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Structural Health Monitoring Of Aerospace Composites

Author: Victor Giurgiutiu
Publisher: Academic Press
ISBN: 012410441X
Size: 40.47 MB
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

Health Monitoring Of Aerospace Structures

Author: Wieslaw Staszewski
Publisher: John Wiley & Sons
ISBN: 9780470843406
Size: 40.51 MB
Format: PDF, Mobi
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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.

Structural Health Monitoring 2006

Author: Alfredo Güemes
Publisher: DEStech Publications, Inc
ISBN: 9781932078633
Size: 50.78 MB
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These proceedings of the Third European Workshop on Structural Health Monitoring held at the Conference Centre in Granada, Spain, in July of 2006 includes four keynote presentations and 170 technical papers written by an international group of contributors. Papers discuss technology and activities related to damage detection and evaluation in engin

Structural Health Monitoring Technologies And Next Generation Smart Composite Structures

Author: Jayantha Ananda Epaarachchi
Publisher: CRC Press
ISBN: 131535604X
Size: 63.16 MB
Format: PDF, ePub, Docs
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Due to the increased use of composite materials in aerospace, energy, automobile, and civil infrastructure applications, concern over composite material failures has grown, creating a need for smart composite structures that are able to self-diagnose and self-heal. Structural Health Monitoring Technologies and Next-Generation Smart Composite Structures provides valuable insight into cutting-edge advances in SHM, smart materials, and smart structures. Comprised of chapters authored by leading researchers in their respective fields, this edited book showcases exciting developments in general embedded sensor technologies, general sensor technologies, sensor response interrogation and data communication, damage matrix formulation, damage mechanics and analysis, smart materials and structures, and SHM in aerospace applications. Each chapter makes a significant contribution to the prevention of structural failures by describing methods that increase safety and reduce maintenance costs in a variety of SHM applications.

Structural Health Monitoring 2013 A Roadmap To Intelligent Structures

Author: Fu-Kuo Chang
Publisher: DEStech Publications, Inc
ISBN: 1605951153
Size: 69.88 MB
Format: PDF, ePub, Docs
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Original research on SHM sensors, quantification strategies, system integration and control for a wide range of engineered materials New applications in robotics, machinery, as well as military aircraft, railroads, highways, bridges, pipelines, stadiums, tunnels, space exploration and energy production Continuing a critical book series on structural health monitoring (SHM), this two-volume set (with full-text searchable CD-ROM) offers, as its subtitle implies, a guide to greater integration and control of SHM systems. Specifically, the volumes contain new research that will enable readers to more efficiently link sensor detection, diagnostics/quantification, overall system functionality, and automated, e.g., robotic, control, thus further closing the loop from inherent signal-based damage detection to responsive real-time maintenance and repair. SHM performance is demonstrated in monitoring the behavior of composites, metals, concrete, polymers and selected nanomaterials in a wide array of surroundings, including harsh environments, under extreme (e.g., seismic) loading and in space. New information on smart sensors and network optimization is enhanced by novel statistical and model-based methods for signal processing and data quantification. A special feature of the book is its explanation of emerging control technologies. Research in these volumes was initially presented in September 2013 at the 9th International Workshop on Structural Health Monitoring (IWSHM), held at Stanford University and sponsored by the Air Force Office of Scientific Research, the Army Research Laboratory, and the Office of Naval Research.

Lamb Wave Based Structural Health Monitoring In Polymer Composites

Author: Rolf Lammering
Publisher: Springer
ISBN: 3319497154
Size: 20.57 MB
Format: PDF, ePub, Docs
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The book focuses especially on the application of SHM technology to thin walled structural systems made from carbon fiber reinforced plastics. Here, guided elastic waves (Lamb-waves) show an excellent sensitivity to structural damages so that they are in the center of this book. It is divided into 4 sections dealing with analytical, numerical and experimental fundamentals, and subsequently with Lamb-wave propagation in fiber reinforced composites, SHM-systems and signal processing. The book is designed for engineering students as well as for researchers in the field of structural health monitoring and for users of this technology.

