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1985
Tuesday, January 1st
12:00 AM

A Finite Element Formulation for Ultrasonic NDT Modeling

Section: Scattering

R. Ludwig, Colorado State University
W. Lord, Colorado State University

San Diego, CA

12:00 AM

A Model for the Ultrasonic Scattering from Multi-Branched Cracks

Section: Scattering

J. D. Achenbach, Northwestern University
K.-Y. Hu, Northwestern University
A. N. Norris, Northwestern University
Timothy A. Gray, Iowa State University
R. Bruce Thompson, Iowa State University

San Diego, CA

12:00 AM

Acoustic Tomographic Reconstruction of Anomalies in Three-Dimensional Bodies

Section: Imaging and Reconstruction

R. M. Bevensee, Lawrence Livermore National Laboratory

San Diego, CA

12:00 AM

An Eddy Current Analysis System for Nuclear Fan Cooler Inspection Data Analysis and Interpretation

Section: Probes and Instruments

Guy T. Germana, General Research Corporation
Barbara B. Skiffington, General Research Corporation

San Diego, CA

12:00 AM

An Eddy-Current Model and Inversion Algorithms for Three-Dimensional Flaw Reconstruction

Section: Eddy-Current Applications

L. David Sabbagh, Analytics, Inc.
Harold A. Sabbagh, Analytics, Inc.

San Diego, CA

12:00 AM

An Efficient Numerical Method for Determination of Shapes, Sizes and Orientations of Flaws for Nondestructive Evaluation

Section: Theory

Y. M. Chen, State University of New York at Stony Brook
S. L. Wang, State University of New York at Stony Brook

San Diego, CA

12:00 AM

Analysis of Eddy Current Response due to Flaws in Imperfectly Conducting Materials

Section: Modeling

Stuart A. Long, University of Houston
Dr. Afroz J. M. Zaman, University of Houston

San Diego, CA

12:00 AM

Analysis of Flat Coils’ System with Displaced Sensors for Eddy Current NDE of Ferromagnetic Metals

Section: Probes and Instruments

Sam G. Marinov, Dresser Atlas

San Diego, CA

12:00 AM

Analysis of Many-Defect Systems

Section: Transducers and Signal Processing

John M. Richardson, Rockwell International Science Center
Kenneth W. Fertig Jr., Rockwell International Science Center

San Diego, CA

12:00 AM

Application of a Computer Model to Electric Current Perturbation Probe Design

Section: Modeling

R. E. Beissner, Southwest Research Institute
Gary L. Burkhardt, Southwest Research Institute

San Diego, CA

12:00 AM

Assessment of the Effects of Scanning Variations and Eddy Current Probe Type on Crack Detection

Section: Probability of Detection

Ward D. Rummel, Martin Marietta Corporation
Brent K. Christner, Martin Marietta Corporation
Steven J. Mullen, Martin Marietta Corporation

San Diego, CA

12:00 AM

Automatic Eddy Current Hole Centering for Aircraft Engine Components

Section: Probes and Instruments

Dave Stubbs, Systems Research Laboratories, Inc
Wally Hoppe, Systems Research Laboratories, Inc
Bob Olding, Systems Research Laboratories, Inc

San Diego, CA

12:00 AM

Automatic Eddy Current Inspection of Antirotation Windows in F100 Engine Compressor Air Seals

Section: Probes and Instruments

Wally Hoppe, Systems Research Laboratories, Inc
Dave Stubbs, Systems Research Laboratories, Inc

San Diego, CA

12:00 AM

Calibration Methods for Eddy Current Measurement Systems

Section: Probes and Instruments

J. C. Moulder, National Bureau of Standards
J. C. Gerlitz, National Bureau of Standards
B. A. Auld, Stanford University
M. Riaziat, Stanford University
S. Jeffries, Stanford University
G. McFetridge, Stanford University

San Diego, CA

12:00 AM

Characterization of a Periodic Surface Profile by Pole-Zero Parameterization of Elastodynamic Pulse Reflections

Section: Scattering

R. A. Roberts, Northwestern University
J. D. Achenbach, Northwestern University

San Diego, CA

12:00 AM

Characterization of Noise in Austenitic Stainless Steel

Section: Transducers and Signal Processing

Marvin F. Fleming, Amdata Systems, Inc

San Diego, CA

12:00 AM

Comparison of the T-Matrix And Helmholtz Integral Equation Methods for Wave Scattering Calculations

Section: Scattering

W. Tobocman, Case Western Reserve University

San Diego, CA

12:00 AM

Connection Between Time- and Frequency-Domain Three-Dimensional Inverse Problems for the Schrödinger Equation

Section: Theory

James H. Rose, Iowa State University
Margaret Cheney, Iowa State University
Brian DeFacio, Iowa State University

San Diego, CA

12:00 AM

Deconvolution by Design — an Approach to the Inverse Problem of Ultrasonic Testing

Section: Transducers and Signal Processing

D. Eitzen, National Bureau of Standards
N. Hsu, National Bureau of Standards
A. Carasso, National Bureau of Standards
T. Proctor, National Bureau of Standards

San Diego, CA

12:00 AM

Detection and Characterization of Surface Cracks Using Leaky Rayleigh Waves

Section: Ultrasonic Applications

A. Fahr, Ontario Research Foundation
W. R. Sturrock, Defence Research Establishment

San Diego, CA

12:00 AM

Development of a Rotating Ferromagnetic Resonance Eddy Current Probe for Inspecting Small Radius Curved Surfaces on Gas Turbine Engine Components

Section: Probes and Instruments

J. M. Prince, Pacific Northwest Laboratories

San Diego, CA

12:00 AM

Developments in Surface Crack Detection by the A.C. Field Technique

Section: Modeling

D. Mirshekar-Syahkal, University of London
R. Collins, University of London
D. H. Michael, University of London

San Diego, CA

12:00 AM

Diffusion, Waves, Phase and Eddy Current Imaging

Section: Display Methods

L. Udpa, Colorado State University
W. Lord, Colorado State University

San Diego, CA

12:00 AM

Double Amplitude Evaluation in Ultrasonic Testing

Section: Transducers and Signal Processing

Ulrich Opara, Krautkramer GmbH

San Diego, CA

12:00 AM

Eddy Current Curvilinear Scanned Linear Array Near Real-Time Imaging Technique

Section: Display Methods

H. Dale Collins, Pacific Northwest Laboratories
R. Parks Gribble, Pacific Northwest Laboratories

San Diego, CA

12:00 AM

Elastic Wave Scattering by a Surface-Breaking Planar Crack in 3d

Section: Scattering

William M. Visscher, Los Alamos National Laboratory

San Diego, CA

12:00 AM

Elastodynamic Stress Intensity Factors for an Interface Crack in a Layered Half Space

Section: Scattering

David B. Bogy, University of California
Huey-Ju Pearl Yang, University of California

San Diego, CA

12:00 AM

EMAT/Synthetic Aperture Approach to Thick-Weld Inspection

Section: Transducers and Signal Processing

Raymond E. Schramm, National Bureau of Standards
John C. Moulder, National Bureau of Standards

San Diego, CA

12:00 AM

Error Sensitivity of Long and Intermediate Wavelength Flaw Reconstruction

Section: Transducers and Signal Processing

S. J. Wormley, Iowa State University
D. O. Thompson, Iowa State University

San Diego, CA

12:00 AM

Evaluation of an Eddy-Current Tape-Head Probe

Section: Probes and Instruments

J. P. Watjen, SRI International
A. J. Bahr, SRI International

San Diego, CA

12:00 AM

Exact Solution of Probabilistic Inverse Problem Pertaining to the Scattering of Elastic Waves from General Inhomogeneities

Section: Theory

John M. Richardson, Rockwell International Science Center

San Diego, CA

12:00 AM

Experimental Verification of Eddy-Current Flaw Theory

Section: Modeling

C. V. Dodd, Oak Ridge National Laboratory
C. D. Cox, Oak Ridge National Laboratory
W. E. Deeds, Oak Ridge National Laboratory

San Diego, CA

12:00 AM

Flaw Detection in Aluminum Welds by the Electric Current Perturbation Method

Section: Probes and Instruments

Gary L. Burkhardt, Southwest Research Institute
B. N. Ranganathan, Martin Marietta Aerospace

San Diego, CA

12:00 AM

Frequency Dependence of Electric Current Perturbation Probe Response

Section: Probes and Instruments

R. E. Beissner, Southwest Research Institute

San Diego, CA

12:00 AM

Holographic Inspection for Debonds in Sonar Transducer Head Mass/Shroud Subassemblies

Section: Imaging and Reconstruction

Cecil M. Teller, Texas Research Institute, Inc.

