'Microfocus X-Ray Technology-A Review of Developments and Application.- Elastic Wave Scattering Methods: Assessments and Suggestions.- Ultrasonic Imaging and the Long Wavelength Phase.- Scattering of Elastic Waves by Small Surface-Breaking or Subsurface Cracks in Three Dimensions.- Elastic Wave Scattering from an Interface Crack in a Layered Half Space Under Water.- Scattering of Plane Waves By a Partially Closed Crack.- Developments in the Finite Element Modeling of Ultrasonic NDT Phenomena.- Numerical Calculations of Ultrasonic Field/Crack Interactions.- Reflection and Transmission by an Array of Spherical Voids in an Elastic Solid.- Ultrasonic Detection and Characterization of Microspherical Defects in Model Ceramics.- Backscattering of Acoustic Signals from Inhomogeneities in Solids.- A Model for the Effects of Aberrations on Refracted Ultrasonic Fields.- Evaluation of Ultrasonic Beam Models for the Case of A Piston Transducer Radiating Through a Liquid-Solid Interface.- Separation of Spatial and Temporal Effects in an Ultrasonic Transducer.- Improved Ultrasonic Methods for Gas Turbine NDE.- Eddy Current Field Theory for a Flawed Conducting Half-Space.- Performance of Large Scale Finite Element Eddy Current and Ultrasonic Models on a Vector Computer.- Uniform Interrogating Field Eddy Current Technique and its Application.- Application of Uniform Field Eddy Current Technique to 3-D EDM Notches and Fatigue Cracks.- A Model of Pulsed Eddy Current Crack Detection.- Pulsed Eddy-Current Crack-Characterization Experiments.- An Assessment of Factors That Influence the Skin Depth in A.C.F.M. Crack Sizing.- On the Accuracy of A.C. Flux Leakage, Eddy Current, EMAT and Ultrasonic Methods of Measuring Surface Connecting Flaws in Seamless Steel Tubing.- Theoretical and Experimental Investigation of Eddy Current Inspection of Pipes with Arbitrary Position of Sensor Coils.- Fourier Descriptor Classification of Magnetite Buildup in PWR Steam Generators.- Measurement of the Induced Magnetic Field in a Flawed Tube.- Modeling of the Leakage Induction Field Through Notches at Saturation.- Surface Distributions for Eddy Current Probes.- Acoustic Emission: Nature's Ultrasound.- Thermal Wave Scattering.- Fundamental Limitations in Inverse Source and Scattering Problems in NDE.- The Parametric Inverse Problem in Transient Scattering.- Deterministic Source Inversion for Wave Propagation Problems in Nondestructive Testing.- Three Dimensional Inverse Scattering for the Classical Wave Equation with Variable Speed.- A Perturbation Method for Inverse Scattering in Three-Dimensions Based on. the Exact Inverse Scattering Equations.- A Flaw Sizing Method Using the Zeroes in the Ultrasonic Scattering Amplitude.- Ultrasonic Crack Characterization: A Constrained Inversion Algorithm.- A Discussion of the Inverse Problem in Electromagnetic NDT.- Semi-Elliptical Surface Flaw EC Interaction and Inversion: Theory.- Semi-Elliptical Surface Flaw EC Interaction and Invers ion: Experiment.- The A.C.F.M. Technique: Recent Advances in Crack Depth Measurement.- A Multifrequency Algorithm for Inverting Eddy-Current Data and Reconstructing Three-Dimensional Anomalies in Graphite-Epoxy.- Information Extraction from Multivariate Images.- Thermal Wave Physics in NDE.- Contrast Mechanisms in the Thermoacoustic Microscope.- Imaging of Mechanically Induced Thermal Heat Patterns.- Ion-Acoustic Imaging of Surface Flaws in Aluminum.- Imaging of Electromagnetic NDT Phenomena.- Image Enhancement via Extrapolation Techniques: A Two Dimensional Iterative Scheme a Direct Matrix Inversion Scheme.- The Effects of Surface Roughness on Subsurface Defect Detection Using Acoustic Microscopy.- Practical Experiences with LSAFT.- Imaging of Subsurface Artifacts with the Analytic Signal.- Reconstruction of Defect Geometries in Ultrasonic NDT.- Reconstruction of the Geometry of a Surface-Breaking Cra
This volume (Parts A and B) contains edited papers presented at the annual Review of Progress in Quantitative Nondestructive Evaluation held at the Fort Magruder Inn, Williamsburg, Virginia, June 23-28, 1985. The Review was organized and sponsored by the Center for NDE at Iowa State University and the Ames Laboratory of the U.S. Department of Energy, in cooperation with the Office of Basic Energy Sciences, USDOE, and the Materials Laboratory at Wright-Patterson Air Force Base. In addition, the NASA-Langley Research Center and the College of William and Mary provided valuable assistance with local arrangements. Approximately 340 attendees, representing various government agencies, industry, and universities, participated in the technical presentations, poster sessions, and discussions. The interchange of technical information in NDE research and engineering represented by this Review is certainly one of the most comprehensive in the field. In order to present the reader with a more useful document, we have chosen to organize the symposium papers in these Proceedings by subject rather than by the order of presentation at the Review. This arrangement has been realized by selecting topical subject headings many are new or revised for this year -- under which the large majority of papers would reasonably fall. These categories cover a broad spectrum of research in NDE and encompass activities from fundamental work to early engineering applications. The following paragraphs capsulize some of the research presented in these Proceedings.
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