Guided Waves in Structures for SHM
|
|
- Amber Barker
- 5 years ago
- Views:
Transcription
1 229 x mm RED BOX RULES ARE FOR PROOF STAGE ONLY. DE:ETE BEFORE FINAL PRINTING. Ostachowicz Guided Waves in Structures for SHM The Time-Domain Spectral Element Method Wieslaw Ostachowicz Pawel Kudela Marek Krawczuk Arkadiusz Zak Kudela Krawczuk Zak Polish Academy of Sciences Guided Waves in Structures for SHM reports on the simulation, analysis and experimental investigation related propagation of elastic waves in isotropic or laminated structures. The full spectrum of theoretical and practical issues associated with propagation of elastic waves is presented and discussed in this one study. Key features: Covers both numerical and experimental aspects of modeling, analysis and measurement of elastic wave propagation in structural elements formed from isotropic or composite materials Comprehensively discusses the application of the Spectral Finite Element Method for modelling and analysing elastic wave propagation in diverse structural elements Presents results of experimental measurements employing advanced laser technologies, validating the quality and correctness of the developed numerical models Accompanying website ( contains demonstration versions of commercial software developed by the authors for modelling and analyzing elastic wave propagation using the Spectral Finite Element Method Guided Waves in Structures for SHM provides a state of the art resource for researchers and graduate students in structural health monitoring, signal processing and structural dynamics. This book should also provide a useful reference for practising engineers within structural health monitoring and non-destructive testing. Guided Waves in Structures for SHM Understanding and analysing the complex phenomena related to elastic wave propagation has been the subject of intense research for many years and has enabled application in numerous fields of technology, including structural health monitoring (SHM). In the course of the rapid advancement of diagnostic methods utilising elastic wave propagation, it has become clear that existing methods of elastic wave modeling and analysis are not always very useful; developing numerical methods aimed at modelling and analysing these phenomena has become a necessity. Furthermore, any methods developed need to be verified experimentally, which has become achievable with the advancement of measurement methods utilising laser vibrometry. Guided Waves in Structures for SHM The Time-Domain Spectral Element Method Wieslaw Ostachowicz Pawel Kudela Marek Krawczuk Arkadiusz Zak Cover design: Gary Thompson
2
3 Guided Waves in Structures for SHM
4
5 Guided Waves in Structures for SHM The Time-Domain Spectral Element Method Wieslaw Ostachowicz Pawel Kudela Marek Krawczuk Arkadiusz Zak Polish Academy of Sciences, Institute of Fluid Flow Machinery A John Wiley & Sons, Ltd., Publication
6 This edition first published John Wiley & Sons Ltd. Registered Office John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex, PO19 8SQ, United Kingdom For details of our global editorial offices, for customer services and for information about how to apply for permission to reuse the copyright material in this book please see our website at The right of the author to be identified as the author of this work has been asserted in accordance with the Copyright, Designs and Patents Act All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, except as permitted by the UK Copyright, Designs and Patents Act 1988, without the prior permission of the publisher. Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be available in electronic books. Designations used by companies to distinguish their products are often claimed as trademarks. All brand names and product names used in this book are trade names, service marks, trademarks or registered trademarks of their respective owners. The publisher is not associated with any product or vendor mentioned in this book. This publication is designed to provide accurate and authoritative information in regard to the subject matter covered. It is sold on the understanding that the publisher is not engaged in rendering professional services. If professional advice or other expert assistance is required, the services of a competent professional should be sought. MATLAB R is a trademark of The MathWorks, Inc. and is used with permission. The MathWorks does not warrant the accuracy of the text or exercises in this book. This book s use or discussion of MATLAB R software or related products does not constitute endorsement or sponsorship by The MathWorks of a particular pedagogical approach or particular use of the MATLAB R software. Mathematica R is a registered trademark of Wolfram Research, Inc. and is used with permission. Wolfram Research, Inc. does not warrant the accuracy of the text or exercises in this book. The book s use or discussion of Mathematica R or related products does not constitute endorsement or sponsorship by Wolfram Research, Inc. nor is Wolfram Research, Inc. directly involved in this book s development or creation. Library of Congress Cataloging-in-Publication Data: Guided waves in structures for SHM : the time-domain spectral element method / [edited by] Wieslaw Ostachowicz...[et al.]. p. cm. Includes bibliographical references and index. ISBN (hardback) 1. Elastic analysis (Engineering) 2. Elastic wave propagation Mathematical models. 3. Composite materials Analysis. 4. Finite element method. I. Ostachowicz, W. M. (Wieslaw M.) TA653.G dc A catalogue record for this book is available from the British Library. Print ISBN: ; obook ; epdf ; epub ; Mobi Set in 10/12.5pt Palatino by Aptara Inc., New Delhi, India
7 Contents Preface ix 1 Introduction to the Theory of Elastic Waves Elastic Waves Longitudinal Waves (Compressional/Pressure/Primary/P Waves) Shear Waves (Transverse/Secondary/S Waves) Rayleigh Waves Love Waves Lamb Waves Basic Definitions Bulk Waves in Three-Dimensional Media Isotropic Media Christoffel Equations for Anisotropic Media Potential Method Plane Waves Surface Waves Derivation of Lamb Wave Equations Numerical Solution of Rayleigh Lamb Frequency Equations Distribution of Displacements and Stresses for Various Frequencies of Lamb Waves Shear Horizontal Waves Wave Propagation in One-Dimensional Bodies of Circular Cross-Section Equations of Motion Longitudinal Waves 36
8 vi Contents Solution of Pochhammer Frequency Equation Torsional Waves Flexural Waves 43 References 45 2 Spectral Finite Element Method Shape Functions in the Spectral Finite Element Method Lobatto Polynomials Chebyshev Polynomials Laguerre Polynomials Approximating Displacement, Strain and Stress Fields Equations of Motion of a Body Discretised Using Spectral Finite Elements Computing Characteristic Matrices of Spectral Finite Elements Lobatto Quadrature Gauss Quadrature Gauss Laguerre Quadrature Solving Equations of Motion of a Body Discretised Using Spectral Finite Elements Forcing with an Harmonic Signal Forcing with a Periodic Signal Forcing with a Nonperiodic Signal 84 References 92 3 Three-Dimensional Laser Vibrometry Review of Elastic Wave Generation Methods Force Impulse Methods Ultrasonic Methods Methods Based on the Electromagnetic Effect Methods Based on the Piezoelectric Effect Methods Based on the Magnetostrictive Effect Photothermal Methods Review of Elastic Wave Registration Methods Optical Methods Laser Vibrometry Analysis of Methods of Elastic Wave Generation and Registration Exemplary Results of Research on Elastic Wave Propagation Using 3D Laser Scanning Vibrometry 116 References 121
9 Contents vii 4 One-Dimensional Structural Elements Theories of Rods Displacement Fields of Structural Rod Elements Theories of Beams Displacement Fields of Structural Beam Elements Dispersion Curves Certain Numerical Considerations Natural Frequencies Wave Propagation Examples of Numerical Calculations Propagation of Longitudinal Elastic Waves in a Cracked Rod Propagation of Flexural Elastic Waves in a Rod Propagation of Coupled Longitudinal and Flexural Elastic Waves in a Rod 162 References Two-Dimensional Structural Elements Theories of Membranes, Plates and Shells Displacement Fields of Structural Membrane Elements Displacement Fields of Structural Plate Elements Displacement Fields of Structural Shell Elements Certain Numerical Considerations Examples of Numerical Calculations Propagation of Elastic Waves in an Angle Bar Propagation of Elastic Waves in a Half-Pipe Aluminium Shell Propagation of Elastic Waves in an Aluminium Plate 195 References Three-Dimensional Structural Elements Solid Spectral Elements Displacement Fields of Solid Structural Elements Six-Mode Theory Nine-Mode Theory Certain Numerical Considerations Modelling Electromechanical Coupling Assumptions Linear Constitutive Equations Basic Equations of Motion 214
10 viii Contents Static Condensation Inducing Waves Recording Waves Electrical Boundary Conditions Examples of Numerical Calculations Propagation of Elastic Waves in a Half-Pipe Aluminium Shell Propagation of Elastic Waves in an Isotropic Plate Experimental Verification Modelling the Bonding Layer 227 References Detection, Localisation and Identification of Damage by Elastic Wave Propagation Elastic Waves in Structural Health Monitoring Methods of Damage Detection, Localisation and Identification Energy Addition Method Phased Array Method Methods Employing Continuous Registration of Elastic Waves within the Analysed Area Damage Identification Algorithms Examples of Damage Localisation Methods Localisation Algorithms Employing Sensor Networks Algorithms Based on Full Field Measurements of Elastic Wave Propagation 275 References 288 Appendix: EWavePro Software 295 A.1 Introduction 295 A.2 Theoretical Background and Scope of Applicability (Computation Module) 296 A.3 Functional Structure and Software Environment (Pre- and Post-Processors) 298 A.4 Elastic Wave Propagation in a Wing Skin of an Unmanned Plane (UAV) 312 A.5 Elastic Wave Propagation in a Composite Panel 320 References 333 Index 335
11 Preface This book is aimed at professionals whose scientific interests are directly associated with propagation of elastic waves in structural elements. This book may be useful not only for students of technical universities but also for researchers and engineers who solve practical problems involving propagation of elastic waves in structural elements made of isotropic materials or laminated composites. Waves propagating in elastic media have been known for many centuries and have been the subject of scientific research of many scholars. Elastic waves result from stresses acting within the media and are associated with volume (compression and tension) and shape (shear) deformations. Better recognition and understanding of the complex phenomena behind the propagation of elastic waves in structural elements have promoted various novel and practical applications in many fields of technology. One such field is diagnostics of structural elements, where the use of elastic waves increases rapidly each year. Local methods employing elastic waves have been employed successfully for many years, but attempts to apply elastic waves in a global sense for diagnosing structural elements are still at an early stage of development. The measure of success in these attempts comes from various achievements made in parallel in several different fields. The first of them is the development of numerical simulation methods and tools aimed at modelling and analysing the phenomena associated with propagation of elastic waves in structural elements. The second, independent, one is the development of appropriate experimental methods and techniques allowing verification and validation results of numerical simulations. Recently these goals have become achievable in practice thanks to employing the most advanced measuring techniques based on three-dimensional (3D) laser scanning vibrometry.
12 x Preface This book is intended to report on the challenges associated with numerical simulation methods, analyses and experimental investigations related to the propagation of elastic waves in structural elements made of isotropic materials or composite laminates. For the first time the full spectrum of theoretical and practical issues associated with the propagation of elastic waves are presented and discussed in one study. The first part of the book, devoted to various modelling and analysis issues associated with propagation of elastic waves, is focused on the Spectral Finite Element Method, which in the authors opinion is the most suitable modelling technique out of a variety of numerical methods used nowadays to solve wave propagation-related problems. This part of the book gives a broad overview of the existing state of the art and knowledge concerning modelling of elastic wave propagation in structural elements, while emphasising the problems associated with developing efficient numerical methods and tools and verifying them. Original solutions developed by the authors, suitable for constructing appropriate numerical models for simulating propagation of elastic waves in 1D, 2D and 3D structural elements made of isotropic and laminated composites are presented and discussed. Based on the developed spectral finite elements, a range of numerical tests has been carried out in order to verify the accuracy of the models, beginning from wave propagation in simple rods, beams, membranes and plates, and ending with shells or 3D structures. The second part of the book, devoted to experimental measurements, presents the application of 3D laser scanning vibrometry for measuring, investigating and visualising the propagation of elastic waves in real-life structural elements. This part of the book naturally complements the theoretical and numerical investigations of the earlier part. Numerous scenarios and results of experimental measurements carried out on 1D, 2D and 3D structures are presented and discussed. The last part of the book is concerned with various practical applications associated with wave propagation phenomena in structural elements. Problems of damage detection and location are discussed and investigated here. These problems are a part of a wide multidisciplinary research subject known as Structural Health Monitoring. Several damage detection methods developed or/and implemented by the authors and their practical applications in the context of Structural Health Monitoring are described in great detail, based on the results of either numerical or experimental investigations. The results of experimental studies included in this book make use of excitation and registration of elastic waves within structural elements using
13 Preface xi piezoelectric transducers. Additionally, and in parallel, independent registration of propagating elastic waves employs advanced 3D laser scanning vibrometry. These two techniques have been applied and investigated in order to qualitatively and quantitatively characterise the wave propagation phenomena. The authors would like to underline the unique character of this book resulting from its complex and multidisciplinary character. Various acclaimed books dedicated to wave propagation phenomena in elastic media are usually theoretical in nature, while the question of appropriate verification of the developed numerical methods is addressed in a very limited manner. The authors of the studies mentioned often use analytical models of the wave propagation phenomena and/or apply different numerical methods based on either the finite element method or spectral methods in the frequency domain. The intention of the authors of this book is to present for the first time in one place new models of spectral finite elements defined in the time domain developed to facilitate analysis of propagation of elastic waves in structural elements. Originality of the material presented in this book comes from the attempt to connect together the results of both numerical and experimental investigations, as well as to indicate their practical implications. Until now, the original numerical models discussed in the book as well as the results of experimental studies using 3D laser scanning vibrometry have had no equivalents in published books dedicated to this field. Therefore the level of scientific research of this book, in the opinion of the authors, closely follows the latest trends in this area. It is worth noting that this book is accompanied by a demonstration version of software employing methods of analysing elastic wave propagation in structural elements using spectral finite elements. It should be emphasised that this software has been developed by the authors of this book. Guided Waves in Structures for SHM: The Time-Domain Spectral Element Method is accompanied by a website ( The website contains and describes the EWavePro (Elastic Wave Propagation) software, which can be used for analysing phenomena of propagation of longitudinal, shear and flexural waves in two and three dimensional thin walled structures composed of isotropic materials or composite laminates. The abbreviation EWavePro is used here to distinguish the software developed by the authors. The software is developed in order to facilitate better understanding of elastic wave propagation phenomena and to be used as a tool in designing structural health monitoring systems based on changes in the elastic wave propagation patterns.