San Diego, CA

12:00 AM

Identifying Spherical Voids and Inclusions by Matching the Power Spectra

Section: Ultrasonic Applications

K. C. Tam, General Electric Company
R. S. Gilmore, General Electric Company
R. A. Hewes, General Electric Company
J. R. Juron, General Electric Company

San Diego, CA

12:00 AM

Improved Probe-Flaw Interaction Modeling, Inversion Processing, and Surface Roughness Clutter

Section: Eddy-Current Applications

B. A. Auld, Stanford University
G. McFetridge, Iowa State University
M. Riaziat, Iowa State University
S. Jefferies, Iowa State University

San Diego, CA

12:00 AM

Improvements in Ultrasonic Measurement Modeling with Applications to Ultrasonic Reliability

Section: Probability of Detection

Timothy A. Gray, Iowa State University
R. Bruce Thompson, Iowa State University
B. P. Newberry, Iowa State University

San Diego, CA

12:00 AM

Interaction of Ultrasonic Waves with Simulated and Real Fatigue Cracks

Section: Scattering

D. K. Rehbein, Iowa State University
R. Bruce Thompson, Iowa State University
O. Buck, Iowa State University

San Diego, CA

12:00 AM

Inversion of Eddy Current Data Using Holographic Principles

Section: Display Methods

B. P. Hildebrand, Sigma Research, Inc.
G. L. Fitzpatrick, Sigma Research, Inc.

San Diego, CA

12:00 AM

Long and Intermediate Wavelength Flaw Reconstruction

Section: Imaging and Reconstruction

D. O. Thompson, Iowa State University
S. J. Wormley, Iowa State University

San Diego, CA

12:00 AM

Low-Frequency Acoustic Microscopy

Section: Imaging and Reconstruction

P. Reinholdtsen, Stanford University
W. W. Hipkiss, Stanford University
B.T. Khuri-Yakub, Stanford University

San Diego, CA

12:00 AM

Magnetic Field Mapping with a Squid Device

Section: Probes and Instruments

F. R. Fickett, National Bureau of Standards
T. E. Capobianco, National Bureau of Standards

San Diego, CA

12:00 AM

Magnetic Resonance Imaging in Medicine: Quantitative Tissue Characterization

Gary H. Glover, General Electric Company

San Diego, CA

12:00 AM

Modeling of Real UT Transducer Field/Flaw Interactions

Section: Scattering

B. A. Barna, EG & G Idaho, Inc.

San Diego, CA

12:00 AM

Numerical Electromagnetic Modeling for Three-Dimensional Inspection of Ferrous Metals

Section: Modeling

Harold A. Sabbagh, Analytics, Inc.
L. David Sabbagh, Analytics, Inc.

San Diego, CA

12:00 AM

Precision Measurement of Eddy Current Coil Parameters

Section: Probes and Instruments

T. E. Capobianco, National Bureau of Standards
F. F. Fickett, National Bureau of Standards

San Diego, CA

12:00 AM

Probability of Detection of Flaws in a Gas Turbine Engine Component Using Electric Current Perturbation

Section: Probability of Detection

Gary L. Burkhardt, Southwest Research Institute
R. E. Beissner, Southwest Research Institute

San Diego, CA

12:00 AM

Recent Developments in Eddy Current Testing

Section: Probes and Instruments

Gerd Dobmann, Fraunhofer-Institut für zerstörungsfreie Prüfverfahren
Kurt Betzold, Fraunhofer-Institut für zerstörungsfreie Prüfverfahren
Paul Holler, Fraunhofer-Institut für zerstörungsfreie Prüfverfahren

San Diego, CA

12:00 AM

Reconstruction of Defects by Ultrasonic Testing Using Synthetic Aperture Procedures

Section: Imaging and Reconstruction

Volker Schmitz, Fraunhofer-Institut für zerstörungsfreie Prüfverfahren
Paul Holler, Fraunhofer-Institut für zerstörungsfreie Prüfverfahren

San Diego, CA

12:00 AM

Reflection of Ultrasonic Waves by an Array of Microcracks

Section: Scattering

Y. C. Angel, Northwestern University
J. D. Achenbach, Northwestern University

San Diego, CA

12:00 AM

Relationship of Gaussian Beam Theory to Scanned Ultrasonic Measurements with Commercial Transducers

