Structural Health Monitoring with Piezoelectric Wafer Active Sensors

Author: Victor Giurgiutiu
Publisher: Academic Press
ISBN: 0124201024
Format: PDF, Mobi
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Structural Health Monitoring with Piezoelectric Wafer Active Sensors, Second Edition provides an authoritative theoretical and experimental guide to this fast-paced, interdisciplinary area with exciting applications across a range of industries. The book begins with a detailed yet digestible consolidation of the fundamental theory relating to structural health monitoring (SHM). Coverage of fracture and failure basics, relevant piezoelectric material properties, vibration modes in different structures, and different wave types provide all the background needed to understand SHM and apply it to real-world structural challenges. Moving from theory to experimental practice, the book then provides the most comprehensive coverage available on using piezoelectric wafer active sensors (PWAS) to detect and quantify damage in structures. Updates to this edition include circular and straight-crested Lamb waves from first principle, and the interaction between PWAS and Lamb waves in 1-D and 2-D geometries. Effective shear stress is described, and tuning expressions between PWAS and Lamb waves has been extended to cover axisymmetric geometries with a complete Hankel-transform-based derivation. New chapters have been added including hands-on SHM case studies of PWAS stress, strain, vibration, and wave sensing applications, along with new sections covering essential aspects of vibration and wave propagation in axisymmetric geometries. Comprehensive coverage of underlying theory such as piezoelectricity, vibration, and wave propagation alongside experimental techniques Includes step-by-step guidance on the use of piezoelectric wafer active sensors (PWAS) to detect and quantify damage in structures, including clear information on how to interpret sensor signal patterns Updates to this edition include a new chapter on composites and new sections on advances in vibration and wave theory, bringing this established reference in line with the cutting edge in this emerging area

Structural Health Monitoring of Aerospace Composites

Author: Victor Giurgiutiu
Publisher: Academic Press
ISBN: 012410441X
Format: PDF
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Structural Health Monitoring of Aerospace Composite Structures offers a comprehensive review of established and promising technologies under development in the emerging area of structural health monitoring (SHM) of aerospace composite structures. Beginning with a description of the different types of composite damage, which differ fundamentally from the damage states encountered in metallic airframes, the book moves on to describe the SHM methods and sensors currently under consideration before considering application examples related to specific composites, SHM sensors, and detection methods. Expert author Victor Giurgiutiu closes with a valuable discussion of the advantages and limitations of various sensors and methods, helping you to make informed choices in your structure research and development. The first comprehensive review of one of the most ardent research areas in aerospace structures, providing breadth and detail to bring engineers and researchers up to speed on this rapidly developing field Covers the main classes of SHM sensors, including fiber optic sensors, piezoelectric wafer active sensors, electrical properties sensors and conventional resistance strain gauges, and considers their applications and limitation Includes details of active approaches, including acousto-ultrasonics, vibration, frequency transfer function, guided-wave tomography, phased arrays, and electrochemical impedance spectroscopy (ECIS), among other emerging methods

Micromechatronics

Author: Victor Giurgiutiu
Publisher: CRC Press
ISBN: 1439883106
Format: PDF, Kindle
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Focusing on recent developments in engineering science, enabling hardware, advanced technologies, and software, Micromechatronics: Modeling, Analysis, and Design with MATLAB®, Second Edition provides clear, comprehensive coverage of mechatronic and electromechanical systems. It applies cornerstone fundamentals to the design of electromechanical systems, covers emerging software and hardware, introduces the rigorous theory, examines the design of high-performance systems, and helps develop problem-solving skills. Along with more streamlined material, this edition adds many new sections to existing chapters. New to the Second Edition Updated and extended worked examples along with the associated MATLAB® codes Additional problems and exercises at the end of many chapters New sections on MATLAB New case studies The book explores ways to improve and optimize a broad spectrum of electromechanical systems widely used in industrial, transportation, and power systems. It examines the design and analysis of high-performance mechatronic systems, energy systems, efficient energy conversion, power electronics, controls, induced-strain devices, active sensors, microcontrollers, and motion devices. The text also enables a deep understanding of the multidisciplinary underpinnings of engineering. It can be used for courses in mechatronics, power systems, energy systems, active materials and smart structures, solid-state actuation, structural health monitoring, and applied microcontroller engineering.

Advanced Ultrasonic Methods for Material and Structure Inspection

Author: Tribikram Kundu
Publisher: John Wiley & Sons
ISBN: 1118614895
Format: PDF, Kindle
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Ultrasonic signals are increasingly being used for predicting material behavior, both in an engineering context (detecting anomalies in a variety of structures) and a biological context (examining human bones, body parts and unborn fetuses). Featuring contributions from authors who are specialists in their subject area, this book presents new developments in ultrasonic research in both these areas, including ultrasonic NDE and other areas which go beyond traditional imaging techniques of internal defects. As such, both those in the biological and physical science communities will find this an informative and stimulating read.