Structural Health Monitoring Of Biocomposites Fibre Reinforced Composites And Hybrid Composites

Author: Mohammad Jawaid
Publisher: Woodhead Publishing
ISBN: 9780081022917
Size: 32.88 MB
Format: PDF, ePub
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Structural Health Monitoring of Biocomposites, Fibre-Reinforced Composites and Hybrid Composites provides detailed information on failure analysis, mechanical and physical properties, structural health monitoring, durability and life prediction, modelling of damage processes of natural fiber, synthetic fibers, and natural/natural, and natural/synthetic fiber hybrid composites. It provides a comprehensive review of both established and promising new technologies currently under development in the emerging area of structural health monitoring in aerospace, construction and automotive structures. In addition, it describes SHM methods and sensors related to specific composites and how advantages and limitations of various sensors and methods can help make informed choices. Written by leading experts in the field, and covering composite materials developed from different natural fibers and their hybridization with synthetic fibers, the book's chapters provide cutting-edge, up-to-date research on the characterization, analysis and modelling of composite materials. Contains contributions from leading experts in the field Discusses recent progress on failure analysis, SHM, durability, life prediction and the modelling of damage in natural fiber-based composite materials Covers experimental, analytical and numerical analysis Provides detailed and comprehensive information on mechanical properties, testing methods and modelling techniques

Structural Health Monitoring Of Aircraft Composite Structures Using Ultrasonic Guided Wave Propagation

Author: Mohammad Hossein Sherafat
Size: 28.69 MB
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"Despite enhancements in terms of specific strength and stiffness by using composite in aircraft structures, their susceptibility to hide damage is still a major point of concern. The objective of this work is to investigate guided wave propagation in composite structures to detect delaminations, disbond and impact damage.The majority of the work focuses on assessment of composite joints. Primarily, a simple composite structure configuration was chosen to evaluate the effect of artificial and real damage on guided wave behaviour. The results show that non-mid-plane artificial delamination can accurately represent real impact, particularly barely visible impact damage (BVID). Next, a composite skin-stringer assembly and a composite scarf repair were chosen in order to represent typical aerospace structural joint features. The reflection, transmission and scattering behaviour of the plane guided waves are studied as a function of mode, frequency, excitation angle and the quality of the joint. For the composite skin-stringer, two inspection strategies are applied. From the first strategy, the within-the-bond, it is concluded that the antisymmetric mode (A0) transmission is highly sensitive to the damage for frequencies below 350 kHz, while the symmetric mode (S0) reflection around 200 kHz could be employed for monitoring an echo induced by the disbond. For imaging the disbond based on the scattering of the waves, the S0 mode appears as the best candidate below 350 kHz, by inducing an increase of 60 % of the scattered field in the presence of a disbond. The results from the second strategy, the across-the-bond, indicate that the A0 mode behaves more directionally while S0 is more refracted, specifically at low frequencies. For damage imaging, the S0 mode appears to be sensitive enough to disbonds (an increase of 30 % of the scattered wave) at around 150 kHz. Comparison of the pristine and damaged repair joint indicates reflection at the tip of each layer in the scarf (the reflections from the steps' edges), which can be an indication for evaluation of the quality of the joint. The anti-symmetric mode in the pulse-echo configuration seems to be an efficient mode and strategy for disbond detection in composite repairs. " --

Structural Health Monitoring Shm In Aerospace Structures

Author: Fuh-Gwo Yuan
Publisher: Woodhead Publishing
ISBN: 0081001584
Size: 62.78 MB
Format: PDF
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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

Structural Health Monitoring Of Composite Structures Using Fiber Optic Methods

Author: Ginu Rajan
Publisher: CRC Press
ISBN: 1498733204
Size: 55.81 MB
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This highly comprehensive, introductory book explains the basics of structural health monitoring aspects of composite structures. This book serve as an all-in-one reference book in which the reader can receive a basic understanding of composite materials, manufacturing methods, the latest types of optical fiber sensors used for structural health monitoring of composite structures, and demonstrated applications of the use of fiber sensors in a variety of composite material structures. The content draws upon the authors’ and distinguished contributors’ extensive research/teaching and industrial experience to fully cover the structural health monitoring of composite materials using fiber optic sensing methods.