图书简介
This monograph presents a Guided Wave Structural Health Monitoring (GWSHM) system for aeronautical composite structures. Particular attention is paid to the development of a reliable and reproducible system with the capability to detect and localise barely visible impact damage (BVID) in Carbon-Fibre Reinforced Polymer (CFRP) structures.A novel sensor installation method that offers ease of application and replacement as well as excellent durability is introduced. Electromechanical Impedance (EMI) is also introduced to assess the durability of the sensor installation methods in simulated aircraft operational conditions, including thermal cycles, fatigue loading and hot-wet conditions.Damage characterisation using GWSHM is described and used to investigate damage in different CFRP structures. Key issues in guided wave-based damage identification are highlighted and addressed, including wave mode and frequency selection, the influence of dynamic load, the validity of simulated damage, and the sensitivity of guided waves to impact damage in different CFRP materials.The influence of temperature on guided wave propagation in anisotropic CFRP structures is described, and a novel baseline reconstruction approach for temperature compensation is presented. Finally, a multi-level hierarchical approach for the quantification of an ultrasonic GWSHM system is presented.Key Features: oThis book presents new methods developed for the improvement of the reliability of Guided Wave Structural Health Monitoring (GWSGM) systems for aeronautical compositesoBook provides readers with an understanding of the challenges of the development of reliable GWSHM systems, as well as the methodologies developed for reliability improvement in the key aspects of GWSHM system design and applicationoParticular attention is devoted to the detection and localisation of barely visible impact damage in Carbon-Fibre Reinforced Polymer structures
Introduction; Fundamentals of Guided Wave Based Damage Identification; Installation Method for PZT Transducers onto Composite; Guided Wave Based Damage Characterisation in Composite Structures; Temperature Effect and Compensation for GWSHM; Hierarchical Approach for Quantification of GWSHM; Summary;
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