Accession Number:

AD0745358

Title:

Wave Propagation Fiber Reinforced Materials.

Descriptive Note:

Final technical rept. 1 Oct 70-1 Jun 72,

Corporate Author:

TEL-AVIV UNIV (ISRAEL) SCHOOL OF ENGINEERING

Personal Author(s):

• Weitsman,Yechiel

Report Date:

1972-04-01

Pagination or Media Count:

102.0

Abstract:

This paper discusses the propagation of elastic waves in materials reinforced by inextensible fibers. Slowness surfaces, energy fluxes and directions of propagation are determined and expressed in terms of material properties and fiber directions. The case of two domains of fiber-reinforced materials, similar in all respects except for fiber direction, and bonded together at a plane interface, is considered in detail. The misalignment in fiber directions that occurs at the bonded interface is shown to cause a significant scattering of mechanical energy. The range of validity of the mathematical model employed in this paper is indicated, and it is shown that the results may be useful in practical cases. The existance of surface waves is also discussed. Author, modified-PL

Descriptors:

• (*COMPOSITE MATERIALS
• MECHANICAL WAVES)
• MECHANICAL PROPERTIES
• WAVE PROPAGATION
• REINFORCING MATERIALS
• FIBERS
• SCATTERING
• ISRAEL

Subject Categories:

• Laminates and Composite Materials
• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE