Overview
- Editors:
-
-
Donald O. Thompson
-
Center for NDE Ames Laboratory (USDOE) and Department of Aerospace Engineering and Engineering Mechanics, Iowa State University, Ames, USA
-
Dale E. Chimenti
-
Center for NDE and Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, USA
Access this book
Other ways to access
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.
Similar content being viewed by others
Table of contents (147 chapters)
-
-
- J. T. Fanton, A. Kapitulnik, B. T. Khuri-Yakub, G. S. Kino
Pages 1143-1149
-
- G. Chang, R. B. Givens, J. W. M. Spicer, J. C. Murphy
Pages 1151-1157
-
- H. N. G. Wadley, K. P. Dharmasena, H. S. Goldberg
Pages 1159-1166
-
-
-
- C-H. Chou, B. T. Khuri-Yakub
Pages 1179-1186
-
- C. G. Welles, A. Bivas, W. Lee Smith, Allan Rosencwaig
Pages 1187-1191
-
- J. W. Maclachlan Spicer, W. D. Kerns, L. C. Aamodt, J. C. Murphy
Pages 1193-1200
-
- L. D. Favro, H. J. **, T. Ahmed, X. Wang, P. K. Kuo, R. L. Thomas
Pages 1201-1206
-
- Graham H. Thomas, Susan L. Crawford
Pages 1207-1214
-
- N. Gopalsami, S. L. Dieckman, W. A. Ellingson, R. E. Botto, H. Yeh
Pages 1215-1222
-
- C. P. Hsieh, C-H. Chou, B. T. Khuri-Yakub
Pages 1223-1230
-
- K. A. Murphy, C. Koob, M. Miller, S. Feth, R. O. Claus
Pages 1231-1237
-
- Jeffrey S. Schoenwald, Ross H. Messinger
Pages 1239-1245
-
-
- A. Caner Demirdogen, J. Richard Houghton, Andrew K. Tay, Dale A. Wilson, R. Lee Wood
Pages 1259-1266
-
- R. T. Harrold, Z. N. Sanjana
Pages 1267-1272
-
-
Editors and Affiliations
-
Center for NDE Ames Laboratory (USDOE) and Department of Aerospace Engineering and Engineering Mechanics, Iowa State University, Ames, USA
Donald O. Thompson
-
Center for NDE and Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, USA
Dale E. Chimenti