分析材料的声音:应用声发射技术监测材料行为

C. R. Ríos-Soberanis, Takenobu Sakai, S. Wakayama
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引用次数: 0

摘要

在过去的几年里,人们开始关注复合材料根据其机械行为所产生的破坏机制。这种关注导致了新型复合结构的开发,以增强其机械阻力并控制破坏过程。然而,当务之急是了解这些材料在外部应力作用下的机械性能。在这方面,应用声发射(AE)技术是众所周知的一种非常有效的技术,可以识别和监测不同类型材料和结构的损坏过程,并提供有价值的信息。声发射是一种非破坏性技术(NDT),能够检测微小损伤的发生和传播,以及几种类型的破坏模式,如加固/基体界面脱胶、基体开裂、分层、断裂等。本文探讨了 AE 在复合材料中的应用,复合材料的断裂过程通常更为复杂,数据解读也相应更为困难。最后,为了不断提高该技术的可靠性,一些研究通过 AE 技术的创新提高了其可信度。本文讨论了一些观点。
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Analyzing the Sound of Materials: Application of Acoustic Emission Technique for Monitoring Material Behavior
During the last years, some concerns have arisen in relation to the outcome of mechanisms of failure in composite materials according to its mechanical behavior. Such interest resulted in the development of new complex structures in order to enhance its mechanical resistance and the controlling of damage processes. Nevertheless, it is imperative to understand the degree of mechanical performance that these materials can achieve when under external stresses. In this regard, applying Acoustic Emission (AE) technique is widely known as a very effective technology for identifying and monitoring damage progression on different kind of materials and structures providing valuable information. AE is a non-destructive technique (NDT) capable of detecting micro damage initiation and propagation along several types of failure modes such as reinforcement/matrix interfacial debonding, matrix cracking, delamination, fracture, etc. This paper examines applications of AE regarding to composite materials where fracture processes are generally more complex and data interpretation is correspondingly more difficult. Finally, in order to continuously improve the reliability of this technique, several researches have advanced its trustworthiness through innovations in AE technology. Some perspectives are discussed.
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