Optimise repair strategy selection and repair knowledge sharing to support aero engine design.

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dc.contributor.advisorXu, Yuchun
dc.contributor.advisorStarr, Andrew
dc.contributor.authorKhan, Atif M.
dc.date.accessioned2023-09-13T12:53:09Z
dc.date.available2023-09-13T12:53:09Z
dc.date.issued2015-11
dc.description.abstractRecent growth in aviation industry, large civil jet engines OEMs (Original Equipment Manufacturer) and MROs ((Maintenance, Repair and overhaul)) have emphasised on decreased profits, poor technology selections and maintenance focused design. This has generated service based approach in their selling, offering all customers’ requirements, known as servitisation. The servitisation has increased profits but did not solve the challenges of poor technology selection and design. The difficulties involved within servitisation entails rationalised decision making often with high risk and very limited information. This thesis assesses the most suitable Multi-criteria decision making (MCDM) in concurrence with OEMs and MRO focus groups that recognises the industrial requirements and proposed a novel selection method which is an AHP algorithm based on MCDM in efforts to address business KPIs in aero engine servitisation. This AHP algorithm based MCDM develops an optimised repair process/technology selection framework which is called ORSS (Optimised Repair Selection Strategy). The ORSS applies the business KPIs (Quality Cost Delivery) as a selection criteria combined with the repair engineer's requirements and expert's evaluation of processes/technologies based on a component and its damage-mode to provide the optimised repair process/technology selection that also compliments the components lifecycle repair strategy. A structured knowledge sharing framework has also been developed. This consists of the information that the designers can update to help repair teams to become more effective and efficient in repair and services critical information tasks. These frameworks were validated successfully by experts within the design, repair and service teams at Rolls Royce. These frameworks have shown high levels of improvements in repair process selection and the key knowledge sharing for designs.en_UK
dc.description.coursenamePhD in Manufacturingen_UK
dc.description.sponsorshipEngineering and Physical Sciences (EPSRC)en_UK
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20207
dc.language.isoenen_UK
dc.publisherCranfield Universityen_UK
dc.publisher.departmentSATMen_UK
dc.rights© Cranfield University, 2015. All rights reserved. No part of this publication may be reproduced without the written permission of the copyright holder.en_UK
dc.subjectRepair processen_UK
dc.subjectgas turbine componentsen_UK
dc.subjectoptimisationen_UK
dc.subjecthybrid AHPen_UK
dc.subjectaero-engine components repairen_UK
dc.subjectknowledge feedbacken_UK
dc.titleOptimise repair strategy selection and repair knowledge sharing to support aero engine design.en_UK
dc.typeThesis or dissertationen_UK
dc.type.qualificationlevelDoctoralen_UK
dc.type.qualificationnamePhDen_UK

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PhD, EngD and MSc by research theses (SATM)