Accession Number : ADA309964

Title :   Evaluation of Energy Absorption of New Concepts of Aircraft Composite Subfloor Intersections.

Descriptive Note : Technical paper,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Jones, Lisa E. ; Carden, Huey D.

PDF Url : ADA309964

Report Date : NOV 1989

Pagination or Media Count : 33

Abstract : Forty-one composite specimens of aircraft subfloor intersections were tested to determine the effects of geometry and material on the energy absorbing behavior, failure characteristics, and postcrush structural integrity of the specimens. The intersections were constructed of 12-ply (+ OR - 456) laminates of either Kevlar 49/934 or AS-4/934 graphite epoxy in heights of 4, 8, and 12 in. The geometry of the specimens varied in the designs of the intersection attachment angle. Four different geometries were tested.

Descriptors :   *MILITARY AIRCRAFT, *POLYAMIDE PLASTICS, *GRAPHITE EPOXY COMPOSITES, *ENERGY ABSORBERS, *CRASHWORTHINESS, LOAD DISTRIBUTION, COMPOSITE MATERIALS, LAMINATES, FLOORS, DEFLECTION, COMPOSITE STRUCTURES, STRENGTH(MECHANICS), ALUMINUM, BUCKLING, PREPREGS, FAILURE(MECHANICS), CRUSHING, CRUCIFORM CONFIGURATIONS, STRUCTURAL INTEGRITY.

Subject Categories : Aircraft
      Laminates and Composite Materials
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE