ENGG(SERC) 3-918: Advanced Structural Health Monitoring ( L-T-P-C) :3-1-0-3

Course Coordinator : Dr. A. Rama Mohan Rao

Introduction: SHM scheme, various steps in SHM, damage diagnostic methods, output only damage diagnostic methods, challenges in SHM, Experimental modal analysis, operational modal analysis and combined methods; Vibration based damage diagnostic methods: Frequencies, mode shapes, modal flexibility, modal strain energy, curvature mode shapes, mode shape relative difference, frequency response functions. Limitations of vibration based damage detection techniques; Non-model based damage detection techniques: Singular Value Decomposition, Principal Component Analysis/ Proper Orthogonal Decomposition, Demonstration of effectiveness of PCA based algorithms through numerical examples; Environment Variability in SHM: Effects of environmental variability on damage diagnostic techniques, Various Damage detection techniques to deal with environmental variability; Time-frequency analysis: Fourier transforms, short time Fourier transforms, wavelets, Hilbert Huang Transform (HHT), damage detection using HHT; Operational modal analysis: Necessity of OMA, OMA using time and frequency domain, concept NEXT, OMA using HHT, BSS algorithms; Model updating: Direct methods ,frequency response methods, iterative methods; Sensor fault detection: Types of faults, methods for sensor fault detection, sensor fault detection scheme using PCA, sensor correction, correction of faulty sensor data, multi level algorithms for sensor fault detection; Optimal sensor placement(OSP) techniques: Importance of OSP, Classification of OSP methods, Various types of OSP methods, sensor set expansion, sensor set truncation, Demonstration though numerical examples; Damage Prognosis: Damage prognosis, Damage-Prognosis Solution Process,Classification of the damage-prognosis problem,Relation between usage monitoring, structural health monitoring, and damage Prognosis, Physics-based modeling Vs Data-based modeling, Elements of Prognosis Technology, Sensing and Data Acquisition Strategies for Damage Prognosis, Data interrogation.