- Author
- Sansalone, M. | Lin, Y. | Carino, N. J.
- Title
- Impact-Echo Response of Plates Containing Thin Layers and Voids.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- Review of Progress in Quantitative Nondestructive Evaluation. Volume 9B, Plenum Press, New York, Thompson, D. O.; Chimenti, D. E., Editors, 1935-1942 p., 1990
- Keywords
- reinforced concretes | structures | plates | thin layers | voids | impact-echo method | finite element studies | ducts
- Abstract
- An ongoing research program initiated in 1983 by Carino and Sansalone has been aimed at developing the theoretical basis and practical applications for a new nondestructive technique for detecting flaws in reinforced concrete structures. The technique, known as impact-echo, is well documented and only a brief overview of the principle of the method, signal processing techniques, and instrumentation is presented. This paper highlights the results of a recent investigation into the feasibilty of using the impact-echo technique to detect voids in plates containing thin layers of materials having different acoustic impedances.