Noncontact nondestructive ultrasonic techniques for manufacturing defects monitoring in composites: a review

IF 5.7 2区 工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY
Hanadi Mortada, Sarah El Mousharrafie, Elien Mahfoud, M. Harb
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引用次数: 0

Abstract

Composite materials are widely used in most industries due to their high specific strength, specific stiffness, and their relatively lighter weight compared to other traditional materials. However, the presence of defects arising from manufacturing processes or during service loads can make these structures more susceptible to a diminished performance. Furthermore, the former defects are inevitable in composite structures, but they can be reduced. Each type of defect requires specific inspection techniques and configurations. In this work, a review of the different types of composites manufacturing processes and their corresponding resultant defects is presented with the various nondestructive evaluation techniques employed for these defects’ characterization. The emphasis of this paper is on ultrasonic inspection and detection techniques for they present high sensitivity to surface/subsurface discontinuities, superior depth of ultrasonic penetration for flaw detection, feasibility on large scales, and instantaneous and detailed images production. Notably, noncontact ultrasonic testing techniques are also reviewed, air-coupled techniques in specific, and highlighted as a fine alternative to conventional contact inspection systems as they reduce the restrictions that coexist with the use of couplants. Moreover, these ultrasonic testing techniques are summarized to show the latest research progress achieved in the field of air-coupled ultrasonic inspection systems for manufacturing defects’ monitoring in composite structures including delamination, porosity, dryness, waviness, and resin lack/excess. Finally, we highlight the type and central frequency of the transducers and experimental results present in literature and obtained in terms of both detection and size of the defects.
用于复合材料制造缺陷监测的非接触无损超声技术综述
复合材料由于其高比强度、比刚度以及与其他传统材料相比相对较轻的重量而被广泛应用于大多数行业。然而,由制造过程或在使用负载期间产生的缺陷的存在会使这些结构更容易受到性能降低的影响。此外,前一种缺陷在复合材料结构中是不可避免的,但它们可以减少。每种类型的缺陷都需要特定的检查技术和配置。在这项工作中,对不同类型的复合材料制造工艺及其相应的缺陷进行了综述,并采用了各种无损评估技术来表征这些缺陷。本文的重点是超声波检查和检测技术,因为它们对表面/次表面不连续性具有高灵敏度,用于探伤的超声波穿透深度优越,在大规模上具有可行性,并且可以即时生成详细的图像。值得注意的是,还回顾了非接触超声检测技术,特别是空气耦合技术,并强调它是传统接触检测系统的一种很好的替代方案,因为它们减少了与使用耦合剂共存的限制。此外,对这些超声检测技术进行了总结,以显示在空气耦合超声检测系统领域取得的最新研究进展,该系统用于监测复合材料结构中的缺陷,包括分层、孔隙率、干燥度、波纹度和树脂缺乏/过多。最后,我们强调了换能器的类型和中心频率,以及文献中的实验结果,这些结果是从缺陷的检测和尺寸两方面获得的。
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
CiteScore
12.80
自引率
12.10%
发文量
181
审稿时长
4.8 months
期刊介绍: Structural Health Monitoring is an international peer reviewed journal that publishes the highest quality original research that contain theoretical, analytical, and experimental investigations that advance the body of knowledge and its application in the discipline of structural health monitoring.
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