基于导波的飞机复合结构雷击事件在线监测

IF 7.1 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-06-06 DOI:10.1016/j.compstruct.2025.119360

Jian Cai , Jiawen Ji , Shangchen Fu , Lihua Shi

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引用次数: 0

摘要

雷击监测对飞机复合材料结构的重要性已逐渐得到认识。然而，由于雷击的剧烈破坏过程和恶劣的电磁环境，LSM特别是雷电附着点定位的基础和关键任务仍然是一个挑战。为了克服这一挑战，提出了一种基于导波的LSM方法。该方法利用原位压电（PZT）片在线采集雷击诱导的导波响应，在严格的电磁条件下也能通过雷击复合材料进行长距离传播，然后应用于被监测结构上的附点成像。在分析了雷击对复合材料的直接影响后，探讨了PZT片导波响应的压电在线传感，其中特别考虑了电磁保护和短路保护，以应对极端雷击条件。在此基础上，结合延迟求和算法，提出了雷击事件的导波成像方法，用于复合材料结构附着点定位。最后，通过对典型各向异性碳纤维增强塑料（CFRP）复合材料板的人工雷击试验，充分验证了导波对雷击事件在线传感成像的有效性。

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Guided wave-based online monitoring of lightning strike events on the aircraft composite structures

The importance of lightning strike monitoring (LSM) for aircraft composite structures has been progressively recognized. However, due to the drastic damage process and harsh electromagnetic environment of lightning strikes, LSM, especially the fundamental but critical task of lightning attachment-point localization remains a challenge. A guided wave-based LSM method of composite structures is presented to overcome the challenge. In the method, the lightning strike-induced guided wave responses, capable of long-distance propagation through struck composites even under the strict electromagnetic condition, are online collected with in-situ piezoelectric (PZT) wafers and then applied to image the attachment points over the monitored structures. After the direct effects of lightning strikes on composites are analyzed, the piezoelectric online sensing of guided wave responses with PZT wafers is explored, during which the electromagnetic protection and short-circuiting preservation are particularly considered to deal with the extreme lightning strike condition. Furthermore, associated with the delay-and-sum algorithm, the guided wave imaging method of lightning strike events is developed for attachment point localization on composite structures. Finally, the efficiency of guided wave online sensing and imaging of lightning strike events is fully verified by the artificial lightning strike tests on the typical anisotropic carbon fiber reinforced plastic (CFRP) composite plates.

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.