Structural Health Monitoring SHM in Aerospace Structures

Author: Fuh-Gwo Yuan
Publisher: Woodhead Publishing
ISBN: 0081001584
Format: PDF, Docs
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Structural Health Monitoring (SHM) in Aerospace Structures provides readers with the spectacular progress that has taken place over the last twenty years with respect to the area of Structural Health Monitoring (SHM). The widespread adoption of SHM could both significantly improve safety and reduce maintenance and repair expenses that are estimated to be about a quarter of an aircraft fleet’s operating costs. The SHM field encompasses transdisciplinary areas, including smart materials, sensors and actuators, damage diagnosis and prognosis, signal and image processing algorithms, wireless intelligent sensing, data fusion, and energy harvesting. This book focuses on how SHM techniques are applied to aircraft structures with particular emphasis on composite materials, and is divided into four main parts. Part One provides an overview of SHM technologies for damage detection, diagnosis, and prognosis in aerospace structures. Part Two moves on to analyze smart materials for SHM in aerospace structures, such as piezoelectric materials, optical fibers, and flexoelectricity. In addition, this also includes two vibration-based energy harvesting techniques for powering wireless sensors based on piezoelectric electromechanical coupling and diamagnetic levitation. Part Three explores innovative SHM technologies for damage diagnosis in aerospace structures. Chapters within this section include sparse array imaging techniques and phase array techniques for damage detection. The final section of the volume details innovative SHM technologies for damage prognosis in aerospace structures. This book serves as a key reference for researchers working within this industry, academic, and government research agencies developing new systems for the SHM of aerospace structures and materials scientists. Provides key information on the potential of SHM in reducing maintenance and repair costs Analyzes current SHM technologies and sensing systems, highlighting the innovation in each area Encompasses chapters on smart materials such as electroactive polymers and optical fibers

Lamb Waves for Structural Health Monitoring in Viscoelastic Composite Materials

Author: Mircea Calomfirescu
Publisher: Logos Verlag Berlin GmbH
ISBN: 3832519467
Format: PDF, Kindle
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Strucural Health Monitoring (SHM) is a novel philosophy for an autonomous, built-in nondestructive evalution of structural "health" on demand to reduce life-cycle costs, increase safety and reduce structural weight. This dissertation investigates ultrasonic guided waves, particulary Lamb waves, and their propagation properties as a method to perform Health Monitoring of viscoelastic composite structures.

Health Monitoring of Aerospace Structures

Author: Wieslaw Staszewski
Publisher: John Wiley & Sons
ISBN: 9780470843406
Format: PDF
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Aerospace structures are currently inspected using traditionalnon-destructive techniques. However, in recent years theapplication of a range of different technologies and sensingtechniques have advanced damage detection in metallic and compositematerials. New developments are capable of allowing continuousmonitoring as well as integrated and on-line damage detectionsystems for aircraft maintenance. These technologies are attractiveto manufacturers and operators of civil and military aircraft fortheir reduced life cycle costs, reduced inspection/maintenanceeffort, improved high rate operator availability, extended life ofstructures and improved safety. These factors all lead to moreefficient aircraft. Written by industrial and academic experts in the field, thisbook brings together recent developments in sensor technologies,damage detection techniques and signal processing procedures forhealth and usage monitoring of aerospace structures. Health Monitoring of Aerospace Structure: Is the first book fully dedicated to health monitoring ofaerospace structures usi ng recent advancements in smart sensortechnologies and signal processing. Discusses how new technologies need to be developed forefficient and reliable damage monitoring systems in aircraft. Demonstrates the feasibility of smart technologies for healthand usage monitoring of aerospace structures. Covers numerous aspects related to end-user requirements,specifications and design parameters. Presents real case studies and applications including in-flighttests. A truly multidisciplinary book, Health Monitoring ofAerospace Structures is essential reading for academic andindustrial researchers, post-graduate students, aircraft designers,manufacturers, end-users and maintenance providers. This book willalso appeal to many working on structural health monitoring andsmart structures in other fields such as civil engineering andground and sea transportation.

Nondestructive Testing of Materials and Structures

Author: Oral Büyüköztürk
Publisher: Springer Science & Business Media
ISBN: 9400707231
Format: PDF, ePub, Mobi
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Condition assessment and characterization of materials and structures by means of nondestructive testing (NDT) methods is a priority need around the world to meet the challenges associated with the durability, maintenance, rehabilitation, retrofitting, renewal and health monitoring of new and existing infrastructures including historic monuments. Numerous NDT methods that make use of certain components of the electromagnetic and acoustic spectrum are currently in use to this effect with various levels of success and there is an intensive worldwide research effort aimed at improving the existing methods and developing new ones. The knowledge and information compiled in this book captures the current state of the art in NDT methods and their application to civil and other engineering materials and structures. Critical reviews and advanced interdisciplinary discussions by world-renowned researchers point to the capabilities and limitations of the currently used NDT methods and shed light on current and future research directions to overcome the challenges in their development and practical use. In this respect, the contents of this book will equally benefit practicing engineers and researchers who take part in characterization, assessment and health monitoring of materials and structures.

Identification of Damage Using Lamb Waves

Author: Zhongqing Su
Publisher: Springer Science & Business Media
ISBN: 1848827849
Format: PDF
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Lamb waves are guided waves that propagate in thin plate or shell structures. There has been a clear increase of interest in using Lamb waves for identifying structural damage, entailing intensive research and development in this field over the past two decades. Now on the verge of maturity for diverse engineering applications, this emerging technique serves as an encouraging candidate for facilitating continuous and automated surveillance of the integrity of engineering structures in a cost-effective manner. In comparison with conventional nondestructive evaluation techniques such as ultrasonic scanning and radiography which have been well developed over half a century, damage identification using Lamb waves is in a stage of burgeoning development, presenting a number of technical challenges in application that need to be addressed and circumvented. It is these two aspects that have encouraged us to write this book, with the intention of consolidating the knowledge and know-how in the field of Lamb-wave-based damage identification, and of promoting widespread attention to mature application of this technique in the practical engineering sphere. This book provides a comprehensive description of key facets of damage identification technique using Lamb waves, based on the authors’ knowledge, comprehension and experience, ranging from fundamental theory through case studies to engineering applications.