Accession Number : ADP006815

Title :   Garteur Compression Behaviour of Advanced CFRP,

Corporate Author : NATIONAL AEROSPACE LAB AMSTERDAM (NETHERLANDS)

Personal Author(s) : Hart, G. ; Aoki, R. ; Brookholt, H. ; Curtis, P. T. ; Krober, I.

Report Date : APR 1992

Pagination or Media Count : 6

Abstract : The susceptibility of currently used CFRP to impact has stimulated the development of improved Composites. This new generation of composites usually shows increased toughness and damage tolerance as well as improved tensile performance. This is generally not matched, however, by a similar improvement in compressive properties which then becomes a limiting design factor. For improvement of the compressive strength a better understanding of the compressive failure behaviour is needed. This aspect is part of a cooperation programme within GARTEUR. The compressive failure behaviour is being examined at the microscale level (single fibre and bundle tests) and at coupon level. For experimental verification of failure models special attention has to be paid to compressive test procedures in order to achieve optimal strength values with a minimum of scatter. To evaluate the most appropriate compression test method a Round-Robin test programme was performed on unidirectional laminates of the materials T800/6376; HTA7/982; HTA7/6376; T800/5245; T800/924; IM400/5245 and T400/6376. In the present paper the results of the Round-Robin test programme are discussed. Carbon fibre reinforced plastics, Compressive strength, Test methods.

Descriptors :   *MILITARY AIRCRAFT, *FAILURE(MECHANICS), *FIBER REINFORCED COMPOSITES, *LAMINATES, BUNDLES, CARBON, COMPRESSION, COMPRESSIVE PROPERTIES, DAMAGE, IMPACT, LAMINATES, MICROBALANCES, MODELS, PLASTICS, REINFORCED PLASTICS, TEST METHODS, TEST AND EVALUATION, TOUGHNESS, UNIDIRECTIONAL, VERIFICATION, TOLERANCES(MECHANICS), CARBON FIBERS, STRENGTH(MECHANICS), BUCKLING, STRAIN(MECHANICS), TENSILE STRENGTH, REPRINTS, NATO.

Subject Categories : Laminates and Composite Materials
      Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE