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Author : Gaetano Restivo
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.:/5 (318 download)
Download or read book Damage Detection in Aircraft Structures by Multi-sensor Ultrasonic Inspection written by Gaetano Restivo and published by . This book was released on 2004 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Markus G. R. Sause
Publisher : Springer Nature
ISBN 13 : 3030721922
Total Pages : 292 pages
Book Rating : 4.0/5 (37 download)
Download or read book Structural Health Monitoring Damage Detection Systems for Aerospace written by Markus G. R. Sause and published by Springer Nature. This book was released on 2021 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book presents established methods of structural health monitoring (SHM) and discusses their technological merit in the current aerospace environment. While the aerospace industry aims for weight reduction to improve fuel efficiency, reduce environmental impact, and to decrease maintenance time and operating costs, aircraft structures are often designed and built heavier than required in order to accommodate unpredictable failure. A way to overcome this approach is the use of SHM systems to detect the presence of defects. This book covers all major contemporary aerospace-relevant SHM methods, from the basics of each method to the various defect types that SHM is required to detect to discussion of signal processing developments alongside considerations of aerospace safety requirements. It will be of interest to professionals in industry and academic researchers alike, as well as engineering students. This article/publication is based upon work from COST Action CA18203 (ODIN - http://odin-cost.com/), supported by COST (European Cooperation in Science and Technology). COST (European Cooperation in Science and Technology) is a funding agency for research and innovation networks. Our Actions help connect research initiatives across Europe and enable scientists to grow their ideas by sharing them with their peers. This boosts their research, career and innovation.
Author : Zachary Tyler Kral
Publisher :
ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (882 download)
Download or read book Development of a Decentralized Artificial Intelligence System for Damage Detection in Composite Laminates for Aerospace Structures written by Zachary Tyler Kral and published by . This book was released on 2013 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of economic impact that results from downtime, aircraft maintenance is an important issue in the aerospace industry. In-service structures will decay over time. Compared to low-cycle loading structures, aerospace structures experience extreme loading conditions, resulting in rapid crack propagation. The research involved in this dissertation concerns development of the initial stages of structural health monitoring (SHM) system that includes a network of ultrasonic testing sensors with artificial intelligence capable of detecting damage before structure failure. A series of experiments examining the feasibility of ultrasonic sensors to detect the initial onset of damage on a composite laminate, similar in structure to that used in aerospace components, was conducted. An artificial neural network (ANN) with the best accuracy was found to be a hybrid of a self-organizing map (SOM) with a feed-forward hidden and output layer. This was used for the single actuator-to-sensor scans on a composite laminate with simulated damage. It was concluded that a decentralized network of sensors was appropriate for such a system. The small four-sensor system was proven to be capable of predicting the presence of damage within a scanning area on a composite laminate, as well as predict the location once damage was detected. The main experimentation for this dissertation involved four ultrasonic sensors operated in a pitch-catch configuration. Simulated damage, verified through experimentation, was placed at various locations in the scanning area of interest. Signals obtained from the ultrasonic sensors were analyzed by a multi-agent system in which each agent describes an ANN. The system was trained to determine damage size. A second multi-agent system was constructed to determine the location of the detected damage. The architecture was similar to the damage-sizing system. Results demonstrated that with the artificial intelligence post-processing of ultrasonic sensors, 95% confidence can be obtained for detecting and locating damage that is 0.375 in. in diameter, which was verified through a bootstrap method. This dissertation validated the initial stages of constructing such a network of ultrasonic sensors. Future research in this area could involve combining the four-sensor network into a larger network of sensors by means of multi-agent processing (i.e., developing scanning regions). The novel method presented here provides the basis for the development of the SHM system for typical aerospace structures.
Author : Morton Lin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (915 download)
Download or read book Ultrasonic Nondestructive Testing for Early Airframe Damage Detection written by Morton Lin and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An important method being developed to accurately track the actual life consumption of an individual aircraft's structural components is through Structural Health Monitoring (SHM). SHM provides a repeatable process as a guide to ensure the structural integrity of an aircraft in service, significantly mitigating risk and lowering operational costs throughout the life cycle of the aircraft. A critical need for active embedded SHM systems are the sensors and actuators attached to the airframe. Macro-Fiber Composite (MFC) transducers, developed by the NASA Langley Research Center, were utilized in this study to explore SHM techniques and implementation procedures for active structural damage detection. Such imbedded SHM systems will provide enabling technologies to reduce aircraft maintenance costs, improve aircraft availability, and maintain current safety and reliability standards. This study details the many advantages of the MFC transducer over traditional piezoelectric transducers, which include greater performance, flexibility, and durability. A pitch-catch setup was utilized to detect, localize, and characterize damage, using damage detection metrics and methodology developed throughout this thesis. MFC actuators and sensors were then embedded in a complex aerospace structure to transition these SHM techniques and procedures.
Author : Wieslaw Staszewski
Publisher : John Wiley & Sons
ISBN 13 : 9780470843406
Total Pages : 290 pages
Book Rating : 4.8/5 (434 download)
Download or read book Health Monitoring of Aerospace Structures written by Wieslaw Staszewski and published by John Wiley & Sons. This book was released on 2004-02-13 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing quality research for the reader, this title encompasses all the recent developments in smart sensor technology for health monitoring in aerospace structures, providing a valuable introduction to damage detection techniques. Focussing on engineering applications, all chapters are written by smart structures and materials experts from aerospace manufacturers and research/academic institutions. This key reference: Discusses the most important aspects related to smart technologies for damage detection; this includes not only monitoring techniques but also aspects related to specifications, design parameters, assessment and qualification routes. Presents real case studies and applications; this includes in-flight tests; the work presented goes far beyond academic research applications. Displays a balance between theoretical developments and engineering applications
Author : Tribikram Kundu
Publisher : John Wiley & Sons
ISBN 13 : 1118614895
Total Pages : 322 pages
Book Rating : 4.1/5 (186 download)
Download or read book Advanced Ultrasonic Methods for Material and Structure Inspection written by Tribikram Kundu and published by John Wiley & Sons. This book was released on 2013-03-01 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Otto K. Sensburg
Publisher :
ISBN 13 :
Total Pages : 247 pages
Book Rating : 4.:/5 (643 download)
Download or read book Damage Detection of Aircraft Structures Using Dynamic Analysis and Testing Methods written by Otto K. Sensburg and published by . This book was released on 1993 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alessandro Pegoretti
Publisher : SAE International
ISBN 13 : 0768093031
Total Pages : 144 pages
Book Rating : 4.7/5 (68 download)
Download or read book Structural Health Monitoring written by Alessandro Pegoretti and published by SAE International. This book was released on 2018-11-20 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural Health Management (SHM) is a key part of the Integrated Vehicle Health Management (IVHM) approach, whose main aim is to develop an integrated end-to-end system to monitor the overall health of a vehicle. Structural Health Monitoring: Current State and Future Trends, edited by Professor Alessandro Pegoretti, a scholar from the University of Trento in Italy, introduces the reader to recent developments involved in health monitoring of aerospace structures. The chapters, represented by seminal SAE International technical papers, offer an overview of the most recent advances in the sensing techniques for SHM, analysis of SHM data and its applications in aerospace. SHM can allow a continuous in-service inspection of the vehicle, thus reducing the cost associated with manual inspection at predetermined time intervals. The availability of reliable information on the loading conditions and health state of structural components by the implementation of SHM can be beneficial for several reasons, such as: • To prevent catastrophic failure • To reduce the number and the cost of unnecessary inspections • To improve the design of structural parts, with a reduction of the weight and the costs of overdesigned components Structural Health Monitoring: Current State and Future Trends offers a unique perspective on this field.
Author : Tribikram Kundu
Publisher : CRC Press
ISBN 13 : 1466570474
Total Pages : 890 pages
Book Rating : 4.4/5 (665 download)
Download or read book Ultrasonic and Electromagnetic NDE for Structure and Material Characterization written by Tribikram Kundu and published by CRC Press. This book was released on 2016-04-19 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most books on nondestructive evaluation (NDE) focus either on the theoretical background or on advanced applications. Bridging the gap between the two, Ultrasonic and Electromagnetic NDE for Structure and Material Characterization: Engineering and Biomedical Applications brings together the principles, equations, and applications of ultrasonic and
Author : Wieslaw Staszewski
Publisher : John Wiley & Sons
ISBN 13 : 0470092831
Total Pages : 288 pages
Book Rating : 4.4/5 (7 download)
Download or read book Health Monitoring of Aerospace Structures written by Wieslaw Staszewski and published by John Wiley & Sons. This book was released on 2004-04-02 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing quality research for the reader, this title encompasses all the recent developments in smart sensor technology for health monitoring in aerospace structures, providing a valuable introduction to damage detection techniques. Focussing on engineering applications, all chapters are written by smart structures and materials experts from aerospace manufacturers and research/academic institutions. This key reference: Discusses the most important aspects related to smart technologies for damage detection; this includes not only monitoring techniques but also aspects related to specifications, design parameters, assessment and qualification routes. Presents real case studies and applications; this includes in-flight tests; the work presented goes far beyond academic research applications. Displays a balance between theoretical developments and engineering applications
Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (318 download)
Download or read book Practicability Issues of Sensor-Based Damage Detection on Military Platforms written by and published by . This book was released on 2006 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: A broad variety of military platforms such as fighter aircraft are nowadays operated for several decades under sometimes varying missions. Additional requirements resulting from more severe fatigue spectra or extended life for these platforms or improved performance requirements for future platforms may require additional means of ensuring structural integrity. It is then important to gain the maximum usage (fatigue life / load levels) of aircraft components most efficiently still ensuring structural integrity at all times. Conventional structural health monitoring systems are typically based on loads and usage monitoring. Together with modern nondestructive damage detection techniques it is possible to safely operate even aged platforms or enable operation of otherwise impossible designs. This goal is achieved by periodic examinations in order to ensure that a structural item is free of damage. However, the dismantling of structures for the purpose of non destructive testing may be very costly, time intensive and sometimes harmful to the surrounding structure itself (accidental damage, unplanned cut-outs for post-inspection, etc.). Therefore, a practical sensor-based damage detection and monitoring system requires integrated, reliable and affordable sensing systems that are needed to avoid disassembly where economically or technically justified. The practicability aspects associated with the introduction of health monitoring sensors to existing and future military platform structures are related with integration aspects and the advantages/disadvantages of permanent installation on board. As an example, such introduction aspects are applied to the Smart Wide area Imaging Sensor System (SWISS) Technology that serves to detect, localize and size material defects with small, highly integrated, weight and volume saving ultrasonic sensors without need to access the damage susceptible area.
