Accession Number : ADA303099

Title :   Shear Diffusion in Sandwich Specimens Having Glass Reinforced Plastic Face Plates with Paper Honeycomb Cores,

Corporate Author : BRISTOL UNIV (UNITED KINGDOM) DEPT OF AERONAUTICAL ENGINEERING

Personal Author(s) : Mustapha, A. M. ; Liew, C. K.

PDF Url : ADA303099

Report Date : JUN 1981

Pagination or Media Count : 50

Abstract : This project is an investigation into the behaviour of a glass reinforced plastic (GRP) strap used to join the face plates of two separate GRP skinned, paper honeycomb sandwich specimens, subjected to tensile loads of up to 1.5 kN. Results from the tests indicate that strap length and thickness taper of the strap influences the load diffusion process. Specimen length was found to have very little effect. The theoretical model developed gave good but conservative correlation with the experimental results. Moduli of the specimen found from three point bending tests are Young's modulus of the face plates = 15000 N/sq mm; and shear modulus of the core = 10 N/sq mm. The paper honeycomb core used had a thickness of 8.8 mm with 1/8 inch cell size. The average thickness of each face plate was 0.5 mm. (MM)

Descriptors :   *PLASTICS, *GLASS REINFORCED PLASTICS, SHEAR PROPERTIES, THICKNESS, AIRCRAFT, LAMINATES, SHEAR MODULUS, MODULUS OF ELASTICITY, BENDING, FAILURE(MECHANICS), REMOTELY PILOTED VEHICLES, TENSILE TESTERS, SANDWICH CONSTRUCTION, HONEYCOMB CORES, FACEPLATES.

Subject Categories : Laminates and Composite Materials
      Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE