Damage resistance of aricraft wing structure using low cost carbon fibre composite materials

Simple item page
dc.contributor.advisorMills, Andrew
dc.contributor.authorZhu, Lingang
dc.date.accessioned2012-12-19T12:08:37Z
dc.date.available2012-12-19T12:08:37Z
dc.date.issued2010-12
dc.description.abstractThis thesis investigated the damage resistance of aircraft wing structure using low cost carbon fibre composites. Experiments had been carried out to investigate their impact behaviour, damage characteristics and residual compression strength. Current aircraft pre-impregnated materials processed by autoclave moulding and also some low-cost fibre preforms using vacuum infusion moulding were compared in this research. Novel tufting technology and veils were taken into consideration to find a cost-efficient method of improving the damage resistance of carbon fibre panels. Initial damage was induced using a falling weight (2.38Kg) apparatus mounting a 16mm hemispherical tip. Various energy levels were applied for different panels, but the energy to thickness ratio was constant. Visual inspection and ultrasonic C-scans were carried out to investigate both exterior and interior damage (fibre fracture, delamination, etc.). Micrographs of the cross-section through the impact point were employed to characterise the fracture mechanisms. The detailed Compression After Impact (CAI) procedure was recorded and presented in this thesis. In order to investigate how much ultimate compression strength was reduced by impact, plain compression strength was also measured. The behaviour of different materials, including damage size, damage shape and construction and residual compression strength were utilised in comparing the different effects on impact of different components such as fibre, fabric, interleaving of toughening layers and through thickness reinforcement. The results show that unidirectional fibre was more sensitive than woven fibre and that tufting and veils were the most affordable and efficient methods to improve the damage resistance of the laminates studied. Over 30% increase in residual compression strength was achieved via these methods.en_UK
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/7715
dc.language.isoenen_UK
dc.publisherCranfield Universityen_UK
dc.rights© Cranfield University 2009. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright holder.en_UK
dc.subjectCarbon Fibreen_UK
dc.subjectCompositeen_UK
dc.subjectAircraften_UK
dc.subjectImpacten_UK
dc.subjectDamageen_UK
dc.subjectTurftingen_UK
dc.subjectInterleavingen_UK
dc.subjectVeilen_UK
dc.subjectToughened resinen_UK
dc.subjectCAIen_UK
dc.subjectFibre fractureen_UK
dc.subjectC-scanen_UK
dc.subjectDalaminationen_UK
dc.subjectMechanismen_UK
dc.titleDamage resistance of aricraft wing structure using low cost carbon fibre composite materialsen_UK
dc.typeThesis or dissertationen_UK
dc.type.qualificationlevelMastersen_UK
dc.type.qualificationnameMSc by Researchen_UK

Files

Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
Lingang_Zhu_Thesis_2011.pdf
Size:
21.3 MB
Format:
Adobe Portable Document Format
Download
Thumbnail Image
Name:
Lingang_Zhu_Thesis_2011-Appendix.pdf
Size:
71.09 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.79 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

PhD, EngD, MPhil and MSc by research theses (SAS)