Nondestructive Testing by Frequency-Domain Continuous-Wave Ultrasound Reflectometry

IF 1 4区材料科学 Q3 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Research in Nondestructive Evaluation Pub Date : 2020-07-03 DOI:10.1080/09349847.2020.1795329

K. Stoev, T. Sawadogo

引用次数: 0

Abstract

ABSTRACT Currently, the primary method employed by ultrasound inspection systems is based on applying pulsed sound/ultrasound energy to the inspected part, and detecting reflected/transmitted pulses. Typically, pulse-based methods are essentially time-domain back-reflection methods, and time-of-flight is the main measured parameter. Recently, continuous-wave frequency-domain back-reflection meters were developed in the radar and in the fiber optics fields, which demonstrate significantly better spatial resolution, higher SNR, and ability to detect reflecting objects at very short distances. The same approach was used in this paper to develop a prototype continuous-wave ultrasound inspection system. The parameters of the prototype system are described, and the advantages and limitations of the continuous-wave ultrasound inspection method are discussed. Examples of the use of the system are presented.

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频域连续波超声反射法无损检测

目前，超声检测系统采用的主要方法是将脉冲声/超声能量施加到被检测部件上，并检测反射/透射脉冲。通常，基于脉冲的方法本质上是时域反向反射方法，飞行时间是主要的测量参数。近年来，连续波频域背反射仪在雷达和光纤领域得到了发展，具有较好的空间分辨率和较高的信噪比，能够在很短的距离内检测到反射物体。本文采用相同的方法开发了一种原型连续波超声检测系统。描述了原型系统的参数，讨论了连续波超声检测方法的优点和局限性。给出了系统的应用实例。

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

Research in Nondestructive Evaluation 工程技术-材料科学：表征与测试

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Research in Nondestructive Evaluation® is the archival research journal of the American Society for Nondestructive Testing, Inc. RNDE® contains the results of original research in all areas of nondestructive evaluation (NDE). The journal covers experimental and theoretical investigations dealing with the scientific and engineering bases of NDE, its measurement and methodology, and a wide range of applications to materials and structures that relate to the entire life cycle, from manufacture to use and retirement. Illustrative topics include advances in the underlying science of acoustic, thermal, electrical, magnetic, optical and ionizing radiation techniques and their applications to NDE problems. These problems include the nondestructive characterization of a wide variety of material properties and their degradation in service, nonintrusive sensors for monitoring manufacturing and materials processes, new techniques and combinations of techniques for detecting and characterizing hidden discontinuities and distributed damage in materials, standardization concepts and quantitative approaches for advanced NDE techniques, and long-term continuous monitoring of structures and assemblies. Of particular interest is research which elucidates how to evaluate the effects of imperfect material condition, as quantified by nondestructive measurement, on the functional performance.