- Author
-
Sansalone, M.
|
Carino, N. J.
- Title
- Impact-Echo: A Method for Flaw Detection in Concrete Using Transient Stress Waves.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Report
-
NBSIR 86-3452
September 1986
- Distribution
- Available from National Technical Information Service
- Keywords
-
nondestructive tests; concretes; finite element analysis; greens function; stress waves; plates (structural members)
- Identifiers
- flaw detection
- Abstract
- The report covers a nondestructive test method for heterogeneous solids. Analytical, numerical, and laboratory studies of transient stress wave propagation in plain plates and in plates containing flaws are presented. The test method involves introducing transient stress waves into a test object by mechanical point impact and monitoring reflections of the waves from internal defects and external boundaries using a point receiver.