Health Monitoring of Structural Materials and Components

The first complete introduction to health monitoring, encapsulating both technical information and practical case studies spanning the breadth of the subject. Written by a highly-respected figure in structural health monitoring, this book provides readers with the technical skills and practical understanding required to solve new problems encountered in the emerging field of health monitoring. The book presents a suite of methods and applications in loads identification (usage monitoring), in-situ damage identification (diagnostics), and damage and performance prediction (prognostics). Concepts in modelling, measurements, and data analysis are applied through real-world case studies to identify loading, assess damage, and predict the performance of structural components, as well as examine engine components, automotive accessories, aircraft parts, spacecraft components, civil structures and defence system components. In particular the book: provides the reader with a fundamental and practical understanding of the material; discusses models demonstrating the physical basis for health monitoring techniques; gives a detailed review of the best practices in dynamic measurements including sensing; presents numerous data analysis techniques using model- and signal-based methods; discusses case studies involving real-world applications of health monitoring; offers end-of-chapter problems to enhance the study of the topic for students and instructors; and includes an accompanying website with MATLAB programs providing hands-on training to readers for writing health monitoring model simulation and data analysis algorithms. Health Monitoring of Structural Materials and Components is an excellent introductory text for newcomers to the subject as well as an excellent study tool for students and lecturers. Practitioners and researchers, those with a greater understanding and application of the technical skills involved, will also find this essential reading as a reference text to address current and future challenges in this field. The wide variety of case studies will appeal to a broad spectrum of engineers in the aerospace, civil, mechanical, machinery and defence communities.

The first complete introduction to health monitoringencapsulating both technical information and practical case studiesspanning the breadth of the subject.Written by a highly-respected figure in structural healthmonitoring, this book provides readers with the technical skillsand practical understanding required to solve new problemsencountered in the emerging field of health monitoring. The bookpresents a suite of methods and applications in loadsidentification (usage monitoring), in-situ damage identification(diagnostics), and damage and performance prediction (prognostics).Concepts in modelling, measurements, and data analysis are appliedthrough real-world case studies to identify loading, assess damageand predict the performance of structural components, as well asexamine engine components, automotive accessories, aircraft partsspacecraft components, civil structures and defence systemcomponents.In particular the book:* provides the reader with a fundamental and practicalunderstanding of the material;* discusses models demonstrating the physical basis for healthmonitoring techniques;* gives a detailed review of the best practices in dynamicmeasurements including sensing;* presents numerous data analysis techniques using model- andsignal-based methods;* discusses case studies involving real-world applications ofhealth monitoring;* offers end-of-chapter problems to enhance the study of thetopic for students and instructors; and* includes an accompanying website with MATLAB programs providinghands-on training to readers for writing health monitoring modelsimulation and data analysis algorithms.Health Monitoring of Structural Materials and Componentsis an excellent introductory text for newcomers to the subject aswell as an excellent study tool for students and lecturers.Practitioners and researchers, those with a greater understandingand application of the technical skills involved, will also findthis essential reading as a reference text to address current andfuture challenges in this field. The wide variety of case studieswill appeal to a broad spectrum of engineers in the aerospacecivil, mechanical, machinery and defence communities.

Preface.Acknowledgments.1 Introduction.1.1 Basics of Health Monitoring.1.2 Commercial Needs for Health Monitoring Technology.1.3 Defense Needs for Health Monitoring Technology.1.4 Technical Approach to Health Monitoring.1.5 Definitions of Common Terminology.1.6 Comparison of Nondestructive Testing (NDT) and HealthMonitoring Techniques.1.7 Potential Impact of Health Monitoring Technologies.1.8 Overview of Technical Areas in Health Monitoring.1.9 Summary.References.Problems.2 Modeling Components.2.1 Modeling Needs.2.2 First-Principle Models.2.3 Data-Driven Models.2.4 Load Models.2.5 Summary.ReferencesProblems.3 Modeling Damage.3.1 Static Damage Models.3.2 Dynamic Models for Damage.3.3 Failure Models.3.4 Performance Models.3.5 Summary.References.Problems.4 Measurements.4.1 Measurement Needs.4.2 Data Environment.4.3 Transducer Attachment Methods.4.4 Transducers.4.5 Data Acquisition.4.6 Summary.References.Problems.5 Data Analysis.5.1 Data Analysis Needs and Framework.5.2 Filter Data.5.3 Estimation of Unmeasured Variables (State Inference).5.4 Temporal Analysis.5.5 Transformation of Data.5.6 Averaging of Data.5.7 Spatial Data Analysis.5.8 Feature Extraction.5.9 Variability Analysis.5.10 Loads Identification.5.11 Damage Identification.5.12 Regression Analysis for Prognosis.5.13 Combining Measurement and Data Analysis.5.14 Summary.References.Problems.6 Case Studies: Loads Identification.6.1 Metallic Thermal Protection System Panel.6.2 Gas Turbine Engine Wire Harness and Connector.6.3 Fuselage Rivet Process Monitoring.6.4 Large Engine Valve Assembly.6.5 Suspension with Loosening Bolt.6.6 Sandwich Panel Undergoing Combined Thermo-AcousticLoading.6.7 Summary.References.Problems.7 Case Studies: Damage Identification.7.1 Vibration-Based Methods.7.2 Wave Propagation-Based Methods.7.3 Damage Identification Under Load.7.4 Summary.References.Problems.8 Case Studies: Damage and Performance Prediction(Prognosis).8.1 S2 Glass Cylinder (Performance Prediction).8.2 Stability Bar Linkage (Damage Growth Modeling).8.3 Summary.References.Problems.Appendix A.Appendix B.Index.