14 xii Preface The authors want to thank their colleagues from the Department of Mechanics of Intelligent Structures: Dr P. Malinowski, Dr M. Radzienski and Dr T. Wandowski for assistance with writing Chapters 3 and 7, as well as Dr L. Murawski for involvement in writing the Appendix. Their efforts contributed to the development of the mentioned parts of this book cannot be overstated.
15 1 Introduction to the Theory of Elastic Waves 1.1 Elastic waves Elastic waves are mechanical waves propagating in an elastic medium as an effect of forces associated with volume deformation (compression and extension) and shape deformation (shear) of medium elements. External bodies causing these deformations are called wave sources. Elastic wave propagation involves exciting the movement of medium particles increasingly distant from the wave source. The main factor differentiating elastic waves from any other ordered motion of medium particles is that for small disturbances (linear approximation) elastic wave propagation does not result in matter transport. Depending on restrictions imposed on the elastic medium, wave propagation may vary in character. Bulk waves propagate in infinite media. Within the class of bulk waves one can distinguish longitudinal waves (compressional waves) and shear waves. A three-dimensional medium bounded by one surface allows for propagation of surface waves (Rayleigh waves and Love waves). Propagation of bulk waves and surface waves is used for describing seismic wave phenomena. Bounding the elastic medium with two equidistant surfaces causes compressional waves and shear waves to interact, which results in the generation of Lamb waves. One can say that a free boundary restricting an elastic body guides and drives waves; therefore the term Guided Waves in Structures for SHM: The Time-Domain Spectral Element Method, First Edition. Wieslaw Ostachowicz, Pawel Kudela, Marek Krawczuk and Arkadiusz Zak. C 2012 John Wiley & Sons, Ltd. Published 2012 by John Wiley & Sons, Ltd.
Pulse-Width Modulated DC-DC Power Converters Second Edition
Pulse-Width Modulated DC-DC Power Converters Second Edition Marian K. Kazimierczuk Pulse-Width Modulated DC DC Power Converters Pulse-Width Modulated DC DC Power Converters Second Edition MARIAN K. KAZIMIERCZUK
More informationRF AND MICROWAVE ENGINEERING
RF AND MICROWAVE ENGINEERING RF AND MICROWAVE ENGINEERING FUNDAMENTALS OF WIRELESS COMMUNICATIONS Frank Gustrau Dortmund University of Applied Sciences and Arts, Germany A John Wiley & Sons, Ltd., Publication
More informationPREDICTIVE CONTROL OF POWER CONVERTERS AND ELECTRICAL DRIVES
PREDICTIVE CONTROL OF POWER CONVERTERS AND ELECTRICAL DRIVES PREDICTIVE CONTROL OF POWER CONVERTERS AND ELECTRICAL DRIVES Jose Rodriguez and Patricio Cortes Universidad Tecnica Federico Santa Maria, Valparaiso,
More informationRFID HANDBOOK THIRD EDITION
RFID HANDBOOK THIRD EDITION RFID HANDBOOK FUNDAMENTALS AND APPLICATIONS IN CONTACTLESS SMART CARDS, RADIO FREQUENCY IDENTIFICATION AND NEAR-FIELD COMMUNICATION, THIRD EDITION Klaus Finkenzeller Giesecke
More informationCELLULAR TECHNOLOGIES FOR EMERGING MARKETS
CELLULAR TECHNOLOGIES FOR EMERGING MARKETS 2G, 3G AND BEYOND Ajay R. Mishra Nokia Siemens Networks A John Wiley and Sons, Ltd., Publication CELLULAR TECHNOLOGIES FOR EMERGING MARKETS CELLULAR TECHNOLOGIES
More informationSINGLE CARRIER FDMA. Hyung G. Myung and David J. Goodman
SINGLE CARRIER FDMA Single Carrier FDMA: A New Air Interface for Long Term Evolution 2008 John Wiley & Sons, Ltd. ISBN: 978-0-470-72449-1 Hyung G. Myung and David J. Goodman Wiley Series on Wireless Communications
More informationActive sensor arrays for damage detection P. H. Malinowski 1,a, T. Wandowski 1,b and W. M. Ostachowicz 1,2,c
Applied Mechanics and Materials Online: 010-06-30 ISSN: 166-748, Vols. 4-5, pp 51-56 doi:10.408/www.scientific.net/amm.4-5.51 010 Trans Tech Publications, Switzerland Active sensor arrays for damage detection
More informationPART XIII Fidelity and Security of Measurement Data
INSTITUTE OF PETROLEUM PETROLEUM MEASUREMENT MANUAL PART XIII Fidelity and Security of Measurement Data Section 3 Electrical and/or Electronic Data Capture Systems for Flow Metering INSTITUTE OF PETROLEUM
More informationFUNDAMENTALS OF SIGNALS AND SYSTEMS
FUNDAMENTALS OF SIGNALS AND SYSTEMS LIMITED WARRANTY AND DISCLAIMER OF LIABILITY THE CD-ROM THAT ACCOMPANIES THE BOOK MAY BE USED ON A SINGLE PC ONLY. THE LICENSE DOES NOT PERMIT THE USE ON A NETWORK (OF
More informationAIRCRAFT CONTROL AND SIMULATION
AIRCRAFT CONTROL AND SIMULATION AIRCRAFT CONTROL AND SIMULATION Third Edition Dynamics, Controls Design, and Autonomous Systems BRIAN L. STEVENS FRANK L. LEWIS ERIC N. JOHNSON Cover image: Space Shuttle
More informationPenn State University ESM Ultrasonics R&D Laboratory Joseph L. Rose Research Activities
Penn State University ESM Ultrasonics R&D Laboratory Joseph L. Rose Research Activities Crack Detection in Green Compacts The Center for Innovative Sintered Products Identifying cracked green parts before
More informationVibration of Mechanical Systems
