- 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.