Compressed Sensing Architectures For Multi Channel Ultrasonic Non Destructive Testing

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Compressed Sensing Architectures for Multi-channel Ultrasonic Non-destructive Testing

Author : Felix Arndt
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Compressed Sensing Architectures for Multi-channel Ultrasonic Non-destructive Testing by : Felix Arndt

Download or read book Compressed Sensing Architectures for Multi-channel Ultrasonic Non-destructive Testing written by Felix Arndt and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Viele Industriezweige haben hohe Qualitätsansprüche an die verwendeten Materialien, was sich in den Anforderungen an die Untersuchungsverfahren dieser niederschlägt. Die Erkennung kleinster Fehler ist essentiell, wobei die Untersuchungsdauer, die Kosten und die Automatisierung der Prüfung an Bedeutung gewinnen. Die Zerstörungsfreie Prüfung (ZfP) bietet die Möglichkeit, das Innere eines Werkstückes zu charakterisieren, ohne es zu permanent zu beeinflussen. Ein kostengünstiges und flexibles bildgebendes Verfahren ist die Ultraschallprüfung. Dabei werden Ultraschallpulse in den Prüfkörper eingebracht, welche an Fehlerstellen wie z.B. Rissen oder Lufteinschlüssen aufgrund von akustischen Impedanzunterschieden zur Ausbildung von Echos führen. Die Echoamplitude hängt von der vom Ultraschallwandler eingestrahlten Energiemenge ab. Große Wandlergruppen (Arrays) bieten die Möglichkeit, mehr Energie in den Prüfling einzubringen. Damit geht die Verbesserung des Signal-Rausch-Verhältnis (SNR) und eine höhere Wahrscheinlichkeit bei der Erkennung kleinster Fehler einher. Zudem ermöglichen Arrays die Strahlfokussierung (beamforming) und die Strahlschwenkung (beam steering). Das Beamforming wird in kommerziellen Ultraschall-Prüfgeräten im digitalen Teil der Signalverarbeitung durchgeführt. Dafür werden schnelle, hochauflösende Analog-Digital-Wandler und eine leistungsfähige Signalverarbeitung benötigt, was zu steigender Hardwarekomplexität führt und die Leistungsfähigkeit der Verfahren einschränkt. Diese Restriktionen können durch Compressed Sensing umgangen werden. CS verfolgt die Idee direkt eine komprimierte Version von Signalen zu messen. Diese Masterarbeit untersucht die Anwendbarkeit von CS in mehrkanaligen Hardware-Architekturen für Ultraschallprüfung-ZfP. Aus Prinzipien und Umsetzungen von CS in der drahtlosen Kommunikation und RADAR wird eine Hardwarearchitektur abgeleitet. Es wird ein Framework in MATLAB implementiert. und Simulationen zur Verifizierung der Funktionsweise sowie zur Analyse der Performance des Konzeptes durchgeführt. Die Simulationen zeigen, dass drei implementierte Arten von Kompressionsmatrizen eine Datenreduktion um Faktor 20 mit nur vernachlässigbaren Einbußen der Rekonstruktionsqualität bei moderaten SNRs erreichen. Abschließend werden mögliche Verbesserungen und die zum Aufbau eines Prototypen notwendigen Schritte diskutiert.

Compressive Sensing Based Non-destructive Testing Using Ultrasonic Arrays

Author : Aras Azimipanah
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Compressive Sensing Based Non-destructive Testing Using Ultrasonic Arrays by : Aras Azimipanah

Download or read book Compressive Sensing Based Non-destructive Testing Using Ultrasonic Arrays written by Aras Azimipanah and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ultrasonic Nondestructive Evaluation Systems

Author : Pietro Burrascano
Publisher : Springer
ISBN 13 : 3319105663
Total Pages : 345 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Ultrasonic Nondestructive Evaluation Systems by : Pietro Burrascano

Download or read book Ultrasonic Nondestructive Evaluation Systems written by Pietro Burrascano and published by Springer. This book was released on 2014-12-04 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with a number of fundamental issues related to the practical implementation of ultrasonic NDT techniques in an industrial environment. The book discusses advanced academic research results and their application to industrial procedures. The text covers the choice and generation of the signals energizing the system to probe position optimization, from quality assessment evaluation to tomographic inversion. With a focus to deepen a number of fundamental aspects involved in the specific objective of designing and developing an ultrasonic imaging system for nondestructive testing, aimed to automatically classify the entire production of an industrial production line, targeted to the field of precision mechanics. The contents of this book is the result of the common effort of six University Research Groups that focused their research activities for two years on this specific objective, working in direct conjunction with primary industrial firms, in a research project funded by the Italian government as a Strategic Research Project.