Vibration of Mechanical Systems This is a textbook for a first course in mechanical vibrations. There are many books in this area that try to include everything, thus they have become exhaustive compendiums
More information60 GHz TECHNOLOGY FOR GBPS WLAN AND WPAN
60 GHz TECHNOLOGY FOR GBPS WLAN AND WPAN FROM THEORY TO PRACTICE Su-Khiong (SK) Yong Marvell Semiconductor, USA Pengfei Xia Broadcom Corporation, USA Alberto Valdes-Garcia IBM, USA A John Wiley and Sons,
More informationProfessor Emeritus, University of Tokyo, Tokyo, Japan Phone: ;
17th World Conference on Nondestructive Testing, 25-28 Oct 2008, Shanghai, China New Ultrasonic Guided Wave Testing using Remote Excitation of Trapped Energy Mode Morio ONOE 1, Kenji OKA 2 and Takanobu
More informationProject Management in Construction
Project Management in Construction Project Management in Construction Sixth Edition Anthony Walker BBS, MSc, PhD, FRICS Emeritus Professor of Real Estate and Construction University of Hong Kong This
More informationExperimental and theoretical investigation of edge waves propagation and scattering in a thick plate with surface-breaking crack-like defect
Experimental and theoretical investigation of edge waves propagation and scattering in a thick plate with surface-breaking crack-like defect Mikhail V Golub 1, Artem A Eremin 1,2 and Maria V Wilde 3 1
More informationUltra Wideband Signals and Systems in Communication Engineering M. Ghavami King s College London, UK L. B. Michael Japan R. Kohno Yokohama National University, Japan John Wiley & Sons, Ltd Ultra Wideband
More informationInvestigation on Sensor Fault Effects of Piezoelectric Transducers on Wave Propagation and Impedance Measurements
Investigation on Sensor Fault Effects of Piezoelectric Transducers on Wave Propagation and Impedance Measurements Inka Buethe *1 and Claus-Peter Fritzen 1 1 University of Siegen, Institute of Mechanics
More informationMATLAB Guide to Finite Elements
MATLAB Guide to Finite Elements Peter I. Kattan MATLAB Guide to Finite Elements An Interactive Approach Second Edition With 108 Figures and 25 Tables Peter I. Kattan, PhD P.O. BOX 1392 Amman 11118 Jordan
More informationModule 2 WAVE PROPAGATION (Lectures 7 to 9)
Module 2 WAVE PROPAGATION (Lectures 7 to 9) Lecture 9 Topics 2.4 WAVES IN A LAYERED BODY 2.4.1 One-dimensional case: material boundary in an infinite rod 2.4.2 Three dimensional case: inclined waves 2.5
More informationDigital Control System Analysis and Design
GLOBAL EDITION Digital Control System Analysis and Design FOURTH EDITION Charles L. Phillips H. Troy Nagle Aranya Chakrabortty Editorial Director, Engineering and Computer Science: Marcia J. Horton Executive
More informationPRACTICAL RF SYSTEM DESIGN
PRACTICAL RF SYSTEM DESIGN WILLIAM F. EGAN, Ph.D. Lecturer in Electrical Engineering Santa Clara University The Institute of Electrical and Electronics Engineers, Inc., New York A JOHN WILEY & SONS, INC.,
More informationExcitation and reception of pure shear horizontal waves by
Excitation and reception of pure shear horizontal waves by using face-shear d 24 mode piezoelectric wafers Hongchen Miao 1,2, Qiang Huan 1, Faxin Li 1,2,a) 1 LTCS and Department of Mechanics and Engineering
More informationSTP-PT-032 BUCKLING OF CYLINDRICAL, THIN WALL, TRAILER TRUCK TANKS AND ASME SECTION XII
STP-PT-032 BUCKLING OF CYLINDRICAL, THIN WALL, TRAILER TRUCK TANKS AND ASME SECTION XII Date of Issuance: September 1, 2009 This report was prepared as an account of work sponsored by ASME Pressure Technologies
More informationUltrasonic Guided Waves for NDT and SHM
Ultrasonic Guided Waves for NDT and SHM Joseph L. Rose Paul Morrow Professor Engineering Science & Mechanics Department Penn State University Chief Scientist FBS,Inc. CAV Presentation May 4, 2009 The difference
More informationAcoustic Resonance Analysis Using FEM and Laser Scanning For Defect Characterization in In-Process NDT
ECNDT 2006 - We.4.8.1 Acoustic Resonance Analysis Using FEM and Laser Scanning For Defect Characterization in In-Process NDT Ingolf HERTLIN, RTE Akustik + Prüftechnik, Pfinztal, Germany Abstract. This
More informationUltrasonic Guided Wave Applications
Ultrasonic Guided Wave Applications Joseph L. Rose Penn State University April 29-30, 2013 2013 Center for Acoustics and Vibrations meeting What is a Guided Wave? (Guided wave requires boundary for propagation
More informationNonlinear behavior of Reinforced Concrete Infilled Frames using ATENA 2D
Available online at www.ijacskros.com Indian Journal of Advances in Chemical Science S1 (2016) 173-178 Nonlinear behavior of Reinforced Concrete Infilled Frames using ATENA 2D M. D. Raghavendra Prasad,
More informationSHORT-RANGE WIRELESS COMMUNICATIONS EMERGING TECHNOLOGIES AND APPLICATIONS
SHORT-RANGE WIRELESS COMMUNICATIONS EMERGING TECHNOLOGIES AND APPLICATIONS Edited by Rolf Kraemer IHP GmbH, Germany Marcos D. Katz VTT, Finland A John Wiley and Sons, Ltd., Publication SHORT-RANGE WIRELESS
More informationQuantitative Crack Depth Study in Homogeneous Plates Using Simulated Lamb Waves.
More Info at Open Access Database www.ndt.net/?id=18675 Quantitative Crack Depth Study in Homogeneous Plates Using Simulated Lamb Waves. Mohammad. (. SOORGEE, Aghil. YOUSEF)-KOMA Nondestructive Testing
More informationRF AND MICROWAVE ENGINEERING
RF AND MICROWAVE ENGINEERING FUNDAMENTALS OF WIRELESS COMMUNICATIONS Frank Gustrau Dortmund University of Applied Sciences and Arts, Germany WILEY A John Wiley & Sons, Ltd., Publication Preface List of
More informationREFLECTION AND TRANSMISSION OF LAMB WAVES AT DISCONTINUITY IN PLATE Z. Liu NDT Systems & Services AG, Stutensee, Germany
REFLECTION AND TRANSMISSION OF LAMB WAVES AT DISCONTINUITY IN PLATE Z. Liu NDT Systems & Services AG, Stutensee, Germany Abstract: Lamb waves can be used for testing thin plate and pipe because they provide
More informationTHE FIELDS OF ELECTRONICS
THE FIELDS OF ELECTRONICS THE FIELDS OF ELECTRONICS Understanding Electronics Using Basic Physics Ralph Morrison A Wiley-Interscience Publication JOHN WILEY & SONS, INC. This book is printed on acid-free
More informationAN EXPERIMENTAL STUDY ON THE SCATTERING OF EDGE- GUIDED WAVES BY A SMALL EDGE CRACK IN AN ISOTROPIC PLATE
8th European Workshop On Structural Health Monitoring (EWSHM 2016), 5-8 July 2016, Spain, Bilbao www.ndt.net/app.ewshm2016 More info about this article: http://www.ndt.net/?id=19985 AN EXPERIMENTAL STUDY
More informationacoustic imaging cameras, microscopes, phased arrays, and holographic systems
acoustic imaging cameras, microscopes, phased arrays, and holographic systems acoustic imaging cameras, microscopes, phased arrays, and holographic systems Edited by Glen Wade University of California
More informationStructural Integrity Monitoring using Guided Ultrasonic Waves
Structural Integrity Monitoring using Guided Ultrasonic Waves Paul Fromme Department of Mechanical Engineering University College London NPL - May 2010 Structural Integrity Monitoring using Guided Ultrasonic
More informationMEASUREMENT OF SURFACE ACOUSTIC WAVE USING AIR COUPLED TRANSDUCER AND LASER DOPPLER VIBROMETER
21 st International Conference on Composite Materials Xi an, 20-25 th August 2017 MEASUREMENT OF SURFACE ACOUSTIC WAVE USING AIR COUPLED TRANSDUCER AND LASER DOPPLER VIBROMETER Weitao Yuan 1, Jinfeng Zhao
More informationCONTENTS. Cambridge University Press Vibration of Mechanical Systems Alok Sinha Table of Contents More information
CONTENTS Preface page xiii 1 Equivalent Single-Degree-of-Freedom System and Free Vibration... 1 1.1 Degrees of Freedom 3 1.2 Elements of a Vibratory System 5 1.2.1 Mass and/or Mass-Moment of Inertia 5
More informationMODELLING AND EXPERIMENTS FOR THE DEVELOPMENT OF A GUIDED WAVE LIQUID LEVEL SENSOR
Proceedings of the National Seminar & Exhibition on Non-Destructive Evaluation NDE 2011, December 8-10, 2011 MODELLING AND EXPERIMENTS FOR THE DEVELOPMENT OF A GUIDED WAVE LIQUID LEVEL SENSOR Subhash N.N
More informationPrinciples of Optics for Engineers
Principles of Optics for Engineers Uniting historically different approaches by presenting optical analyses as solutions of Maxwell s equations, this unique book enables students and practicing engineers
More informationOPTIMAL EXCITATION FREQUENCY FOR DELAMINATION IDENTIFICATION OF LAMINATED BEAMS USING A 0 LAMB MODE
OPTIMAL EXCITATION FREQUENCY FOR DELAMINATION IDENTIFICATION OF LAMINATED BEAMS USING A 0 LAMB MODE N. Hu 1 *, H. Fukunaga 2, Y. Liu 3 and Y. Koshin 2 1 Department of Mechanical Engineering, Chiba University,
More informationPiezoelectric transducer excitation for guided waves propagation on pipeline with flexural wave modes
9 th European Workshop on Structural Health Monitoring July 10-13, 2018, Manchester, United Kingdom Piezoelectric transducer excitation for guided waves propagation on pipeline with flexural wave modes
More informationAPPLICATION OF ULTRASONIC GUIDED WAVES FOR INVESTIGATION OF COMPOSITE CONSTRUCTIONAL COMPONENTS OF TIDAL POWER PLANTS
The 12 th International Conference of the Slovenian Society for Non-Destructive Testing»Application of Contemporary Non-Destructive Testing in Engineering«September 4-6, 2013, Portorož, Slovenia More info
More informationJohn Vance Fouad Zeidan Brian Murphy
machinery vibration and rotordynamics John Vance Fouad Zeidan Brian Murphy MACHINERY VIBRATION AND ROTORDYNAMICS MACHINERY VIBRATION AND ROTORDYNAMICS John Vance, Fouad Zeidan, Brian Murphy JOHN WILEY
More informationULTRASONIC GUIDED WAVE ANNULAR ARRAY TRANSDUCERS FOR STRUCTURAL HEALTH MONITORING
ULTRASONIC GUIDED WAVE ANNULAR ARRAY TRANSDUCERS FOR STRUCTURAL HEALTH MONITORING H. Gao, M. J. Guers, J.L. Rose, G. (Xiaoliang) Zhao 2, and C. Kwan 2 Department of Engineering Science and Mechanics, The
More informationBackgammon. by Chris Bray. FOR DUMmIES. A John Wiley and Sons, Ltd, Publication
Backgammon FOR DUMmIES by Chris Bray A John Wiley and Sons, Ltd, Publication Backgammon For Dummies Published by John Wiley & Sons, Ltd The Atrium Southern Gate Chichester West Sussex PO19 8SQ England
More informationGeneration Laser Scanning Method for Visualizing Ultrasonic Waves Propagating on a 3-D Object
1st International Symposium on Laser Ultrasonics: Science, Technology and Applications July 16-18 2008, Montreal, Canada Generation Laser Scanning Method for Visualizing Ultrasonic Waves Propagating on
More informationACOUSTO-ULTRASONIC EVALUATION OF HYBRID COMPOSITES USING
ACOUSTO-ULTRASONIC EVALUATION OF HYBRID COMPOSITES USING OBLIQUE INCIDENCE WAVES INTRODUCTION Yuyin Ji, Sotirios J. Vahaviolos, Ronnie K. Miller, Physical Acoustics Corporation P.O. Box 3135 Princeton,
More informationINFLUENCE OF PILES ON LOAD- SETTLEMENT BEHAVIOUR OF RAFT FOUNDATION
INFLUENCE OF PILES ON LOAD- SETTLEMENT BEHAVIOUR OF RAFT FOUNDATION BALESHWAR SINGH Department of Civil Engineering Indian Institute of Technology Guwahati Guwahati 78139, India NINGOMBAM THOIBA SINGH
More informationThe Test and Launch Control Technology for Launch Vehicles
The Test and Launch Control Technology for Launch Vehicles Zhengyu Song The Test and Launch Control Technology for Launch Vehicles 123 Zhengyu Song China Academy of Launch Vehicle Technology Beijing China
More informationStructural. engineering. dynamics of earthquake. s. Rajasekaran. W OODHEAD PUBLISHING LIMITED Oxford Cambridge New Delhi
Structural dynamics of earthquake engineering Theory and application using MATHEMATICA and MATLAB s. Rajasekaran ocrc Press Boca Raton Boston New York Washington, DC W OODHEAD PUBLISHING LIMITED Oxford
More informationFundamentals of Global Positioning System Receivers
Fundamentals of Global Positioning System Receivers A Software Approach SECOND EDITION JAMES BAO-YEN TSUI A JOHN WILEY & SONS, INC., PUBLICATION Fundamentals of Global Positioning System Receivers Fundamentals
More informationINTRODUCTION TO MODERN DIGITAL HOLOGRAPHY
INTRODUCTION TO MODERN DIGITAL HOLOGRAPHY With MATLAB Get up to speed with digital holography with this concise and straightforward introduction to modern techniques and conventions. Building up from the
More informationMultiple crack detection of pipes using PZT-based guided waves
Multiple crack detection of pipes using PZT-based guided waves *Shi Yan 1), Ji Qi 2), Nai-Zhi Zhao 3), Yang Cheng 4) and Sheng-Wenjun Qi 5) 1), 2), 3), 4) School of Civil Engineering, Shenyang Jianzhu
More informationQuasi-Rayleigh Waves in Butt-Welded Thick Steel Plate
Quasi-Rayleigh Waves in Butt-Welded Thick Steel Plate Tuncay Kamas a) Victor Giurgiutiu b), Bin Lin c) a) Mechanical Engineering University of South Carolina 3 Main Str. 2928 Columbia SC b) Mechanical
More informationHIGH INTEGRITY DIE CASTING PROCESSES
HIGH INTEGRITY DIE CASTING PROCESSES EDWARD J. VINARCIK JOHN WILEY & SONS, INC. HIGH INTEGRITY DIE CASTING PROCESSES HIGH INTEGRITY DIE CASTING PROCESSES EDWARD J. VINARCIK JOHN WILEY & SONS, INC. This
More informationFailure Analysis of Paints and Coatings. Revised Edition
Failure Analysis of Paints and Coatings Revised Edition Dwight G. Weldon Weldon Laboratories, Inc, Imperial, PA, USA A John Wiley & Sons, Ltd., Publication Failure Analysis of Paints and Coatings Revised
More informationEWGAE 2010 Vienna, 8th to 10th September
EWGAE 2010 Vienna, 8th to 10th September Frequencies and Amplitudes of AE Signals in a Plate as a Function of Source Rise Time M. A. HAMSTAD University of Denver, Department of Mechanical and Materials
More informationBroadband Wireless Communications Business
Broadband Wireless Communications Business Broadband Wireless Communications Business An Introduction to the Costs and Benefits of New Technologies Riaz Esmailzadeh IPMobile Inc., Japan Copyright 2006
More informationLIQUID SLOSHING IN FLEXIBLE CONTAINERS, PART 1: TUNING CONTAINER FLEXIBILITY FOR SLOSHING CONTROL
Fifth International Conference on CFD in the Process Industries CSIRO, Melbourne, Australia 13-15 December 26 LIQUID SLOSHING IN FLEXIBLE CONTAINERS, PART 1: TUNING CONTAINER FLEXIBILITY FOR SLOSHING CONTROL
More informationON THE DEVELOPMENT OF METHODS AND TECHNIQUES FOR AIRCRAFT STRUCTURAL HEALTH MONITORING
26 TH INTERNATIONAL CONGRESS OF THE AERONAUTICAL SCIENCES ON THE DEVELOPMENT OF METHODS AND TECHNIQUES FOR AIRCRAFT STRUCTURAL HEALTH MONITORING B. Rocha*, A. Fonseca**, A. Suleman* *** * IDMEC/IST and
More informationTime Frequency Domain for Segmentation and Classification of Non-stationary Signals
Time Frequency Domain for Segmentation and Classification of Non-stationary Signals FOCUS SERIES Series Editor Francis Castanié Time Frequency Domain for Segmentation and Classification of Non-stationary
More informationThe analysis of microstrip antennas using the FDTD method
Computational Methods and Experimental Measurements XII 611 The analysis of microstrip antennas using the FDTD method M. Wnuk, G. Różański & M. Bugaj Faculty of Electronics, Military University of Technology,
More informationProduct Development Strategy
Product Development Strategy Product Development Strategy Innovation Capacity and Entrepreneurial Firm Performance in High-Tech SMEs Mina Tajvidi Bangor Business School, Bangor University, UK and Azhdar
More informationLamb Wave Ultrasonic Stylus
Lamb Wave Ultrasonic Stylus 0.1 Motivation Stylus as an input tool is used with touchscreen-enabled devices, such as Tablet PCs, to accurately navigate interface elements, send messages, etc. They are,
More informationAN AUTOMATED ALGORITHM FOR SIMULTANEOUSLY DETERMINING ULTRASONIC VELOCITY AND ATTENUATION
MECHANICS. ULTRASONICS AN AUTOMATED ALGORITHM FOR SIMULTANEOUSLY DETERMINING ULTRASONIC VELOCITY AND ATTENUATION P. PETCULESCU, G. PRODAN, R. ZAGAN Ovidius University, Dept. of Physics, 124 Mamaia Ave.,
More informationTHE JOHN DEERE WAY. Performance That Endures. David Magee. John Wiley & Sons, Inc.
THE JOHN DEERE WAY Performance That Endures David Magee John Wiley & Sons, Inc. THE JOHN DEERE WAY THE JOHN DEERE WAY Performance That Endures David Magee John Wiley & Sons, Inc. Copyright 2005 by David
More informationSTRUCTURAL TIMBER DESIGN
STRUCTURAL TIMBER DESIGN to Eurocode 5 2nd Edition Jack Porteous BSc, MSc, DIC, PhD, CEng, MIStructE, FICE Director lack Porteous Consultancy and Abdy Kernlani BSc, MSc, PhD, CEng, FIStructE, FIWSc Professor
More informationISO INTERNATIONAL STANDARD. Non-destructive testing Acoustic emission inspection Secondary calibration of acoustic emission sensors
INTERNATIONAL STANDARD ISO 12714 First edition 1999-07-15 Non-destructive testing Acoustic emission inspection Secondary calibration of acoustic emission sensors Essais non destructifs Contrôle par émission
More informationBasics of Holography
Basics of Holography Basics of Holography is an introduction to the subject written by a leading worker in the field. The first part of the book covers the theory of holographic imaging, the characteristics
More informationADVANCED MODELING IN COMPUTATIONAL ELECTROMAGNETIC COMPATIBILITY
ADVANCED MODELING IN COMPUTATIONAL ELECTROMAGNETIC COMPATIBILITY DRAGAN POLJAK, PhD Department of Electronics University of Split, Croatia BICENTENNIAL 1 8 O 7 WILEY 2 O O 7 ICENTENNIAL WILEY-INTERSCIENCE
More informationControl of Electric Machine Drive Systems. Seung-Ki Sul
Control of Electric Machine Drive Systems Seung-Ki Sul Control of Electric Machine Drive Systems IEEE Press 445 Hoes Lane Piscataway, NJ 08854 IEEE Press Editorial Board Lajos Hanzo, Editor in Chief R.
More informationDry Etching Technology for Semiconductors. Translation supervised by Kazuo Nojiri Translation by Yuki Ikezi
Dry Etching Technology for Semiconductors Translation supervised by Kazuo Nojiri Translation by Yuki Ikezi Kazuo Nojiri Dry Etching Technology for Semiconductors Kazuo Nojiri Lam Research Co., Ltd. Tokyo,
More information1681. Omni-directional damage detection and localization with a cruciform piezoelectric ultrasonic phased array
1681. Omni-directional damage detection and localization with a cruciform piezoelectric ultrasonic phased array Zhiling Wang 1, Shenfang Yuan, Lei Qiu 3, Bin Liu 4 1,, 3, 4 The State Key Laboratory of
More informationBorehole vibration response to hydraulic fracture pressure
Borehole vibration response to hydraulic fracture pressure Andy St-Onge* 1a, David W. Eaton 1b, and Adam Pidlisecky 1c 1 Department of Geoscience, University of Calgary, 2500 University Drive NW Calgary,
More informationPhased Array Antennas
Phased Array Antennas Second Edition R. С HANSEN Consulting Engineer R. C. Hansen, Inc. www.rchansen.com WILEY A JOHN WILEY & SONS, INC., PUBLICATION Contents Preface to the First Edition Preface to the
More informationTHE POWER OF JAPANESE CANDLESTICK CHARTS
THE POWER OF JAPANESE CANDLESTICK CHARTS Founded in 1807, John Wiley & Sons is the oldest independent publishing company in the United States. With offi ces in North America, Europe, Australia and Asia,
More informationCRACK SIZING USING A NEURAL NETWORK CLASSIFIER TRAINED WITH DATA OBTAINED FROM FINI1E ELEMENT MODELS
CRACK SIZING USING A NEURAL NETWORK CLASSIFIER TRAINED WITH DATA OBTAINED FROM FINI1E ELEMENT MODELS Kornelija Zgonc, Jan D. Achenbach and Yung-Chung Lee Center for Quality Engineering and Failure Prevention
More informationPrinciples of Planar Near-Field Antenna Measurements. Stuart Gregson, John McCormick and Clive Parini. The Institution of Engineering and Technology
Principles of Planar Near-Field Antenna Measurements Stuart Gregson, John McCormick and Clive Parini The Institution of Engineering and Technology Contents Preface xi 1 Introduction 1 1.1 The phenomena
More informationApplication of Automation Technology in Fatigue and Fracture Testing and Analysis 6th Volume
McKeighan Braun Helping our world work better www.astm.org ASTM International ISBN: 978-0-8031-7587-7 Stock #: STP1571 Application of Automation Technology in Fatigue and Fracture Testing and Analysis:
More informationFILTRATION HANDBOOK: LIQUIDS
FILTRATION HANDBOOK: LIQUIDS THEODORE H. MELZER MAIK W. JORNITZ PDA Bethesda, MD, USA DHI Publishing, LLC River Grove, IL, USA 10 9 8 7 6 5 4 3 2 1 ISBN: 1-930114-62-1 Copyright 2004 Theodore H. Melzer
More informationTime Reversal FEM Modelling in Thin Aluminium Plates for Defects Detection
ECNDT - Poster 39 Time Reversal FEM Modelling in Thin Aluminium Plates for Defects Detection Yago GÓMEZ-ULLATE, Instituto de Acústica CSIC, Madrid, Spain Francisco MONTERO DE ESPINOSA, Instituto de Acústica
More informationLaser-vibrometric measurement of oscillating piezoelectric actuators and of Lamb waves in CFRP plates for structural health monitoring
Laser-vibrometric measurement of oscillating piezoelectric actuators and of Lamb waves in CFRP plates for structural health monitoring Jürgen Pohl a, Gerhard Mook a, Rolf Lammering b and Sven von Ende
