In this report the transcripts of the Workshop for Quantitative Flaw Definition held at the Science Center, Rockwell International, June 17–20, 1974, are presented. Besides an introductory session which emphasizes NDE needs and costs in various branches of the NOD, three sessions are devoted to three key problem areas which are examined in some detail. These problem areas include the quantitative evaluation of flaws, the nondestructive evaluation of composites and adhesively bonded materials, and the detection of residual stresses and other failure related properties. These sessions are composed of both tutorial presentations defining both the problems and the incomplete solutions presently available, and reports of research in progress in the related areas. Group discussions associated with these presentations are also given.

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1. Front Matter

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Foreward, ARPA/AFML

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List of Attendees, ARPA/AFML

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Report Documentation Pages, ARPA/AFML

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Preface, Donald O. Thompson

2. Introductory Session

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Workshop Overview, Michael Buckley

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Economic Motivation and Potential Impact of NDE in DOD, George Darcy

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NDE Horror Stories, Lee R. Gulley Jr.

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Welcome, Terry L. Loucks

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Fracture Control for High Performance Ships and Related NDE Requirements, Hendrikus H. Vanderveldt

3. Flaw Characterization

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Advanced Magnetic Methods of Flaw Detection, John R. Barton

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State of Art NDE in Quantitative Inspection, Edward L. Caustin

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Factors Affecting Ultrasonic Waves Interacting with Fatigue Cracks, Dennis M. Corbly

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Laser-Generated Ultrasonic Beams, Michael P. Felix

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Interface Waves on Interference-Fit Fasteners, David A. Lee

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Studies of Electromagnetic Sound Generation for NDE, Thomas J. Moran

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Adaptive Nonlinear Modeling for Ultrasonic Signal Processing, Anthony N. Mucciardi

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Impulse Analysis of Ultrasonic Indicia, Paul F. Packman

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Acoustic Wave Scattering from a Sphere, Bernard R. Tittmann and E. R. Cohen

4. Strength of Bonded Materials

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Microscopic Description of Bond Strength Mechanisms and Processes, K. Lawrence DeVries and Ben A. Lloyd

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Kinetics of Moisture Degradation in Graphite-Epoxy Composites, David H. Kaelble

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Advanced Composites Status Review, Leslie M. Lackman

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Ultrasonic Procedures for Predicting Adhesive Bond Strength, Paul Meyer

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NDE Prediction of Adhesive Bond Failure Areas, Tennyson Smith

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Applicability of Ultrasonic Resonance Spectroscopy to NDE of Adhesive Bonds, William G.W. Yee

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Effects of Residual Stresses Upon Design, Fabrication and Field Service, Lynn J. Ebert

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Acoustic Emission: A Summary of Current Understanding, Anthony G. Evans

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Physical Origins of Residual Stress and Present Physical Techniques for Measurement, Paul A. Flinn

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Exo-electron Emission from Metals, Lawrence Himmel

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The Effect of Surface Roughness on the Frequency of Surface Plasmons, Edgar A. Kraut

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Acoustic Emission Study of Twinning in Indium Crystals and Lead-Tin Alloys, Robert B. Pond Sr.

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Energy Distribution of Photo-Stimulated Electron Emission from Fatigue Specimens, Fred L. Szalkowski