Schedule

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1993
Friday, January 1st
12:00 AM

A Comparison of Different Methods for the Detection of a Weak Adhesive/Adherend Interface in Bonded Joints

Section: Bonded Joints

Peter Cawley, Imperial College
Tom Pialucha, Imperial College
Michael Lowe, Imperial College

La Jolla, CA

12:00 AM

An Acousto-Ultrasonic NDE Technique for Monitoring Material Anisotropy

Section: Composite Properties

Hual-Te Chien, Argonne National Laboratory
Shuh-Haw Sheen, Argonne National Laboratory
Apostolos C. Raptis, Argonne National Laboratory

La Jolla, CA

12:00 AM

Analysis of Bond-Stiffness Deterioration due to Distributed Disbonds

Section: Interfaces

Jan D. Achenbach, Northwestern University
Z.-L. Li, Northwestern University

La Jolla, CA

12:00 AM

Analysis of Detection of Delaminations in Fiber Reinforced Composite Tubes Using Axially Symmetric Guided Waves

Section: Composite Defects

T. W. Kohl, University of Colorado, Boulder
W. P. Rogers, University of Colorado, Boulder
Subhendu K. Datta, University of Connecticut

La Jolla, CA

12:00 AM

Auantitative Thermal Diffusivity Measurements on Composite Fiber Volume Fraction (FVF) Samples

Section: Composite Properties

Joseph N. Zalameda, National Aeronautics and Space Administration
William P. Winfree, National Aeronautics and Space Administration

La Jolla, CA

12:00 AM

Bond Surface Contamination Imaging Using an AOTF Spectrometer

Section: Bonded Joints

Lee H. Pearson, Thiokol Corporation

La Jolla, CA

12:00 AM

Characterization of Porosity in Thick Composites Using Ultrasonic Wave Velocity Measurements

Section: Composite Properties

I. N. Komsky, Northwestern University
I. M. Daniel, Northwestern University
S.-C. Wooh, Northwestern University

La Jolla, CA

12:00 AM

Correlation of NDE Parameters with Fatigue Lifetime of Aircraft Adhesive Bonds

Section: Bonded Joints

H. Aglan, Tuskegee University
L. Kennebrew, Tuskegee University
D. K. Hsu, Iowa State University
T. Patton, Iowa State University

La Jolla, CA

12:00 AM

Damage Accumulation in Graphite-Epoxy Composites During Compressive Fatigue

Section: Composite Defects

Chris Byrne, Johns Hopkins University
Joseph W. Krynicki, Johns Hopkins University
Robert E. Green Jr., Johns Hopkins University

La Jolla, CA

12:00 AM

Disbond Detection Using Peak Amplitude of Pulse-Echo Signals for Various Thicknesses and Transducer Frequencies

Section: Bonded Joints

M. N. Abedin, National Aeronautics and Space Administration
P. H. Johnson, National Aeronautics and Space Administration
D. R. Prabhu, National Aeronautics and Space Administration

La Jolla, CA

12:00 AM

Eddy Current measurement of Fiber Volume Fraction in Metal Matrix Composite Extrusions

Section: Composite Properties

R. E. Beissner, Southwest Research Institute
G. L. Burkhardt, Southwest Research Institute
J. L. Fisher, Southwest Research Institute

La Jolla, CA

12:00 AM

Effect of Debonding in Fiber-Reinforced Compsites on Ultrasonic Backscattering

Section: Composite Defects

Paul Beattie, University of Surrey
R. C. Chivers, University of Surrey
L. W. Anson, University of Surrey

La Jolla, CA

12:00 AM

Evaluating the Integrity of Adhesive Bonds by the Measurement of Acoustic Properties under Stresses

Section: Bonded Joints

V. Jagasivamani, National Aeronautics and Space Administration
Alphonso C. Smith, Hampton University

La Jolla, CA

12:00 AM

Examination of Fiber-Matrix Interfaces of Composite Materials Using Dual Beam Scanning Acoustic Microscopy

Section: Interfaces

Shamachary Sathish, National Aeronautics and Space Administration
William T. Yost, National Aeronautics and Space Administration
John H. Cantrell, National Aeronautics and Space Administration

La Jolla, CA

12:00 AM

Experimental Investigation of Ultrasonic Vibrations of Thin Fibers Embedded in Matrix

Section: Interfaces

Michel de Billy, Université Paris VII
Peter B. Nagy, Ohio State University
Gabor Blaho, Ohio State University
Suqin Meng, Ohio State University
Gerard Quentin, Université Paris VII
Laszlo Alder, Ohio State University

La Jolla, CA

12:00 AM

Experimental Study of Thermal oxidation Damage in Ceramic Composites Using Ultrasonic Waves

Section: Composite Defects

Y.-C. Chu, Ohio State University
S. I. Rokhlin, Ohio State University
G. Y. Baaklini
Ramakrishna Bhatt, National Aeronautics and Space Administration

La Jolla, CA

12:00 AM

Fabrication and NDE of Multi-Wave Thermoset GR/EP Composites

Section: Composite Defects

Vinay Dayal, Iowa State University
Zang Xinlian

La Jolla, CA

12:00 AM

Further on Positron Testing of Carbon Fiber Composites

Section: Composite Defects

J. G. Byrne, University of Utah
K. Schick, University of Utah

La Jolla, CA

12:00 AM

Integrated Ultrasonic Technique for Characterization of Composite Materials

Section: Composite Properties

I. N. Komsky, Northwestern University
Jan D. Achenbach, Northwestern University
I. M. Daniel, Northwestern University

La Jolla, CA

12:00 AM

Isolating Fracture-Induced Anisotropy from Background Anisotropy

Section: Composite Properties

Julie A. Hood, University of Miami
Richard B. Mignogna, United States Department of Defense

La Jolla, CA

12:00 AM

Lamb Wave Mode Selection for Increased Sensitivity ot Interfacial Weaknesses of Adhesive Bonds

Section: Bonded Joints

A. Pilarski, Pennsylvania State University
Joseph L. Rose, Pennsylvania State University
J. Ditri, Pennsylvania State University
D. Jiao, Pennsylvania State University
K. Rajana, Pennsylvania State University

La Jolla, CA

12:00 AM

Laser Ultrasonic Inspection of Graphite Epoxy Laminates

Section: Composite Defects

Christian Padioleau, Ultra Optec Inc.
Paul Bouchard, Ultra Optec, Inc.
René Héon, National Research Council Canada
Jean-Pierre Monchalin, National Research Council Canada
Francis F. Chang, General Dynamics
Tomy E. Drake, General Dynamics
Kenneth I. McRae, Defense Research and Development Canada

La Jolla, CA

12:00 AM

Luminescence Sensing of Stress in Composite Structures

Section: Composite Properties

H. J. Hough, University of Virginia
J. N. Demas, University of Virginia
Haydn N. G. Wadley, University of Virginia

La Jolla, CA

12:00 AM

Matrix-Fiber Interface Characterization in Metal Matrix Composites Using Ultrasonic Shear-Wave Back-Reflection Coefficient Technique

Section: Interfaces

Theodore E. Matikas, United States Department of Defense
Prasanna Karpur, University of Dayton

La Jolla, CA

12:00 AM

Modeling Anisotropic Conductivity Behavior of SiCp/Al metal-Matrix Composite Extrusions

Section: Composite Properties

Peter K. Liaw, Westinghouse Science & Technology Center
R. Pitchumani, Carnegie Mellon University
S.-C. Yao, Carnegie Mellon University
D. K. Hsu, Iowa State University
B. Foster, Iowa State University
H. Jeong, Iowa State University

La Jolla, CA

12:00 AM

Nindestructive Evaluation of Metal Matrix Composite Products with Implanted Defects

Section: Composite Defects

Robert E. Shannon, Westinghouse
Peter K. Liaw, Westinghouse Science & Technology Center
W. C. Harrigan, DWA Composite Specialties, Inc.

La Jolla, CA

12:00 AM

Nondestructive Characterization of Damaged Bonds

Section: Bonded Joints

Laurence J. Jacobs, Georgia Institute of Technology
Jianmin Qu, Georgia Institute of Technology

La Jolla, CA

12:00 AM

Nondestructive Characterization of TMC Materials: A Correlation Between Advanced Ultrasonic Measurements and Internal Material Conditions

Section: Composite Properties

Halina M. Parzuchowski, McDonnell Douglas Corporation
Mark K. Reighard, McDonnell Douglas Corporation
Kyle W. Hollman, Washington University
Scott M. Handley, Washington University
James G. Miller, Washington University
Mark R. Holland, Washington University

La Jolla, CA

12:00 AM

On the Differentiation of Diffusion Bond Strength Using the Total Acoustic Energy Reflected from the Bond

Section: Interfaces

G. C. Ojard, Pratt and Whitney
Otto Buck, Iowa State University
D. K. Rehbein, Iowa State University
M. S. Hughes, Iowa State University

La Jolla, CA

12:00 AM

Photothermal Inspection of Impact Damages on Carbon-Glass Fibre Composites Using a Simple Hand Scanner Measurement System

Section: Composite Defects

Jussi Varis, University of Helsinki
Reijo Lehtiniemi, University of Helsinki
Jari Hartikainen, University of Helsinki
Mauri Luukkala, University of Helsinki

La Jolla, CA

12:00 AM

Porosity Measurement in Composites Using Ultrasonic Attenuation Methods

Section: Composite Properties

Francis A. Reed, United Technologies Research Center
Thomas J. Batzinger, United Technologies Research Center
Robert W. Reed, United Technologies Research Center
Staffan Jonsson, Panametrics, Inc.

La Jolla, CA

12:00 AM

Propagation of Laser Generated Broadband Ultrasonic Pulses in a Thick Carbon Fibre Composite Plate

Section: Composite Properties

L. P. Scudder, Warwick University
D. A. Hutchins, Warwick University
N. Guo, Imperial College of Science and Technology

La Jolla, CA

12:00 AM

Quantitative Nondestructive Evaluation of Carbon-Carbon Composites by Pulsed Infrared Thermography

Section: Composite Properties

P. M. Delpech, Office National d'Etudes et de Recherches Aerospatiales
D. M. Boscher, Office National d'Etudes et de Recherches Aerospatiales
F. Lepoutre, Office National d'Etudes et de Recherches Aerospatiales
A. A. Déom, Office National d'Etudes et de Recherches Aerospatiales
D. L. Balageas, Office National d'Etudes et de Recherches Aerospatiales

La Jolla, CA

12:00 AM

Real-Time Ultrasonic Determination of Elastic Constants

Section: Composite Properties

William R. Petrick, Thiokol Corporation

La Jolla, CA

12:00 AM

Real-Time Ultrasonic Investigation of Fiber-Matrix Debonding in Ceramic-Matrix Composite

Section: Interfaces

Shi-Chang Wooh, Northwestern University
Isaac M. Daniel, Northwestern University

La Jolla, CA

12:00 AM

Response of Cross-Ply and Quasi-Isotropic Laminates to Distributed Dynamic Surface Loads

Section: Composite Properties

Shyh-Shiuh Lih, University of California, Los Angeles
Ajit K. Mal, University of California, Los Angeles

La Jolla, CA

12:00 AM

Scattering of Elastic Waves by Interface Cracks between Dissimilar Materials

Section: Interfaces

Sohichi Hirose, Okayama University
Michihiro Kitahara, Tokai University

La Jolla, CA

12:00 AM

Second Order Asymptotic Boundary Conditions for Modeling of Imperfect Interface

Section: Interfaces

S. I. Rokhlin, Ohio State University
W. Huang, Ohio State University

La Jolla, CA

12:00 AM

Simulation and Experimental Study of Ultrasonic Signals from lap Joints in the Presence of Nonuniform Thickness Values

Section: Bonded Joints

D. R. Prabhu, National Aeronautics and Space Administration
M. N. Abedin, National Aeronautics and Space Administration
William P. Winfree, National Aeronautics and Space Administration

La Jolla, CA

12:00 AM

The Application of Thermal Diffusivity Imaging to Sic-Fiber-Reinforced Silicon Nitride

Section: Composite Properties

K. Elliott Cramer, National Aeronautics and Space Administration
William P. Winfree, National Aeronautics and Space Administration
Edward R. Generazio, National Aeronautics and Space Administration
Ramakrishna T. Bhatt, National Aeronautics and Space Administration
Dennis S. Fox, National Aeronautics and Space Administration

La Jolla, CA

12:00 AM

Theoretical and Experimental Study of Composite Materials Using Longitudinal Ultrasonic Spectroscopy

Section: Composite Properties

M. Ourak, Universite de Valenciennes
M. Ouaftouh, Universite de Valenciennes
J.-M. Rouvaen, Universite de Valenciennes
C. Bruneel, Universite de Valenciennes

La Jolla, CA

12:00 AM

Three Dimensional Response of a Cross-Ply Composite Plate with Imperfect Interfaces

Section: Interfaces

Ratnam Paskaramoorthy, University of Connecticut
Subhendu K. Datta, University of Connecticut

La Jolla, CA

12:00 AM

Ultrasonic Characterization of Fiber-Matrix Interphasial Properties in Ceramic Matrix Composites

Section: Interfaces

Y.-C. Chu, Ohio State University
S. I. Rokhlin, Ohio State University

La Jolla, CA

12:00 AM

Ultrasonic Determination of the Elastic Properties of Unidirectional Composites

Section: Composite Properties

Ajit K. Mal, University of California, Los Angeles
Shyh-Shiuh Lih, University of California, Los Angeles
Yoseph Bar-Cohen, California Institute of Technology

La Jolla, CA

12:00 AM

Ultrasonic Evaluation of Interfacial Properties in Adhesive Joints: Evaluation of Environmental Degradation

Section: Bonded Joints

S. I. Rokhlin, Ohio State University
B. Li, Ohio State University
A. I. Lavrentyev, Ohio State University

La Jolla, CA

12:00 AM

Ultrasonic Evaluation of Interfacial Properties in Layered Substrate

Section: Interfaces

Ray T. Ko, Ohio State University
Sung D. Kwon, Ohio State University
Laszlo Adler, Ohio State University

La Jolla, CA

12:00 AM

Ultrasonic Inspection of Thin Walled Composite Tubes

Section: Composite Defects

Thomas E. Michaels, Panametrics, Inc.
T. M. Krafchak, Syracuse University
B. D. Davidson, Syracuse University

La Jolla, CA

12:00 AM

Ultrasonic Methods for Detection of Micro Porosity in Composite Materials

Section: Composite Properties

Jennifer E. Michaels, Panametrics, Inc.
Thomas E. Michaels, Panametrics, Inc.
Staffan Jonsson, Panametrics, Inc.

La Jolla, CA

12:00 AM

Ultrasonic NDE of Adhesive Bonds: The Inverse Problem

Section: Bonded Joints

V. R. Iyer, Texas A&M University
V. K. Kinra, Texas A&M University

La Jolla, CA

12:00 AM

Ultrasonic NDE of Adhesive Metal to Metal Bond Integrity Based on a Combined Numerical and Expert System Approach

Section: Bonded Joints

Reinhold Ludwig, Worcester Polytechnic Institute
John M. Sullivan Jr., Worcester Polytechnic Institute
Dacheng Dai, Worcester Polytechnic Institute

La Jolla, CA

12:00 AM

Ultrasonic Plate Waves in 3-D Braided Composites

Section: Composite Properties

Dale E. Chimenti, Johns Hopkins University
Adnan H. Nayfeh, University of Cincinnati

La Jolla, CA

12:00 AM

Ultrasonic Scans Using Low Frequency Unresolved Echoes

Section: Bonded Joints

D. K. Hsu, Iowa State University
M. S. Hughes, Iowa State University
T. C. Patton, Iowa State University

La Jolla, CA

12:00 AM

Ultrasonic Wave Propagation Studies in Anisotropic Plates with built-In Material Degratdation

Section: Composite Defects

Krishnan Balasubramaniam, Mississippi State University
Camille A. Issa, Mississippi State University
Satyanarayana Alluri, Mississippi State University

La Jolla, CA

12:00 AM

Ultrasonics in Thick Anisotropic Materials

Section: Composite Properties

Eric S. Boltz, Johns Hopkins University
Robert E. Green Jr., Johns Hopkins University

La Jolla, CA

12:00 AM

Ultrasound for Fiber Fragmentation Size Determination to Characterize Load Transfer Behavior of Matrix-Fiber Interface in Metal Matrix Composites

Section: Interfaces

Prasanna Karpur, University of Dayton
Theodore E. Matikas, United States Department of Defense
S. Krishnamurthy, Universal Energy Systems, Inc.
N. Ashbaugh, University of Dayton

La Jolla, CA

12:00 AM

Validation at Lower Frequencies of the Effective Elastic Constants Measurements for Orthotropic Composite Materials

Section: Composite Properties

Bernard Hosten, Université de Bordeaux I
Michel Castaings, Université de Bordeaux I

La Jolla, CA

12:00 AM

Validity of Different Models of Interfaces in Adhesion and Diffusion Bonded Joints

Section: Bonded Joints

Tom Pialucha, Imperial College
Michael Lowe, Imperial College
Peter Cawley, Imperial College

La Jolla, CA

12:00 AM