利用扫描声源技术和抑制光栅波瓣产生的机载超声相控阵技术对金属板进行导波传播成像无损检测

IF 0.6 Q4 ACOUSTICS

Acoustical Science and Technology Pub Date : 2023-11-01 DOI:10.1250/ast.44.431

Kyosuke Shimizu, Ayumu Osumi, Youichi Ito

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引用次数: 0

摘要

我们一直在研究使用扫描机载超声源和非线性谐波方法进行无损检测，并研究了使用机载超声相控阵(AUPA)通过电子控制扫描声源来实现高速无损检测。然而，aupa除了在焦点处产生主瓣外，还会产生不必要的焦点，例如光栅瓣(GLs)。在无损检测中，由于ML和gl同时激发测量对象，结果中会出现伪影。通过调整AUPA超声发射器的间距可以抑制GL的产生，从而减少伪影的产生。本文通过实验检验，验证了AUPA抑制GL的产生，减少了无损检测结果中的伪影。我们在不使用声窗的情况下，通过可视化导波传播对金属板上的伪缺陷进行成像。

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Non-destructive testing of metal plates by guided wave propagation image using scanning sound source technique and airborne ultrasound phased array with suppressed grating lobe generation

We have been investigating non-destructive testing using a scanning airborne ultrasound source and a nonlinear harmonic method, and we have examined using an airborne ultrasound phased array (AUPA) to achieve high-speed non-destructive testing by electronically controlled scanning of the sound source. However, AUPAs can generate unnecessary foci, such as grating lobes (GLs), in addition to the main lobe (ML) generated at the focal point. In non-destructive testing, artifacts occur in the results because the ML and GLs excite the measurement object simultaneously. The GL generation can be suppressed by adjusting the spacing of the AUPA ultrasound emitters, which can decrease the generation of artifacts. In this paper, suppression of GL generation by using an AUPA and the reduction of artifacts in non-destructive testing results were verified by an experiment examining. We imaged a pseudo-defect on a metal plate by visualizing guided wave propagation without using an acoustic window.

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来源期刊

Acoustical Science and Technology ACOUSTICS-

CiteScore

1.60

自引率

14.30%

发文量

期刊介绍： Acoustical Science and Technology(AST) is a bimonthly open-access journal edited by the Acoustical Society of Japan and was established in 1980 as the Journal of Acoustical Society of Japan (E). The title of the journal was changed to the current title in 2001. AST publishes about 100 high-quality articles (including papers, technical reports, and acoustical letters) each year. The scope of the journal covers all fields of acoustics, both scientific and technological, including (but not limited to) the following research areas. Psychological and Physiological Acoustics Speech Ultrasonics Underwater Acoustics Noise and Vibration Electroacoustics Musical Acoustics Architectural Acoustics Sonochemistry Acoustic Imaging.