Accession Number : ADA181169

Title :   Interaction of Ultrasonic Waves with Composite Plates.

Descriptive Note : Annual rept.,

Corporate Author : CINCINNATI UNIV OH DEPT OF AEROSPACE ENGINEERING AND ENGINEERING MECHANICS

Personal Author(s) : Nayfeh,Adnan H

PDF Url : ADA181169

Report Date : Apr 1987

Pagination or Media Count : 21

Abstract : During the first year of our reporting period we continued our close cooperation with the NDE Branch of the Materials Lab at Wright-Patterson Air Force Base. For our research part, we continued supplying analytical and computational methods on the modeling of the mechanical behavior of fibrous composites for applications in the NDE field. Specifically, we developed theoretical models to describe the influence of fibrous composite's microstructure (both in the forms of dispersive and anisotropic effects) and its gross behaviors. This was verified experimental by using Leaky Wave propagation techniques whereas the scientific group at Wright Patterson continued conducting experimental verification of our modeling. These combined efforts contributed to an advancement of the state-of-the-art regarding the understanding for the ultimate good of developing inspection tools and methods to defects in such materials. As described below our efforts resulted in several presentations and publications in the open literature.

Descriptors :   *COMPOSITE STRUCTURES, *PLATES, *COMPOSITE MATERIALS, BEHAVIOR, COOPERATION, FIBERS, INSPECTION, INTERACTIONS, MECHANICAL PROPERTIES, MICROSTRUCTURE, MODELS, NUMERICAL METHODS AND PROCEDURES, STATE OF THE ART, THEORY, TOOLS, ULTRASONICS, WAVE PROPAGATION, WAVES

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE