Electromagnetic nondestructive evaluation (XI) : [12th International Workshop on Electromagnetic Nondestructive Evaluation (ENDE'07) was held form 19th - 21st June 2007 ... hosted by the Wolfson Centre for Magnetics at Cardiff University, Cardiff, Wales U

The 12th International Workshop on Electromagnetic Nondestructive Evaluation (ENDE'07) was held from the 19th to the 21st of June 2007 at the Wolfson Centre for Magnetics at Cardiff University, Cardiff, United Kingdom. The aim of this annual workshop is to bring together engineers and scientists from universities, research institutions and industry to discuss and exchange the latest ideas and findings in basic research and development as well as industrial applications of electromagnetic non-destructive evaluation. This publication contains the proceedings of the workshop. In this book you will find a variety of topics on both theoretical and experimental aspects of nondestructive evaluation in eddy currents, magnetic measurements, magnetic flux leakage, Barkhausen methods, new methods and inverse problems for crack detection. Title page 1 Preface 5 List of Referees 7 Organizing Committees 9 List of Participants 11 Contents 15 Invited Speakers 19 A Start of New Field of Electromagnetic and Mechanical Maintenance Engineering 21 NDE Research Makes a Difference 28 Industrial Applications of 3MA - Micromagnetic Multiparameter Microstructure and Stress Analysis 36 3D Nonlinear Finite Element Analysis of Electromagnetic Inspection of Defects in Steel 44 Magnetic Materials 53 Evaluation of Irradiation Embrittlement in Fe-Cu-Ni-Mn Model Alloys by Measurements of Magnetic Minor Hysteresis Loops 55 Analysis of Barkhausen Noise Characteristics and Mechanical Properties on Cold Rolled Low Carbon Steel 60 A Bridge Between NDE and Charpy Impact Testing 64 ND-Materials Characterization of Neutron-Induced Embrittlement in German Nuclear Reactor Pressure Vessel Material by Micromagnetic NDT Techniques 72 Evaluation of Chill Contents in Flake Graphite Cast Irons Using AC Magnetization Method 80 Characterisation of Microstructures in Heat Treated Maraging Steel Using Eddy Current and Barkhausen Emission Techniques 88 Novel Acoustic Barkhausen Noise Transducer and Its Comparison with Electromagnetic Acoustic Transducer 96 Modelling and Measurement of Decarburisation of Steels Using a Multi-Frequency Electromagnetic Sensor 104 Assessment of Grinding Damage on Gear Teeth Using Magnetic Barkhausen Noise Measurements 108 Evaluation of Contact Fatigue Damage on Gears Using the Magnetic Barkhausen Noise Technique 116 Inverse Problems 125 3D Reconstruction of Flaws in Metallic Materials by Eddy Currents Inspections 127 Multi-Frequency Eddy Current Imaging for the Detection of Buried Cracks in Aeronautical Structures 135 A Comparative Study of Source Separation Techniques for the Detection of Buried Defects in the EC NDE of Aeronautical Multi-Layered Lap-Joints 143 Fundamental Feature Extraction Methods for the Analysis of Eddy Current Data 151 Inversion of Potential Drop Data for the Reconstruction of Crack Depth Profiles 159 Automatic Classification of Defects with the Review of an Appropriate Feature Extraction 166 Microwave Nondestructive Detection of Longitudinal Cracks in Pipe with U-Bend and Prediction of Its Location by Signal Processing 172 Some Experiences with Microwave Investigation of Material Defects 180 Modeling 187 Effect of Crack Closure on Quantitative ECT Inspection of Closed Fatigue Cracks 189 Toward the Reconstruction of Stress Corrosion Cracks Using Benchmark Eddy Currents Signals 197 Evaluation of Subsurface Cracks in Riveted Aluminium Joints Using Industrial Eddy Current Instrumentation 205 Design of a System for the Long Defects Detection with Advanced Methods for Eddy-Currents Analysis 213 Theory of Four-Point Alternating Current Potential Drop Measurements on a Layered Conductive Half-Space 221 Integration of Tilted Coil Models in a Volume Integral Method for Realistic Simulations of Eddy Current Inspections 229 Modeling of Flawed Riveted Structures for EC Inspection in Aeronautics 235 Numerical Modeling of Eddy Current Nondestructive Evaluation of Ferromagnetic Tubes via an Integral Equation Approach 243 Design of Reflection Type Pulsed Eddy Current Nondestructive Testing 249 Applications 257 Noninvasive Characterization of Bjork-Shiley Convexo-Concave Prosthetic Heart Valves Using an Electromagnetic Method 259 Remote Field Eddy Current Control Using Rotating Magnetic Field Transducer. Application to Pressure Tubes Examination 267 Lifetime Prediction of Pressure Tubes in PHWR Nuclear Power Plants Using Eddy Current Data 275 Electromagnetic Non-Destructive Evaluation of Reinforced Concrete Rebars 281 Advanced Probe with Array of Pick-Up Coils for Improved Crack Evaluation in Eddy-Current Non-Destructive Testing 289 Observation of Stress Loaded Ferromagnetic Samples Using Remanent Flux Leakage Method 294 Evaluation of Complex Multifrequency Eddy Current Transducer Designed for Precise Flaw Depth Measurements 301 Comparative Study of Coil Arrangements for the EC Testing of Small Surface Breaking Defects 306 Author Index 313