Advanced Durability and Damage Tolerance Design and Analysis Methods for Composite Structures
Advanced Durability and Damage Tolerance Design and Analysis Methods for Composite Structures

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-08-27

Total Pages: 36

ISBN-13: 9781726176620

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Aerospace vehicles are designed to be durable and damage tolerant. Durability is largely an economic life-cycle design consideration whereas damage tolerance directly addresses the structural airworthiness (safety) of the vehicle. However, both durability and damage tolerance design methodologies must address the deleterious effects of changes in material properties and the initiation and growth of microstructural damage that may occur during the service lifetime of the vehicle. Durability and damage tolerance design and certification requirements are addressed for commercial transport aircraft and NASA manned spacecraft systems. The state-of-the-art in advanced design and analysis methods is illustrated by discussing the results of several recently completed NASA technology development programs. These programs include the NASA Advanced Subsonic Technology Program demonstrating technologies for large transport aircraft and the X-33 hypersonic test vehicle demonstrating technologies for a single-stage-to-orbit space launch vehicle.Harris, Charles E. and Starnes, James H., Jr. and Shuart, Mark J.Langley Research CenterAIRCRAFT RELIABILITY; DAMAGE; DESIGN ANALYSIS; MICROSTRUCTURE; LIFE (DURABILITY); AEROSPACE VEHICLES; CERTIFICATION; COMMERCIAL AIRCRAFT; ECONOMICS; HYPERSONIC VEHICLES; X-33 REUSABLE LAUNCH VEHICLE...

Damage Tolerance in Advanced Composites
Damage Tolerance in Advanced Composites

Author: Golam Newaz

Publisher: Routledge

Published: 2018-12-13

Total Pages: 169

ISBN-13: 1351456717

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This recent book provides a detailed presentation of damage tolerance assessment and characterization methods for advanced composites, as well as an examination of the role of damage tolerance in the design of composites. Included are analytical models for different types of damage in different composite materials. Tables provide helpful reference

Advanced Technology Composite Fuselage-Structural Performance
Advanced Technology Composite Fuselage-Structural Performance

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-07-17

Total Pages: 102

ISBN-13: 9781722925130

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Boeing is studying the technologies associated with the application of composite materials to commercial transport fuselage structure under the NASA-sponsored contracts for Advanced Technology Composite Aircraft Structures (ATCAS) and Materials Development Omnibus Contract (MDOC). This report addresses the program activities related to structural performance of the selected concepts, including both the design development and subsequent detailed evaluation. Design criteria were developed to ensure compliance with regulatory requirements and typical company objectives. Accurate analysis methods were selected and/or developed where practical, and conservative approaches were used where significant approximations were necessary. Design sizing activities supported subsequent development by providing representative design configurations for structural evaluation and by identifying the critical performance issues. Significant program efforts were directed towards assessing structural performance predictive capability. The structural database collected to perform this assessment was intimately linked to the manufacturing scale-up activities to ensure inclusion of manufacturing-induced performance traits. Mechanical tests were conducted to support the development and critical evaluation of analysis methods addressing internal loads, stability, ultimate strength, attachment and splice strength, and damage tolerance. Unresolved aspects of these performance issues were identified as part of the assessments, providing direction for future development. Walker, T. H. and Minguet, P. J. and Flynn, B. W. and Carbery, D. J. and Swanson, G. D. and Ilcewicz, L. B. Langley Research Center COMPOSITE STRUCTURES; FUSELAGES; TRANSPORT AIRCRAFT; STRUCTURAL DESIGN; PERFORMANCE PREDICTION; COMPOSITE MATERIALS; MANUFACTURING; DATA BASES; STRUCTURAL FAILURE; DAMAGE ASSESSMENT; LOADS (FORCES); AEROELASTICITY; TOLERANCES (MECHANICS); DESIGN ANALYSIS; PREDICTION ANALYSIS TECHNIQUES; STABILITY...