陶瓷基复合材料中的声发射

IF 12.2 1区 工程技术 Q1 MECHANICS
N. Tulshibagwale, Neal Brodnik, Caelin Muir, Ashley Hilmas, James Kiser, Craig Smith, Amjad Almansour, M. Presby, Samantha H. Daly
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引用次数: 0

摘要

要将 CMC 集成到涡轮发动机和航空航天结构等安全关键应用中,就必须充分了解其在使用条件下的预期损坏演变情况,并采用实时健康监测方法来评估其损坏状态。声发射(AEs)是在损伤形成过程中发射的瞬态弹性波,由于其灵敏度高、时间分辨率准确,而且与其他无损评价(NDE)技术相比相对易于使用,因此测量声发射可增强评估 CMC 损伤演变和结构健康状况的能力。数值模拟方法和数据驱动模型开发方面的最新进展,与改进的多模态实验表征方法和传感器硬件相结合,正在迅速推动声学效应成为一种成熟的损伤量化技术。本综述讨论了声发射的基本原理,为其实验表征和分析提供了实用指南,并对当前的先进技术进行了展望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Acoustic Emission in Ceramic Matrix Composites
The integration of CMCs into safety critical applications, such as turbine engines and aerospace structures, necessitates a sound understanding of their expected damage evolution under in-service conditions and real-time health-monitoring methods to assess their damage state. The measurement of acoustic emissions (AEs), the transient elastic waves emitted during damage formation, offers an enhanced capability for evaluating damage evolution and structural health in CMCs due to its high sensitivity, accurate temporal resolution, and relative ease of use compared to other non-destructive evaluation (NDE) techniques. Recent advances in numerical simulations methods and data-driven model development, in combination with improved multimodal experimental characterization methods and sensor hardware, are rapidly advancing AE to a mature technique for damage quantification. This review discusses the fundamental principles of acoustic emissions, provides practical guidelines on their experimental characterization and analysis, and offers perspectives on the current state-of-the-art.
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来源期刊
CiteScore
28.20
自引率
0.70%
发文量
13
审稿时长
>12 weeks
期刊介绍: Applied Mechanics Reviews (AMR) is an international review journal that serves as a premier venue for dissemination of material across all subdisciplines of applied mechanics and engineering science, including fluid and solid mechanics, heat transfer, dynamics and vibration, and applications.AMR provides an archival repository for state-of-the-art and retrospective survey articles and reviews of research areas and curricular developments. The journal invites commentary on research and education policy in different countries. The journal also invites original tutorial and educational material in applied mechanics targeting non-specialist audiences, including undergraduate and K-12 students.
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