集成的MUSIC阵列用于复杂复合结构中的高精度损伤诊断
Fei Zheng1, Shenfang Yuan1, Qiuhui Xu1
1Research Center of Structural Health Monitoring and Prognosis, State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China.
Ultrasonics
|August 2, 2024
概括
本研究引入了一个集成的多重信号分类 (MUSIC) 阵列,用于精确的损伤成像复杂的复合结构. 新方法提高了飞机结构健康监测的准确性和可靠性.
科学领域:
- 材料科学 材料科学 材料科学
- 航空航天工程 航空航天工程
- 结构健康监测 结构健康监测
背景情况:
- 基于引导波 (GW) 的多重信号分类 (MUSIC) 损坏成像为复合结构提供了高分辨率.
- 挑战包括传感器性能变化,电线重量,复杂几何形状中的信号衰减,以及由于手动放置和异构性而导致的相位错误.
- 这些问题降低了飞机应用中的成像准确性和长期传感器可靠性.
研究的目的:
- 为诊断复杂的复合材料损伤提出一个高精度的集成MUSIC阵列.
- 为应对具有复杂结构的材料损伤成像方面的挑战.
- 为了提高准确性,减轻重量,并提高复杂结构配置的适应性.
主要方法:
- 采用阻抗曲线选和表面安装联合固化技术来管理传感器性能变化,增强布局统一性和改善长期稳定性.
- 在集成的MUSIC设计中开发了一个焦点补偿算法,以提高精度,最大限度地减轻重量,并适应复杂结构.
- 在复杂的复合材料翅膀盒段上实验验验证了该方法.
主要成果:
- 集成的MUSIC阵列有效地管理传感器性能变化,并改善布局统一性.
- 焦点补偿算法提高了复杂结构的成像精度和适应性.
- 实验验证表明,在定位撞击损伤时,机翼箱片段的最大误差为2厘米.
结论:
- 拟议的高精度集成MUSIC阵列有效地克服了复合材料损坏诊断常规方法的局限性.
- 该方法为复杂的复合材料飞机结构中的结构健康监测提供了可靠和准确的解决方案.
- 这项技术显着有望通过精确的损坏定位来提高飞机安全和维护.
相关概念视频
01:19MALDI-TOF Mass Spectrometry
Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
01:21Mass Spectrometry: Complex Analysis
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
01:21Tandem Mass Spectrometry
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
01:08Matrix-Assisted Laser Desorption Ionization (MALDI)
Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI is an ionization technique, widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.The analyte of interest, a biomolecule or a mixture of biomolecules, is mixed with a suitable matrix...
01:25Rapid Identification of Pathogens
MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...