More informationPROCESS ANALYZER SAMPLE-CONDITIONING SYSTEM TECHNOLOGY ROBERT E. SHERMAN
PROCESS ANALYZER SAMPLE-CONDITIONING SYSTEM TECHNOLOGY ROBERT E. SHERMAN A John Wiley & Sons, Inc., Publication This book is printed on acid-free paper. Copyright 2002 by John Wiley and Sons, Inc., New
More informationA NEW APPROACH FOR THE ANALYSIS OF IMPACT-ECHO DATA
A NEW APPROACH FOR THE ANALYSIS OF IMPACT-ECHO DATA John S. Popovics and Joseph L. Rose Department of Engineering Science and Mechanics The Pennsylvania State University University Park, PA 16802 INTRODUCTION
More informationSelective Excitation of Lamb Wave Modes in Thin Aluminium Plates using Bonded Piezoceramics: Fem Modelling and Measurements
ECNDT 6 - Poster 5 Selective Excitation of Lamb Wave Modes in Thin Aluminium Plates using Bonded Piezoceramics: Fem Modelling and Measurements Yago GÓMEZ-ULLATE, Francisco MONTERO DE ESPINOSA, Instituto
More informationINTRODUCTION TO DIGITAL SIGNAL PROCESSING AND FILTER DESIGN
INTRODUCTION TO DIGITAL SIGNAL PROCESSING AND FILTER DESIGN INTRODUCTION TO DIGITAL SIGNAL PROCESSING AND FILTER DESIGN B. A. Shenoi A JOHN WILEY & SONS, INC., PUBLICATION Copyright 2006 by John Wiley
More informationNCW101 AN INTRODUCTION TO NETWORK CENTRIC WARFARE FIRST EDITION
NCW101 AN INTRODUCTION TO NETWORK CENTRIC WARFARE FIRST EDITION Air Power Australia 2008 i National Library of Australia Cataloguing-in-Publication entry Author: Kopp, Carlo, 1958- Title: Edition: ISBN:
More informationThe Development of Laser Ultrasonic Visualization Equipment and its Application in Nondestructive Inspection
17th World Conference on Nondestructive Testing, 25-28 Oct 2008, Shanghai, China The Development of Laser Ultrasonic Visualization Equipment and its Application in Nondestructive Inspection Bo WANG 1,
More informationComputational Principles of Mobile Robotics
Computational Principles of Mobile Robotics Mobile robotics is a multidisciplinary field involving both computer science and engineering. Addressing the design of automated systems, it lies at the intersection
More informationModelling Non-Stationary Time Series
Modelling Non-Stationary Time Series Palgrave Texts in Econometrics Series Editor: Kerry Patterson Titles include: Simon P. Burke and John Hunter MODELLING NON-STATIONARY TIME SERIES Michael P. Clements
More informationGuided wave based material characterisation of thin plates using a very high frequency focused PVDF transducer
Guided wave based material characterisation of thin plates using a very high frequency focused PVDF transducer Anoop U and Krishnan Balasubramanian More info about this article: http://www.ndt.net/?id=22227
More informationINTERNATIONAL STANDARD
INTERNATIONAL STANDARD IEC 62092 First edition 2001-08 Utrasonics Hydrophones Characteristics and calibration in the frequency range from 15 MHz to 40 MHz Ultrasons Hydrophones Caractéristiques et étalonnage
More informationEXPERIMENTAL ANALYSIS OF BOLT LOOSENING DYNAMICS CHARACTERISTIC IN A BEAM BY IMPACT TESTING
EXPERIMENTAL ANALYSIS OF BOLT LOOSENING DYNAMICS CHARACTERISTIC IN A BEAM BY IMPACT TESTING Meifal Rusli, Candra Mardianto and Mulyadi Bur Department of Mechanical Engineering, Faculty of Engineering,
More informationTransformer Engineering
Transformer Engineering Design, Technology, and Diagnostics Second Edition S.V. Kulkarni S.A. Khaparde / 0 \ CRC Press \Cf*' J Taylor & Francis Group ^ч_^^ Boca Raton London NewYork CRC Press is an imprint
More informationAbstract. 1 Introduction. 1.2 Concept. 1.1 Problematic. 1.3 Modelling
Piezo-composite transducer for mode and direction selectivity of Lamb waves Eng. Thomas Porchez, Cedrat Technologies, Meylan, France Dr. Nabil Bencheikh, Cedrat Technologies, Meylan, France Dr. Ronan Le
More informationProperties of Interdigital Transducers for Lamb-Wave Based SHM Systems
Properties of Interdigital Transducers for Lamb-Wave Based SHM Systems M. MANKA, M. ROSIEK, A. MARTOWICZ, T. UHL and T. STEPINSKI 2 ABSTRACT Recently, an intensive research activity has been observed concerning
More informationStudy on the Lift-off Effect of EMAT
17th World Conference on Nondestructive Testing, 25-28 Oct 2008, Shanghai, China Study on the Lift-off Effect of EMAT Yongsheng ZANG, Songling UANG, Wei ZAO, Shen WWANG, Dehui WU State Key Lab of Power
More information1831. Fractional derivative method to reduce noise and improve SNR for lamb wave signals
8. Fractional derivative method to reduce noise and improve SNR for lamb wave signals Xiao Chen, Yang Gao, Chenlong Wang Jiangsu Key Laboratory of Meteorological observation and Information Processing,
More informationMicrowave and optical systems Introduction p. 1 Characteristics of waves p. 1 The electromagnetic spectrum p. 3 History and uses of microwaves and
Microwave and optical systems Introduction p. 1 Characteristics of waves p. 1 The electromagnetic spectrum p. 3 History and uses of microwaves and optics p. 4 Communication systems p. 6 Radar systems p.
More information