Overview
- Editors:
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Donald O. Thompson
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Center for NDE Ames Laboratory (USDOE) and Department of Aerospace Engineering and Engineering Mechanics, Iowa State University, Ames, USA
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Dale E. Chimenti
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Center for NDE and Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, USA
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Table of contents (147 chapters)
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- William M. Visscher, Albert Migliori, Raymond D. Dixon
Pages 1289-1294
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- Peter B. Nagy, Laszlo Adler
Pages 1295-1302
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- Tom Pialucha, Peter Cawley
Pages 1303-1309
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- W. Wang, B. Li, S. I. Rokhlin
Pages 1311-1318
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- A. Jungman, Ph. Guy, A. Nayfeh, G. Quentin, J. C. Le Flour
Pages 1319-1326
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- Nader Saffari, David T. Green
Pages 1335-1342
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- E. C. Johnson, S. J. Sherman
Pages 1351-1357
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- John M. Sullivan Jr., Reinhold Ludwig, Yiping Geng, Vinod K. Nair
Pages 1359-1366
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- P. A. Howell, William P. Winfree, B. Scott Crews
Pages 1367-1374
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- Woody Wongwiwat, Robert Rizzo, Donald Rigney
Pages 1375-1382
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- G. C. Ojard, D. K. Rehbein, O. Buck, A. Bevolo
Pages 1383-1390
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- Amit K. Som, Leonard J. Bond, Kevin J. Taylor
Pages 1391-1398
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- Vinod K. Tewary, Christopher M. Fortunko
Pages 1415-1421
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- Reza Zoughi, Brian Zonnefeld
Pages 1431-1436
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About this book
The objective of this study was to increase the understanding of damage in composite materials with through-the-thickness reinforcements. As a first step it was necessary to develop new ultrasonic imaging technology to better assess internal damage of the composite. A useful ultrasonic imaging technique has been successfully developed to assess the internal damage of composite panels. The ultrasonic technique accurately determines the size of the internal damage. It was found that the ultrasonic imaging technique was better able to assess the damage in a composite panel with through-the-thickness reinforcements than by destructively sectioning the specimen and visual inspection under a microscope. Microscopic determination of crack location and lengths in a composite panel with through-the-thickness reinforcements was almost impossible. Five composite compression-after-impact panels were tested. The compression-after-impact strength of the panels with the through-the thickness reinforcements was almost twice that of the comparable panel without through-the-thickness reinforcement. REFERENCES 1. B.T. Smith, J.S. Heyman, A.M. Buoncristiani, Earl D. Blodgett, J.G. Miller, and S.M. Freeman, Correlation of the Deply TechniQue with the Ultrasonic Imaging of Impact Damage in Graphite/Epoxy Composites, Materials Evaluation, vol. 47, NO. 12, December 1989, pp 1408-1416. 2. NASA Tech Briefs, June 1987, p. 28. 3. P.M. Gammel, Improved Ultrasonic Detection using Analytic Signal Magnitude. Ultrasonics, Vol. 19, March 1981, pp 73-76. 4. R.C. Heyser, Determination of Loudspeaker Signal Arrival Times Part ~ Journal of the Audio Engineering Society, Vol. 19, Dec. 1971, pp 902-905.
Editors and Affiliations
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Center for NDE Ames Laboratory (USDOE) and Department of Aerospace Engineering and Engineering Mechanics, Iowa State University, Ames, USA
Donald O. Thompson
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Center for NDE and Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, USA
Dale E. Chimenti