摘要
飞行器结构健康监测对保障飞行安全、降低飞行器维护成本具有重要意义,压电导波结构健康监测技术由于对小损伤敏感、可在线或离线监测,应用前景广阔。针对飞行器结构地面快速监测应用,研制了一种小型化便携式的压电导波结构健康监测系统。首先提出了一种分层设计的总体架构,并对系统的软硬件设计展开了研究,系统设计体积仅为273 mm×184 mm×59 mm,重量小于3 kg,支持32个传感器通道,激励电压幅值可达140 V_(pp),最大采样率60 MS/s。最后开展了系统应用验证实验,实现了对金属结构裂纹扩展的准确监测。
Aircraft structural health monitoring is of great significance to ensure flight safety and reduce aircraft maintenance costs. Piezoelectric guided wave-based structural health monitoring technology is sensitive to small damage and can be applied to online and offline monitoring, so it has a broad application prospect. In this paper, aiming at the ground rapid monitoring application of aircraft structure, a miniaturized and portable piezoelectric guided wave-based structure health monitoring system is developed. Firstly, a hierarchical design architecture is proposed, and the hardware and software design of the system is studied. The design volume of the system is only 273 mm×184 mm×59 mm, the weight is less than 3 kg, it can support 32 sensor channels, the excitation voltage amplitude can reach 140 V_(pp), and the maximum sampling rate can reach 60 MS/s. Finally, the system realized the accurate monitoring of crack propagation of metal structure through the application verification.
作者
丁睿
邱雷
Ding Rui;Qiu Lei(Research Center of Structural Health Monitoring and Prognosis,State Key Lab of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics Nanjing 210016,China)
出处
《国外电子测量技术》
北大核心
2021年第6期64-70,共7页
Foreign Electronic Measurement Technology
基金
国家自然科学基金创新群体项目(51921003)
江苏省重点研发计划(BE2018123)
江苏省六大人才高峰(GDZB-035)
教育部霍英东青年教师基金(161048)
江苏高校优势学科建设工程项目资助。
关键词
飞行器
结构健康监测
导波
压电传感器
系统集成
小型化
aircraft
structural health monitoring
guided wave
piezoelectric sensor
system integration
miniaturization
