CAREER: Next-Generation High-Sensitivity Damage Detection and Sensing Based on Enhancing Nonlinear Dynamics and Phase Space Pattern Recognition

职业：基于增强非线性动力学和相空间模式识别的下一代高灵敏度损伤检测和传感

• 批准号: 0347327
• 负责人: Bogdan Epureanu
• 金额: $ 40万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-06-01 至 2010-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0347327&HistoricalAwards=false
• 关键词: CAREER; Next; Generation; Sensitivity; Damage

CAREER: Next-Generation High-Sensitivity Damage Detection and Sensing Based on Enhancing Nonlinear Dynamics and Phase Space Pattern Recognition Most vibration-based damage detection methods are designed for linear vibrations while far fewer apply to nonlinear systems. Many of the current nonlinear methods have important limitations, e.g. difficulty tackling high-dimensional systems. This integrated research and educational program eliminates several of these limitations by using a radically different approach. The main research goal is to develop robust and highly sensitive nonlinear vibration-based techniques for sensing and detecting the location and level of multiple simultaneous damages in high-dimensional systems such as complex fluid-structural systems. The main educational goal is the development of a program focused on enhancing engineering intuition with emphasis on nonlinear dynamics. The educational effort integrates research with a broad spectrum of educational and outreach activities, and includes: (a) integrating nonlinear dynamics into undergraduate courses in engineering, (b) developing advanced undergraduate and graduate courses on nonlinear dynamics, (c) implementing outreach activities for K-12 students. This integrated research and educational program will provide a new and comprehensive methodology for damage detection in high-dimensional nonlinear complex systems. This research will make significant contributions to the fields of structural dynamics, fluid-structure interactions, and sensing, and it has immediate potential to impact industry because it addresses important practical engineering problems in, for instance, aerospace, civil and sensing technologies. Also, this research represents a potential benefit to society at large, and it is strengthened by a broad dissemination to enhance scientific understanding.

职业：基于增强非线性动力学和相空间模式识别的下一代高灵敏度损伤检测和传感大多数基于振动的损伤检测方法都是针对线性振动设计的，而适用于非线性系统的方法要少得多。目前的许多非线性方法都有很大的局限性，例如难以处理高维系统。这种综合的研究和教育计划通过使用完全不同的方法消除了其中的一些限制。 主要研究目标是开发鲁棒性和高灵敏度的非线性振动为基础的技术，用于传感和检测的位置和水平的多个同时在高维系统，如复杂的流体结构系统的损伤。 主要的教育目标是开发一个专注于增强工程直觉的程序，重点是非线性动力学。教育工作将研究与广泛的教育和推广活动相结合，包括：（a）将非线性动力学纳入工程本科课程，（B）开发非线性动力学的高级本科和研究生课程，（c）为K-12学生开展推广活动。 这一综合性的研究和教育计划将为高维非线性复杂系统的损伤检测提供一种新的和全面的方法。这项研究将为结构动力学，流体-结构相互作用和传感领域做出重大贡献，并且它具有直接影响工业的潜力，因为它解决了航空航天，民用和传感技术等重要的实际工程问题。此外，这项研究对整个社会具有潜在的好处，通过广泛传播以提高科学认识，这项研究得到了加强。