Section: Transducers and Signal Processing

R. Bruce Thompson, Iowa State University
E. F. Lopes, Iowa State University

San Diego, CA

12:00 AM

Resonant Scattering and Crack Sizing

Section: Ultrasonic Applications

Timothy A. Gray, Iowa State University
J. H. Rose, Iowa State University

San Diego, CA

12:00 AM

Response of an Elastic Plate to Surface Loads and Buried Dislocation Sources

Section: Scattering

N. Vasudevan, University of California
A. K. Mal, University of California

San Diego, CA

12:00 AM

Signal Processing for Underclad Crack Sizing

Section: Ultrasonic Applications

R. Shankar, Tetra Tech
S. S. Lane, Tetra Tech
T. J. Paradiso, Tetra Tech
J. R. Quinn, EPRI

San Diego, CA

12:00 AM

Statistical Approach to the Automation of Flaw Detection

Section: Probability of Detection

R. K. Elsley, Rockwell International Science Center
K. W. Fertig, Rockwell International Science Center
J. M. Richardson, Rockwell International Science Center
F. Cohen-Tenoudji, Rockwell International Science Center

San Diego, CA

12:00 AM

Statistical Flaw Detection in a Scanning Mode

Section: Probability of Detection

K. W. Fertig, Rockwell International Science Center
J. M. Richardson, Rockwell International Science Center
R. K. Elsley, Rockwell International Science Center

San Diego, CA

12:00 AM

Status of Implementation of the Inverse Born Sizing Algorithm

Section: Ultrasonic Applications

R. Bruce Thompson, Iowa State University

San Diego, CA

12:00 AM

Surface Flaw Characterization Using Ultrasonic Backscattered Satellite Pulse Technique

Section: Ultrasonic Applications

Engmin J. Chern, General Electric Company

San Diego, CA

12:00 AM

Surface Wave Modes on Spherical Cavities Excited by Incident Ultrasound

Section: Scattering

Anton Nagl, Catholic University
Y. J. Stoyanov, Catholic University
J. V. Subrahmanyam, Catholic University
H. Uberall, Catholic University
P. P. Delsanto, University of Puerto Rico
J. D. Alemar, University of Puerto Rico
E. Rosario, University of Puerto Rico

San Diego, CA

12:00 AM

System Analysis for Wide Band Ultrasonic Test Set-Ups

Section: Transducers and Signal Processing

Ulrich Opara, Krautkramer GmbH

San Diego, CA

12:00 AM

The Effects of Noise and Bandlimiting on a One Dimensional Time Dependent Inverse Scattering Technique

Section: Theory

J. P. Corones, Iowa State University
R. J. Krueger, Iowa State University
C. R. Vogel, Iowa State University

San Diego, CA

12:00 AM

The Elastic Compliance of Imperfect Interfaces: Review and Relationship to Ultrasonic Scattering

Section: Scattering

Jai-Man Baik, Iowa State University
R. Bruce Thompson, Iowa State University

San Diego, CA

12:00 AM

The Focused-Beam Reflection-Mode Acoustic Microscope at Lawrence Livermore National Laboratory — Development and Present Capability

Section: Imaging and Reconstruction

R. D. Weglein, Lawrence Livermore National Laboratory
R. F. Wilson, Lawrence Livermore National Laboratory
S. E. Benson, Lawrence Livermore National Laboratory

San Diego, CA

12:00 AM

The Use of Surface Acoustic Waves to Study Small Fatigue Cracks in 7075-T651 Aluminum and 4340 Steel

Section: Scattering

H. H. Yuce, Stanford University
D. V. Nelson, Stanford University
M. T. Resch, Stanford University

San Diego, CA

12:00 AM

Tomographic Reconstruction of Internal Temperature

Section: Imaging and Reconstruction

S. J. Norton, National Bureau of Standards
H. N. G. Wadley, National Bureau of Standards

San Diego, CA

12:00 AM

Transmission Scanning Acoustic Microscopy for Tilted Plate Specimens

Section: Imaging and Reconstruction

J. K. Wang, University of California
C. S. Tsai, University of California

San Diego, CA

12:00 AM

Ultrasonic Scattering in Composites Using Spatial Fourier Transform Techniques

Section: Scattering

Lester W. Schmerr Jr., Iowa State University

San Diego, CA

12:00 AM

Ultrasonic Welding Defect Sizing by Advanced Pattern Recognition Techniques

Section: Transducers and Signal Processing

Roger W. Y. Chan, Tektrend International Inc.
Douglas Sharp, Tektrend International Inc.
D. Robert Hay, Tektrend International Inc.
Jean-Pierre Monchalin, Energy, Mines and Resources
Jean Bussiere, Industrial Materials Research Institute

San Diego, CA

12:00 AM

Use of the Analytic Signal in Ultrasonic Imaging

Section: Imaging and Reconstruction

Zane W. Bell, Martin Marietta Energy Systems, Inc.

San Diego, CA

12:00 AM