weak nonlinear harmonics (especially second harmonics) from received signals represents a significant challenge. Therefore, it is feasible to use the bandgap property of phononic crystals to achieve second harmonics separation. In this paper, numerical simulations are performed to verify the filtering capability of the filters. The influence of the unit-cell’s spatial arrangement in the filter is also numerically investigated. Meanwhile, 3D-printed cubic-structured phononic crystal filters are employed to experimentally demonstrate the efficient filtering capability for separating. It is found that the accuracy of 3D-printing can significantly affect the filtering capability. The 3D-printing accuracy would be increased with the filtering frequency of the filter. This study provides numerical and experimental basis for the application of the 3D-printed cubic-structured phononic crystal filter in NDT.

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三维打印声子晶体滤波器用于非线性超声无损检测中的二次谐波分离

在非线性超声无损检测中，高谐波法被广泛用于材料早期退化的检测和评价。然而，从接收信号中分离极弱的非线性谐波（特别是次谐波）是一个重大的挑战。因此，利用声子晶体的带隙特性实现二次谐波分离是可行的。本文通过数值仿真验证了滤波器的滤波能力。本文还对单元格在滤波器中的空间排列方式的影响进行了数值研究。同时，利用3d打印的立方结构声子晶体滤波器，实验验证了有效的分离滤波能力。研究发现，3d打印的精度会显著影响过滤能力。随着过滤器过滤频率的增加，3d打印精度也会提高。本研究为3d打印立方结构声子晶体滤波器在无损检测中的应用提供了数值和实验依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ultrasonics 医学-核医学

CiteScore

7.60

自引率

19.00%

发文量

186

审稿时长

3.9 months

期刊介绍： Ultrasonics is the only internationally established journal which covers the entire field of ultrasound research and technology and all its many applications. Ultrasonics contains a variety of sections to keep readers fully informed and up-to-date on the whole spectrum of research and development throughout the world. Ultrasonics publishes papers of exceptional quality and of relevance to both academia and industry. Manuscripts in which ultrasonics is a central issue and not simply an incidental tool or minor issue, are welcomed. As well as top quality original research papers and review articles by world renowned experts, Ultrasonics also regularly features short communications, a calendar of forthcoming events and special issues dedicated to topical subjects.