Compressed Sensing in Information Processing

Author : Gitta Kutyniok
Publisher : Springer Nature
ISBN 13 : 3031097459
Total Pages : 549 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Compressed Sensing in Information Processing by : Gitta Kutyniok

Download or read book Compressed Sensing in Information Processing written by Gitta Kutyniok and published by Springer Nature. This book was released on 2022-10-20 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contributed volume showcases the most significant results obtained from the DFG Priority Program on Compressed Sensing in Information Processing. Topics considered revolve around timely aspects of compressed sensing with a special focus on applications, including compressed sensing-like approaches to deep learning; bilinear compressed sensing - efficiency, structure, and robustness; structured compressive sensing via neural network learning; compressed sensing for massive MIMO; and security of future communication and compressive sensing.

Ultrasonic And Advanced Methods For Nondestructive Testing And Material Characterization

Author : Chi Hau Chen
Publisher : World Scientific
ISBN 13 : 9814476404
Total Pages : 682 pages
Book Rating : 4.8/5 (144 download)

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Book Synopsis Ultrasonic And Advanced Methods For Nondestructive Testing And Material Characterization by : Chi Hau Chen

Download or read book Ultrasonic And Advanced Methods For Nondestructive Testing And Material Characterization written by Chi Hau Chen and published by World Scientific. This book was released on 2007-05-24 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrasonic methods have been very popular in nondestructive testing and characterization of materials. This book deals with both industrial ultrasound and medical ultrasound. The advantages of ultrasound include flexibility, low cost, in-line operation, and providing data in both signal and image formats for further analysis. The book devotes 11 chapters to ultrasonic methods. However, ultrasonic methods can be much less effective with some applications. So the book also has 14 chapters catering to other or advanced methods for nondestructive testing or material characterization. Topics like structural health monitoring, Terahertz methods, X-ray and thermography methods are presented. Besides different sensors for nondestructive testing, the book places much emphasis on signal/image processing and pattern recognition of the signals acquired.

Ultrasonic Non-Destructive Testing Using Digital Pulse Compression

Author : 許文山
Publisher :
ISBN 13 : 9781374733558
Total Pages : pages
Book Rating : 4.7/5 (335 download)

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Book Synopsis Ultrasonic Non-Destructive Testing Using Digital Pulse Compression by : 許文山

Download or read book Ultrasonic Non-Destructive Testing Using Digital Pulse Compression written by 許文山 and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ultrasonic Non-destructive Testing Using Digital Pulse Compression

Author : Man-shan Hui
Publisher :
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.:/5 (52 download)

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Book Synopsis Ultrasonic Non-destructive Testing Using Digital Pulse Compression by : Man-shan Hui

Download or read book Ultrasonic Non-destructive Testing Using Digital Pulse Compression written by Man-shan Hui and published by . This book was released on 1981 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Application of Compressed Sensing to 2-D Ultrasonic Propagation Imaging System Data

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)

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Book Synopsis Application of Compressed Sensing to 2-D Ultrasonic Propagation Imaging System Data by :

Download or read book Application of Compressed Sensing to 2-D Ultrasonic Propagation Imaging System Data written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Ultrasonic Propagation Imaging (UPI) System is a unique, non-contact, laser-based ultrasonic excitation and measurement system developed for structural health monitoring applications. The UPI system imparts laser-induced ultrasonic excitations at user-defined locations on a structure of interest. The response of these excitations is then measured by piezoelectric transducers. By using appropriate data reconstruction techniques, a time-evolving image of the response can be generated. A representative measurement of a plate might contain 800x800 spatial data measurement locations and each measurement location might be sampled at 500 instances in time. The result is a total of 640,000 measurement locations and 320,000,000 unique measurements. This is clearly a very large set of data to collect, store in memory and process. The value of these ultrasonic response images for structural health monitoring applications makes tackling these challenges worthwhile. Recently compressed sensing has presented itself as a candidate solution for directly collecting relevant information from sparse, high-dimensional measurements. The main idea behind compressed sensing is that by directly collecting a relatively small number of coefficients it is possible to reconstruct the original measurement. The coefficients are obtained from linear combinations of (what would have been the original direct) measurements. Often compressed sensing research is simulated by generating compressed coefficients from conventionally collected measurements. The simulation approach is necessary because the direct collection of compressed coefficients often requires compressed sensing analog front-ends that are currently not commercially available. The ability of the UPI system to make measurements at user-defined locations presents a unique capability on which compressed measurement techniques may be directly applied. The application of compressed sensing techniques on this data holds the potential to reduce the number of required measurement locations, reduce the time to make measurements, reduce the memory required to store the measurements, and possibly reduce the computational burden to classify the measurements. This work considers the appropriate selection of the signal dictionary used for signal reconstruction, and performs an evaluation of compressed sensing technique's ability to reconstruct ultrasonic images using fewer measurements than would be needed using traditional Nyquist-limited data collection techniques.

Structural Health Monitoring Damage Detection Systems for Aerospace

Author : Markus G. R. Sause
Publisher : Springer Nature
ISBN 13 : 3030721922
Total Pages : 292 pages
Book Rating : 4.0/5 (37 download)

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Book Synopsis Structural Health Monitoring Damage Detection Systems for Aerospace by : Markus G. R. Sause

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.

Training Guidelines in Non-destructive Testing Techniques

Author : International Atomic Energy Agency
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Training Guidelines in Non-destructive Testing Techniques by : International Atomic Energy Agency

Download or read book Training Guidelines in Non-destructive Testing Techniques written by International Atomic Energy Agency and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Dissertation Abstracts International

Author :
Publisher :
ISBN 13 :
Total Pages : 876 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Dissertation Abstracts International by :

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1997 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sampling Theory

Author : Yonina C. Eldar
Publisher : Cambridge University Press
ISBN 13 : 1107003393
Total Pages : 837 pages
Book Rating : 4.1/5 (7 download)

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Book Synopsis Sampling Theory by : Yonina C. Eldar

Download or read book Sampling Theory written by Yonina C. Eldar and published by Cambridge University Press. This book was released on 2015-04-09 with total page 837 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to sampling for engineers, covering the fundamental mathematical underpinnings together with practical engineering principles and applications.

Emerging Technologies in Non-Destructive Testing VI

Author : Danny Van Hemelrijck
Publisher : CRC Press
ISBN 13 : 1315647540
Total Pages : 592 pages
Book Rating : 4.3/5 (156 download)

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Book Synopsis Emerging Technologies in Non-Destructive Testing VI by : Danny Van Hemelrijck

Download or read book Emerging Technologies in Non-Destructive Testing VI written by Danny Van Hemelrijck and published by CRC Press. This book was released on 2015-11-24 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-Destructive Testing (NDT) is of worldwide significance, and is strongly related to the detection of damage in engineering structures (buildings, bridges, aircrafts, ships, pressure vessels, etc.) using non-invasive techniques (ultrasound, X-rays, Radar, neutrons, thermography, vibrations, acoustic emission, etc.). Emerging Technologies in Non-D

Fundamentals of Ultrasonic Phased Arrays

Author : Lester W. Schmerr Jr.
Publisher : Springer
ISBN 13 : 3319072722
Total Pages : 382 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Fundamentals of Ultrasonic Phased Arrays by : Lester W. Schmerr Jr.

Download or read book Fundamentals of Ultrasonic Phased Arrays written by Lester W. Schmerr Jr. and published by Springer. This book was released on 2014-08-13 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes in detail the physical and mathematical foundations of ultrasonic phased array measurements. The book uses linear systems theory to develop a comprehensive model of the signals and images that can be formed with phased arrays. Engineers working in the field of ultrasonic nondestructive evaluation (NDE) will find in this approach a wealth of information on how to design, optimize and interpret ultrasonic inspections with phased arrays. The fundamentals and models described in the book will also be of significant interest to other fields, including the medical ultrasound and seismology communities. A unique feature of this book is that it presents a unified theory of imaging with phased arrays that shows how common imaging methods such as the synthetic aperture focusing technique (SAFT), the total focusing method (TFM), and the physical optics far field inverse scattering (POFFIS) imaging method are all simplified versions of more fundamental and quantitative imaging approaches, called imaging measurement models. To enhance learning, this book first describes the fundamentals of phased array systems using 2-D models, so that the complex 3-D cases normally found in practice can be more easily understood. In addition to giving a detailed discussion of phased array systems, Fundamentals of Ultrasonic Phased Arrays also provides MATLAB® functions and scripts, allowing the reader to conduct simulations of ultrasonic phased array transducers and phased array systems with the latest modeling technology.

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Wireless Sensor Systems for Extreme Environments

Author : Habib F. Rashvand
Publisher : John Wiley & Sons
ISBN 13 : 1119126460
Total Pages : 501 pages
Book Rating : 4.1/5 (191 download)

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Book Synopsis Wireless Sensor Systems for Extreme Environments by : Habib F. Rashvand

Download or read book Wireless Sensor Systems for Extreme Environments written by Habib F. Rashvand and published by John Wiley & Sons. This book was released on 2017-08-14 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides unique coverage of wireless sensor system applications in space, underwater, underground, and extreme industrial environments in one volume This book covers the challenging aspects of wireless sensor systems and the problems and conditions encountered when applying them in outer space, under the water, below the ground, and in extreme industrial environments. It explores the unique aspects of designs and solutions that address those problems and challenges, and illuminates the connections, similarities, and differences between the challenges and solutions in those various environments. The creation of Wireless Sensor Systems for Extreme Environments is a response to the spread of wireless sensor technology into fields of health, safety, manufacturing, space, environmental, smart cities, advanced robotics, surveillance, and agriculture. It is the first of its kind to present, in a single reference, the unique aspects of wireless sensor system design, development, and deployment in such extreme environments—and to explore the similarities and possible synergies between them. The application of wireless sensor systems in these varied environments has been lagging dramatically behind their application in more conventional environments, making this an especially relevant book for investigators and practitioners in all of these areas. Wireless Sensor Systems for Extreme Environments is presented in five parts that cover: Wireless Sensor Systems for Extreme Environments—Generic Solutions Space WSS Solutions and Applications Underwater and Submerged WSS Solutions Underground and Confined Environments WSS Solutions Industrial and Other WSS Solutions This book is a welcome guide for researchers, post-graduate students, engineers and scientists who design and build operational and environmental control systems, emergency response systems, and situational awareness systems for unconventional environments.

Aeronautical Applications of Non-destructive Testing

Author : Abbas Fahr
Publisher : DEStech Publications, Inc
ISBN 13 : 160595120X
Total Pages : 504 pages
Book Rating : 4.6/5 (59 download)

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Book Synopsis Aeronautical Applications of Non-destructive Testing by : Abbas Fahr

Download or read book Aeronautical Applications of Non-destructive Testing written by Abbas Fahr and published by DEStech Publications, Inc. This book was released on 2013-12-05 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive guide to the basic principles and applications of non-destructive testing methods for aircraft system and components: airframe, propulsion, landing gear and more Provides detailed analysis of the advantages and disadvantages of major NDT methods Important for design, inspection, maintenance, repair, corrosion protection and safety This critical book is among the first to provide a detailed assessment of non-destructive testing methods for the many materials and thousands of parts in aircraft. It describes a wide variety of NDT techniques and explains their application in the evaluation and inspection of aerospace materials and components ranging from the entire airframe to systems and subsystems. At the same time the book offers guidance on the information derived from each NDT method and its relation to aircraft design, repair, maintenance and overall safety. The book covers basic principles, as well as practical details of instrumentation, procedures and operational results with a full discussion of each method's capabilities and limitations as these pertain to aircraft inspection and different types of materials, e.g., composites and metal alloys. Technologies covered include: optical and enhanced optical methods; liquid penetrant, replication and magnetic particle inspection; electromagnetic and eddy current approaches; acoustics and ultrasonic techniques; infrared thermal imaging; and radiographic methods. A final section is devoted to NDT reliability and ways the probability of detection can be measured to establish inspection intervals.