Accession Number : ADA180989
Title : Structural Materials in Aeronautics: Prospects and Perspectives.
Descriptive Note : Technical rept.,
Corporate Author : ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)
Personal Author(s) : Pope,G. G .
Report Date : AUG 1985
Pagination or Media Count : 45
Abstract : Recent developments in materials and their prospects of application in airframes and engines are reviewed, with particular attention to advances made in the UK. After dealing with the technical and cost considerations that govern material selection, the merits of fibre composites (with emphasis on carbon fibre reinforced plastics), titanium alloys, steels and aluminium alloys for airframe applications are examined. The benefits offered by fibre composites must now be assessed for specific applications in relation to recent developments in aluminium alloys, notably lithium-containing alloys and in the longer term alloys and steels are expected to fulfill an important but limited role in airframes. In the engine. titanium and nickel-base allous respectively will satisfy most compressor and turbine requirements, although some usage of ceramics is expected. It is concluded that new materials will be acceptable only if a clear understanding is achieved of the relationsip between composition, microstructure and material behaviour, the manufacturing route and quality control of the product.
Descriptors : *AIRFRAMES, *ALLOYS, *REINFORCED PLASTICS, AERONAUTICS, ALUMINUM, CERAMIC MATERIALS, MICROSTRUCTURE, STEEL, COSTS, CARBON FIBERS, FIBER REINFORCED COMPOSITES, MATERIALS, SELECTION, QUALITY CONTROL, CONSTRUCTION MATERIALS, TITANIUM, AIR FORCE PROCUREMENT, AIR FLOW, AIRCRAFT MAINTENANCE, FATIGUE(MECHANICS), CRACK PROPAGATION, PROTECTIVE COATINGS, GREAT BRITAIN, TITANIUM ALLOYS, REQUIREMENTS, TURBINES
Subject Categories : Aircraft
Metallurgy and Metallography
Distribution Statement : APPROVED FOR PUBLIC RELEASE