Nondestructive Evaluation Using A Reduced Order Computational Methodology
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Nondestructive Evaluation Using A Reduced Order Computational Methodology
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Author : Michele L. Joyner
language : en
Publisher:
Release Date : 2000
Nondestructive Evaluation Using A Reduced Order Computational Methodology written by Michele L. Joyner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
This paper uses eddy current based techniques and reduced order modeling to explore the feasibility of detecting a subsurface damage in structures such as air foils and pipelines. To identify the geometry of a damage, an optimization algorithm is employed which requires solving the forward problem numerous times. To implement these methods in a practical setting, the forward algorithm must be solved with extremely fast and accurate solution methods. Therefore, our computational methods are based on the reduced order Karhunen-Loeve or Proper Orthogonal Decomposition (POD) techniques. For proof-of-concept, we implement the methodology on a 2-D problem and find the methods to be efficient and robust even with data containing 10% relative noise. Furthermore, the methods are fast; our findings suggest we can reduce the computational time on average by a factor of 3000.
Nondestructive Evaluation Using Reduced Order Computational Methodology
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Author :
language : en
Publisher:
Release Date : 2000
Nondestructive Evaluation Using Reduced Order Computational Methodology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Computer-aided engineering categories.
An Application Of A Reduced Order Computational Methodology For Eddy Current Based Nondestructive Evaluation Techniques
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Author :
language : en
Publisher:
Release Date : 2001
An Application Of A Reduced Order Computational Methodology For Eddy Current Based Nondestructive Evaluation Techniques written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
In the field of nondestructive evaluation, new and improved techniques are constantly being sought to facilitate the detection of hidden corrosion and flaws in structures such as airplanes and pipelines. In this dissertation, we explore the feasibility of detecting such damages by application of an eddy current based technique and reduced order modeling. We begin by developing a model for a specific eddy current method in which we make some simplifying assumptions reducing the three-dimensional problem to a two-dimensional problem. (We do this for proof-of-concept.) Theoretical results are then presented which establish the existence and uniqueness of solutions as well as continuous dependence of the solution on the parameters which represent the damage. We further discuss theoretical issues concerning the least squares parameter estimation problem used in identifying the geometry of the damage. To solve the identification problem, an optimization algorithm is employed which requires solving the forward problem numerous times. To implement these methods in a practical setting, the forward algorithm must be solved with extremely fast and accurate solution methods. Therefore in constructing these computational methods, we employ reduced order Proper Orthogonal Decomposition (POD) techniques which allows one to create a set of basis elements spanning a data set consisting of either numerical simulations or experimental data. We investigate two different approaches in forming the POD approximation, a POD/Galerkin technique and a POD/Interpolation technique. We examine the error in the approximation using one approach versus the other as well as present results of the parameter estimation problem for both techniques. Finally, results of the parameter estimation problem are given using both simulated data with relative noise added as well as experimental data obtained using a giant magnetoresistive (GMR) sensor. The experimental results are based on successfully using act.
An Application Of A Reduced Order Computational Methodology For Eddy Current Based Nondestructive Evaluation Techniques
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Author : Michele Lynn Joyner
language : en
Publisher:
Release Date : 2001
An Application Of A Reduced Order Computational Methodology For Eddy Current Based Nondestructive Evaluation Techniques written by Michele Lynn Joyner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Keywords: Reduced order proper orthogonal decomposition method, Nondestructive evaluation, Inverse problems.
Electromagnetic Nondestructive Evaluation Xii
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Author : International Workshop on Electromagnetic Nondestructive Evaluation
language : en
Publisher: IOS Press
Release Date : 2009-07-20
Electromagnetic Nondestructive Evaluation Xii written by International Workshop on Electromagnetic Nondestructive Evaluation and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-07-20 with Science categories.
The 13th International Workshop on Electromagnetic Nondestructive Evaluation (ENDE) was held at the Seoul Education and Culture Center, Korea in June 2008. Electromagnetic Nondestructive Evaluation (XII) contains the proceedings of this workshop. 51 research papers present the latest research in topics ranging from ENDE in nuclear power plants, eddy current testing, modeling, material characterization, to inverse problem and imaging and the application of electromagnetic nondestructive techniques.
Electromagnetic Nondestructive Evaluation Vi
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Author : Fumio Kojima
language : en
Publisher: IOS Press
Release Date : 2002
Electromagnetic Nondestructive Evaluation Vi written by Fumio Kojima and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Science categories.
This work is a collection of papers on electromagnetic nondestructive evaluation. It discusses developments in the growing field of electromagnetic nondestructive evaluation methods. Topics include evaluation of degradation mechanism in magnetic materials.
Electromagnetic Nondestructive Evaluation V
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Author : J. Pavon
language : en
Publisher: IOS Press
Release Date : 2001
Electromagnetic Nondestructive Evaluation V written by J. Pavon and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Science categories.
A collection of papers on electromagnetic nondestructive evaluation (NDE) techniques. Developments are discussed along with the implications of innovations for future inspection practice. Topics covered include: analytical and numerical modelling of electromagnetic NDE phenomena; solutions to NDE inverse problems; evaluation of material degradation in ferromagnetic structures; advanced sensors; industrial applications of NDE; and benchmark problems and solutions.
Electromagnetic Non Destructive Evaluation Xxi
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Author : D. Lesselier
language : en
Publisher: IOS Press
Release Date : 2018-05-25
Electromagnetic Non Destructive Evaluation Xxi written by D. Lesselier and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-25 with Science categories.
Electromagnetic Nondestructive Evaluation (ENDE) is a technique crucial to a great many engineering activities, as well as to environmental evaluation and protection issues. It is a discipline recognized for its theoretical insight, efficient models and simulations, robust data interpretation, and accurate instrumentation. This book presents contributions from the 22nd ENDE International Workshop, held in Saclay, France, in September 2017. It includes 1 of the 3 keynotes and 34 peer-reviewed and extended versions of the 47 oral contributions delivered during the workshop. Topics covered include static to THz electromagnetic; smart models and high-performance computations; advanced sensors; adaptive databases; model selection and the qualification of uncertainty; multi-sensor data fusion; the monitoring and diagnosis of mechanical structures; and innovative industrial applications. The book will be of interest to all those whose work involves the development or use of electromagnetic non-destructive evaluation.
Computational Electromagnetics And Model Based Inversion
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Author : Harold A Sabbagh
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-22
Computational Electromagnetics And Model Based Inversion written by Harold A Sabbagh and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-22 with Technology & Engineering categories.
This volume will define the direction of eddy-current technology in nondestructive evaluation (NDE) in the twenty-first century. It describes the natural marriage of the computer to eddy-current NDE, and its publication was encouraged by favorable responses from workers in the nuclear-power and aerospace industries. It will be used by advanced students and practitioners in the fields of computational electromagnetics, electromagnetic inverse-scattering theory, nondestructive evaluation, materials evaluation and biomedical imaging, among others, and will be based on our experience in applying the subject of computational electromagnetics to these areas, as manifested by our recent research and publications. Finally, it will be a reference to future monographs on advanced NDE that are being contemplated by our colleagues and others. Its importance lies in the fact that it will be the first book to show that advanced computational methods can be used to solve practical, but difficult, problems in eddy-current NDE. In fact, in many cases these methods are the only things available for solving the problems. The book will cover the topic of computational electromagnetics in eddy-current nondestructive evaluation (NDE) by emphasizing three distinct topics: (a) fundamental mathematical principles of volume-integral equations as a subset of computational electromagnetics, (b) mathematical algorithms applied to signal-processing and inverse scattering problems, and (c) applications of these two topics to problems in which real and model data are used. This will make the book more than an academic exercise; we expect it to be valuable to users of eddy-current NDE technology in industries as varied as nuclear power, aerospace, materials characterization and biomedical imaging. We know of no other book on the market that covers this material in the manner in which we will present it, nor are there any books, to our knowledge, that apply this material to actual test situations that are of importance to the industries cited. It will be the first book to actually define the modern technology of eddy-current NDE, by showing how mathematics and the computer will solve problems more effectively than current analog practice.
Computational Nondestructive Evaluation Handbook
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Author : Sourav Banerjee
language : en
Publisher: CRC Press
Release Date : 2020-06-01
Computational Nondestructive Evaluation Handbook written by Sourav Banerjee and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-01 with Science categories.
Introducing computational wave propagation methods developed over 40 years of research, this comprehensive book offers a computational approach to NDE of isotropic, anisotropic, and functionally graded materials. It discusses recent methods to enable enhanced computational efficiency for anisotropic materials. It offers an overview of the need for and uses of NDE simulation. The content provides a basic understanding of ultrasonic wave propagation through continuum mechanics and detailed discussions on the mathematical techniques of six computational methods to simulate NDE experiments. In this book, the pros and cons of each individual method are discussed and guidelines for selecting specific simulation methods for specific NDE scenarios are offered. Covers ultrasonic CNDE fundamentals to provide understanding of NDE simulation methods Offers a catalog of effective CNDE methods to evaluate and compare Provides exercises on real-life NDE problems with mathematical steps Discusses CNDE for common material types, including isotropic, anisotropic, and functionally graded materials Presents readers with practical knowledge on ultrasonic CNDE methods This work is an invaluable resource for researchers, advanced students, and industry professionals across materials, mechanical, civil, and aerospace engineering, and anyone seeking to enhance their understanding of computational approaches for advanced material evaluation methods.