使用超音速喷流的空气耦合宽带冲击回波致动装置

IF 2.6 3区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Journal of Nondestructive Evaluation Pub Date : 2024-04-13 DOI:10.1007/s10921-023-01043-8

Christoph Strangfeld, Bjarne Grotelüschen, Benjamin Bühling

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引用次数: 0

摘要

摘要冲击回波法（IE）是土木工程中常用的一种无损检测方法。我们提出了一种基于超音速射流的全新空气耦合致动方法。喷射声产生的声压持续很高，频率带宽很宽。我们在两个混凝土试件上对这种利用气声进行空气耦合 IE 的新概念进行了评估，并使用带物理接触的经典 IE 设备进行了验证。结果显示与预期频率高度一致。分层的深度和尺寸都能被正确检测出来。这证明了基于超音速喷射流的空气耦合 IE 的高可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Air-Coupled Broadband Impact-Echo Actuation Using Supersonic Jet Flow

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Air-Coupled Broadband Impact-Echo Actuation Using Supersonic Jet Flow

The impact-echo method (IE) is a non-destructive testing method commonly used in civil engineering. We propose a completely new approach for air-coupled actuation based on supersonic jet flow. The impinging jet sound generates continuously high sound pressures with a broad frequency bandwidth. This novel concept of utilising aeroacoustic sound for air-coupled IE was evaluated on two concrete specimens and validated using a classical IE device with physical contact. The results show a high agreement with the expected frequencies. Delaminations are correctly detected in depth and size. This proves the high reliability of air-coupled IE based on supersonic jet flow.

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来源期刊

Journal of Nondestructive Evaluation 工程技术-材料科学：表征与测试

CiteScore

4.90

自引率

7.10%

发文量

审稿时长

9 months

期刊介绍： Journal of Nondestructive Evaluation provides a forum for the broad range of scientific and engineering activities involved in developing a quantitative nondestructive evaluation (NDE) capability. This interdisciplinary journal publishes papers on the development of new equipment, analyses, and approaches to nondestructive measurements.