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1990
Monday, January 1st
12:00 AM

3-D Finite Element Modeling of the Remote Field Eddy Current Effect

Section: C: Eddy Currents

Y. Sun, Nanjing Aeronautical Institute
H. Lin, Nanjing Aeronautical Institute
Y. K. Shin, Iowa State University
Z. You, Iowa State University
S. Nath, Iowa State University
W. Lord, Iowa State University

Brunswick, ME

12:00 AM

3D Numerical Simulation of Eddy Current Testing of a Block with a Crack

Section: C: Eddy Currents

Toshiyuki Takagi, University of Tokyo
Mitsuo Hashimoto, University of Tokyo
Toshihiko Sugiura, University of Tokyo
So Norimatsu, University of Tokyo
Seiji Arita, Univeristy of Tokyo
Kenzo Miya, Univeristy of Tokyo

Brunswick, ME

12:00 AM

A 3-D FEM-BEM Model for Electromagnetic Wave Interactions with Material

Section: C: Eddy Currents

Jian-She Wang, University of Akron
Nathan Ida, University of Akron

Brunswick, ME

12:00 AM

A CAD Interfaced Simulation Tool for X-Ray NDE Studies

Section: D: Radiography

F. Inance, Iowa State University
J. Gray, Iowa State University

Brunswick, ME

12:00 AM

A Computer Model of Eddy-Current Probe-Crack Interaction

Section: C: Eddy Currents

L. David Sabbagh, Sabbagh Associates Incorporated
Harold A. Sabbagh, Sabbagh Associates Incorporated

Brunswick, ME

12:00 AM

A General Model for Rayleigh Wave — Surface Feature Scattering Problems

Section: A: Elastic Wave Scattering and Flaw Sizing

R. J. Blake, SERC Daresbury Laboratory
L. J. Bond, University College London

Brunswick, ME

12:00 AM

A Method for Sizing Long Surface Cracks in Metals Based on the Measurement of the Surface Magnetic Field

Section: C: Eddy Currents

S. H. H. Sadeghi, University of Essex
D. Mirshekar-Syahkal, Univeristy of Essex

Brunswick, ME

12:00 AM

A Rigorous Model for Inverting Eddy-Current Data

Section: C: Eddy Currents

H. A. Sabbagh, Sabbagh Associates Incorporated

Brunswick, ME

12:00 AM

A Transient, Axisymmetric Formulation for Modeling of Composite Materials

Section: C: Eddy Currents

Min Eig Lee, University of Akron
Nathan Ida, University of Akron

Brunswick, ME

12:00 AM

Acoustic Scattering by Submerged Elastic Bodies: A Boundary Element Approach

Section: A: Elastic Wave Scattering and Flaw Sizing

Pratik Pran Goswami, Iowa State University
Thomas J. Rudolphi, Iowa State University
F. J. Rizzo, Iowa State Univeristy
D. J. Shippy, University of Kentucky

Brunswick, ME

12:00 AM

An Eddy Current Method for Flaw Characterization from Spatially Periodic Current Sheets

Section: C: Eddy Currents

Satish M. Nair, Iowa State University
James H. Rose, Iowa State University

Brunswick, ME

12:00 AM

An Image Quality Indicator Design for Radioscopy and Tomography

Section: D: Radiography

T. A. Siewert, National Institute of Standards and Technology
D. W. Fitting, National Institute of Standards and Technology
D. A. Shepherd, National Institute of Standards and Technology
M. W. Austin, National Institute of Standards and Technology
C. N. McCowan, National Institute of Standards and Technology

Brunswick, ME

12:00 AM

An Improved Method to Measure Slow Compressional Wave in Fluid-Saturated Porous Plates by Using Lamb Modes

Section: B: Elastic Wave Propagation

Qiang Xue, Ohio State University
Laszlo Adler, Ohio State University

Brunswick, ME

12:00 AM

Beam Parametrization of Localized Weak Debonding in a Layered Aluminum Plate

Section: B: Elastic Wave Propagation

Leopold B. Felsen, Weber Research Institute; Polytechnic University
Smaine Zeroug, Weber Research Institute; Polytechnic University

Brunswick, ME

12:00 AM

Boundary Integral and Finite Element Simulation of Electromagnetic NDE Phenomena

Section: C: Eddy Currents

S. Nath, Iowa State University
Y. K. Shin, Iowa State University
W. Lord, Iowa State University
Thomas J. Rudolphi, Iowa State University

Brunswick, ME

12:00 AM

Calculation of Eddy Current Fields for Coils of Arbitrary Shape

Section: C: Eddy Currents

R. E. Beissner, Southwest Research Institute
J. A. G. Temple, Harwell Laboratory

Brunswick, ME

12:00 AM

Computer Modeling of Pulsed Eddy-Currents in Conducting Materials for NDT Purposes

Section: C: Eddy Currents

Reinhold Ludwig, Worcester Polytechnic Institute
Xiao-Wei Dai, Worcester Polytechnic Institute
Ramisamy Palanisamy, Timken Company

Brunswick, ME

12:00 AM

Cylindrically Guided Waves in a Transversely Isotropic Shaft

Section: B: Elastic Wave Propagation

Y. M. Tsai, Iowa State University
S. N. Liu, Electric Power Research Institute
G. M. Light, Southwest Research Institute

Brunswick, ME

12:00 AM

Determination of the Elastic Constants of Composites Through the Inversion of Leaky Lamb Wave Data

Section: A: Elastic Wave Scattering and Flaw Sizing

M. R. Karim, University of California, Santa Barbara
A. K. Mal, University of California
Y. Bar-Cohen, McDonnell Douglas Corporation

Brunswick, ME

12:00 AM

Dispersion Curves Analysis for Bonded Plates at Low Fd

Section: B: Elastic Wave Propagation

F. Leomy, Université Paris
M. de Billy, Université Paris
G. Quentin, Université Paris
Y. Benelmostafa, Université de Technologie de Compiegne
J. F. de Belleval, Université de Technologie de Compiegne
N. Mercier, Université de Technologie de Compiegne
I. Molinero, Centre Commun de Recherche
D. Lecuru, Centre Commun de Recherche

Brunswick, ME

12:00 AM

Effects of Pulse Distortion on Phase Velocity Measurements Using the Zero-Crossing Shift Technique

Section: B: Elastic Wave Propagation

Y. Li, Iowa State University
R. Bruce Thompson, Iowa State University

Brunswick, ME

12:00 AM

Elastic Wave Scattering by Irregular Shaped Flaws

Section: A: Elastic Wave Scattering and Flaw Sizing

Paul J. Schafbuch, Iowa State University
R. Bruce Thompson, Iowa State University
F. J. Rizzo, Iowa State University
Thomas J. Rudolphi, Iowa State University

Brunswick, ME

12:00 AM

Elastic Wave Propagation in an Infinite Media

Section: B: Elastic Wave Propagation

Zhongqing You, Iowa State University
William Lord, Iowa State University

Brunswick, ME

12:00 AM

Experimental Verification of the G-H Measurement Model by Ultrasonic Diffraction in Single Crystals, and New [110] Longitudinal Propagation Results

Section: B: Elastic Wave Propagation

Emmanuel P. Papadakis, Iowa State University
Frank J. Margetan, Iowa State University
Byron P. Newberry, University of Cincinnati

Brunswick, ME

12:00 AM

Far Field Radiation of a Point Source on the Free Surface of Semi-Infinite Anisotropic Solids

Section: B: Elastic Wave Propagation

Kunyu Wu, Ohio State University
Peter B. Nagy, Ohio State University
Laszlo Adler, Ohio State University

Brunswick, ME

12:00 AM

Fast Leaky Modes on Cylindrical Metal-Ceramic Interfaces

Section: B: Elastic Wave Propagation

E. Drescher-Krasicka, National Institute of Standards and Technology
J. A. Simmons, National Institute of Standards and Technology
H. N.G. Wadley, National Institute of Standards and Technology

Brunswick, ME

12:00 AM

Inversion of Eddy-Current Data via Conjugate Gradients

Section: C: Eddy Currents

H. A. Sabbagh, Sabbagh Associates Incorporated
D. J. Radecki, Sabbagh Associates Incorporated
B. Shamee, Sabbagh Associates Incorporated
S. Barkeshli, Sabbagh Associates Incorporated
J.C. Treece, Sabbagh Associates Incorporated
S. Jenkins, Sabbagh Associates Incorporated

Brunswick, ME

12:00 AM

Inversion of Voltage Data to Predict Crack Shape

Section: C: Eddy Currents

Maureen McIver, University of Bath, Claverton Down

Brunswick, ME

12:00 AM

Low Frequency Scattering by a Planar Crack

Section: A: Elastic Wave Scattering and Flaw Sizing

Jianmin Qu, Georgia Institute of Technology

Brunswick, ME

12:00 AM

Material Density Distribution of a Radial Symmetric Product from a Single X-Ray Radiograph

Section: D: Radiography

A Notea, Quality Assurance and Reliability Technion
D. Pal, Quality Assurance and Reliability Technion
M. Deutsch, Bar-Iian University

Brunswick, ME

12:00 AM

Material Property Estimation Using Nonlinear Inversion

Section: A: Elastic Wave Scattering and Flaw Sizing

William R. Petrick, Thiokol Corporation
Lee H. Pearson, Thiokol Corporation

Brunswick, ME

12:00 AM

Microstructural Rayleigh Wave Dispersion on a Fluid-Coupled Anisotropic Surface with Vertical Lamination

Section: B: Elastic Wave Propagation

Adnan H. Nayfeh, University of Cincinnati
D. E. Chimenti, Materials Laboratiory

Brunswick, ME

12:00 AM

Model-Based Ultrasonic Flaw Classification and Sizing

Section: A: Elastic Wave Scattering and Flaw Sizing

Lester W. Schmerr, Iowa State University
Chien-Ping Chiou, Iowa State University
Stephen M. Nugen, Iowa State Univeristy

Brunswick, ME

12:00 AM

Modeling UT Through-Transmission Immersion Inspections at Oblique Incidence

Section: B: Elastic Wave Propagation

Frank J. Margetan, Iowa State University
Timothy A. Gray, Iowa State University
R. Bruce Thompson, Iowa State Univeristy
B. P. Newberry, University of Cincinnati

Brunswick, ME

12:00 AM

Numerical Analysis of Scattering by Interface Flaws

Section: A: Elastic Wave Scattering and Flaw Sizing

Yonglin Xu, Northwestern University
Jan D. Achenbach, Northwestern University

Brunswick, ME

12:00 AM

Numerical Simulation and Visualization Models of Stress Wave Propagation Graphite/Epoxy Composites

Section: B: Elastic Wave Propagation

R. D. Kriz, National Institute of Standards and Technology
J. M. Gary, National Institute of Standards and Technology

Brunswick, ME

12:00 AM

Numerical Simulation of Elastic Wave Scattering from Three-Dimensional Axisymmetric Surface Features

Section: A: Elastic Wave Scattering and Flaw Sizing

Peter H. Albach, University College London
Leonard J. Bond, University College London

Brunswick, ME

12:00 AM

Prediction and Analysis of Transient Eddy-Current Probe Signals

Section: C: Eddy Currents

J. R. Bowler, University of Surrey

Brunswick, ME

12:00 AM

Pulse Propagation in Cylindrically Wound Thick Composite Specimens

Section: B: Elastic Wave Propagation

David E. Budreck, Iowa State University

Brunswick, ME

12:00 AM

Reflection Coefficient of a Fluid-Coupled Elastic Layer

Section: B: Elastic Wave Propagation

D. E. Chimenti, Air Force materials Laboratory
S. I. Rokhlin, Ohio State University

Brunswick, ME

12:00 AM

Resolution Measurements of High Energy Radiography

Section: D: Radiography

Y. Bushlin, Quality Assurance and Reliability
Y. Segal, Quality Assurance and Reliability
A. Notea, Quality Assurance and Reliability

Brunswick, ME

12:00 AM

Scattering Characteristics of a Partially Debonded Compliant Inclusion-Matrix Interphase

Section: A: Elastic Wave Scattering and Flaw Sizing

M. Kitahara, Tokai University Shimizu
K. Nakagawa, Total Systems Institute
J. D. Achenbach, Northwestern University

Brunswick, ME

12:00 AM

The Thin-Skin Electromagnetic Field Near a Surface Crack in a Ferromagnetic Metal

Section: C: Eddy Currents

A M. Lewis, University College London
R. Collins, University College London
D. H. Michael, University College London

Brunswick, ME

12:00 AM

Transmission of an Ultrasonic Beam Through a Fluid-Solid Interface

Section: B: Elastic Wave Propagation

Alexander Sedov, Lakehead University
Lester W. Schmerr Jr., Iowa State University

Brunswick, ME

12:00 AM

Ultrasonic Inspection of Steam Generator Tubing by Cylindrical Guided Waves

Section: B: Elastic Wave Propagation

Mark V. Brook, Amdata Incorparated
Tran D.K. Ngoc, Drexel University
James E. Eder, Drexel University

Brunswick, ME

12:00 AM

Use of the Connection Machine to Study Ultrasonic Wave Propagation in Materials

Section: B: Elastic Wave Propagation

P. P. Delsanto, Politecnico di Torino
T. Whitcombe, Naval Research Laboratory
H. H. Chaskelis, Naval Research Laboratory
R. B. Mignogna, Naval Research Laboratory

Brunswick, ME

12:00 AM