Author : Fuh-Gwo Yuan
Publisher : Woodhead Publishing
ISBN 13 : 0081001584
Total Pages : 516 pages
Book Rating : 4.0/5 (81 download)
Download or read book Structural Health Monitoring (SHM) in Aerospace Structures written by Fuh-Gwo Yuan and published by Woodhead Publishing. This book was released on 2016-03-01 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Author : Great Britain. Civil Aviation Authority. Safety Regulation Group
Publisher :
ISBN 13 : 9780117927285
Total Pages : 104 pages
Book Rating : 4.9/5 (272 download)
Download or read book Reliability of Damage Detection in Advanced Composite Aircraft Structures written by Great Britain. Civil Aviation Authority. Safety Regulation Group and published by . This book was released on 2013-01-30 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon fibre reinforced composite structures are being used for up to 50% of the airframe weight in modern airliner designs, including pressurised fuselage barrels and main wings. Composite materials are susceptible to damage from inadvertent impacts. The damage takes the form of surface dents often associated with subsurface delaminations of a significantly greater area than the visible dent. While staff in the aviation industry are familiar with metallic structures and how they respond to accidental impacts, pilots, maintenance staff and ground crew may be less familiar with the way in which composite materials respond to impacts, making them less able to recognise and thus detect, a damaged composite structure. This study was performed in order to establish the appearance of surface flaws arising from impact to a polymer composite aircraft structure, and then to determine the relation between detection reliability using visual inspection procedures and the size and shape of surface flaws.
Author : Victor Giurgiutiu
Publisher : Academic Press
ISBN 13 : 012410441X
Total Pages : 471 pages
Book Rating : 4.1/5 (241 download)
Download or read book Structural Health Monitoring of Aerospace Composites written by Victor Giurgiutiu and published by Academic Press. This book was released on 2015-09-08 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Author : Daniel Balageas
Publisher : John Wiley & Sons
ISBN 13 : 0470394404
Total Pages : 496 pages
Book Rating : 4.4/5 (73 download)
Download or read book Structural Health Monitoring written by Daniel Balageas and published by John Wiley & Sons. This book was released on 2010-01-05 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is organized around the various sensing techniques used to achieve structural health monitoring. Its main focus is on sensors, signal and data reduction methods and inverse techniques, which enable the identification of the physical parameters, affected by the presence of the damage, on which a diagnostic is established. Structural Health Monitoring is not oriented by the type of applications or linked to special classes of problems, but rather presents broader families of techniques: vibration and modal analysis; optical fibre sensing; acousto-ultrasonics, using piezoelectric transducers; and electric and electromagnetic techniques. Each chapter has been written by specialists in the subject area who possess a broad range of practical experience. The book will be accessible to students and those new to the field, but the exhaustive overview of present research and development, as well as the numerous references provided, also make it required reading for experienced researchers and engineers.
Author : Fu-Kuo Chang
Publisher : DEStech Publications, Inc
ISBN 13 : 1605952753
Total Pages : 1644 pages
Book Rating : 4.6/5 (59 download)
Download or read book Structural Health Monitoring 2015 written by Fu-Kuo Chang and published by DEStech Publications, Inc. This book was released on 2015-10-01 with total page 1644 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the Tenth International Workshop on Structural Health Monitoring, September 1–3, 2015. Selected research on the entire spectrum of structural health techniques and areas of applicationAvailable in print, complete online text download or individual articles. Series book comprising two volumes provides selected international research on the entire spectrum of structural health monitoring techniques used to diagnose and safeguard aircraft, vehicles, buildings, civil infrastructure, ships and railroads, as well as their components such as joints, bondlines, coatings and more. Includes special sections on system design, signal processing, multifunctional materials, sensor distribution, embedded sensors for monitoring composites, reliability and applicability in extreme environments. The extensive contents can be viewed below.
Author :
Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
