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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- H. Jeong, D. K. Hsu, R. E. Shannon, P. K. Liaw
Pages 1461-1468
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- Joseph L. Rose, Yimei Huang, John J. Ditri, Dattatraya P. Dandekar, Shun-Shin Chou
Pages 1469-1476
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- Meng-Chou Wu, William H. Prosser
Pages 1477-1482
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- R. A. Kline, S. K. Sahay, E. I. Madaras
Pages 1491-1497
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- Manabu Enoki, Teruo Kishi
Pages 1499-1506
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- Robert Bratton, Subhendu Datta, Arvind Shah
Pages 1507-1514
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- A. K. Mal, C.-C. Yin, Y. Bar-Cohen
Pages 1531-1538
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- F. J. Margetan, R. B. Thompson, T. A. Gray
Pages 1539-1546
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- K. Balasubramaniam, J. L. Rose, Y. Huang, J. Eder
Pages 1547-1554
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- Yoseph Bar-Cohen, Ajit K. Mal
Pages 1555-1560
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- L. L. Coulter, J. G. Byrne
Pages 1561-1566
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- G. E. Georgeson, J. M. Nelson, R. H. Bossi, R. L. Carlsen
Pages 1567-1573
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- W. J. Murri, B. W. Sermon, R. N. Andersen, L. A. Martinez, E. J. Van der Heiden, C. A. Garner
Pages 1583-1590
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- G. F. Hawkins, P. M. Sheaffer, E. C. Johnson
Pages 1591-1597
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