Browsing by Author "Lockett, Helen L."

Browsing by Author "Lockett, Helen L."

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  • Aircraft assembly process design for complex systems installation and test integration. 
    Li, Tao (Cranfield UniversitySATM, 2019-04)
    The assembly line planning process connects product design and manufacturing through translating design information to assembly integration sequence. The assembly integration sequence defines the aircraft system components ...
  • An aircraft design for maintainability methodology integrated with computer aided design 
    Lockett, Helen L.; Estefani, J.; Reytérou, E. (Cranfield University, 2012-11-06)
    Maintenance typically represents 10 – 25% of the direct operating cost of an aircraft and minimizing maintenance cost is therefore an important driver for aircraft design. This paper presents a methodology for Design for ...
  • Aircraft wing build philosophy change through system pre-equipping of major components 
    Judt, David M.; Forster, Kevin; Lockett, Helen L.; Lawson, Craig P.; Webb, Philip (Society of Automotive Engineers, 2016-09-27)
    In the civil aircraft industry there is a continuous drive to increase the aircraft production rate, particularly for single aisle aircraft where there is a large backlog of orders. One of the bottlenecks is the wing ...
  • An automated maintainability prediction tool integrated with Computer Aided Design 
    Lockett, Helen L.; Arvanitopoulos-Darginis, K. (Elsevier, 2017-05-09)
    Design for maintainability is an important aspect of aircraft design, with maintenance representing 10 – 25% of the direct operating cost of an aircraft [1]. Design for Maintainability incorporates many aspects including ...
  • Computational design process modelling 
    Guenov, Marin D.; Libish; Tang, Dunbing; Lockett, Helen L. (2006-12-01)
    In the conceptual design phase, relatively simple equations and functions (or compiled code) are used to describe the aircraft and to perform trade-off studies. The latter require an optimal execution sequence in order ...
  • Design for wire + arc additive manufacture: design rules and build orientation selection 
    Lockett, Helen L.; Ding, Jialuo; Williams, Stewart W.; Martina, Filomeno (Taylor & Francis, 2017-08-20)
    Wire + Arc Additive Manufacture (WAAM) is an additive manufacturing technology that can produce near net-shape parts layer by layer in an automated manner using welding technology controlled by a robot or CNC machine. WAAM ...
  • Design for wire and arc additive layer manufacture 
    Mehnen, Jorn; Ding, J.; Lockett, Helen L.; Kazanas, P. (2010-04-19)
    Additive Layer Manufacture (ALM) is a technique whereby freeform structures are produced by building up material in layers. RUAM (Ready-to-Use Additive Layer Manufacturing) is an innovative concept for building large ...
  • Digital assembly process design for aircraft systems 
    Li, Tao (Cranfield University, 2012-01)
    The research described in this thesis concentrates on the development of an integrated assembly process design for aircraft systems. Assembly process design is one of the most important and complicated activities in ...
  • Early cost estimation for additive manufacture 
    Zhai, Yun (Cranfield University, 2012-09)
    Additive Manufacture (AM) is a novel manufacturing method; it is a process of forming components by adding materials. Owing to material saving and manufacturing cost saving, more and more research has been focused on metal ...
  • Experimental investigation into aircraft system manual assembly performance under varying structural component orientations 
    Judt, David M.; Lawson, Craig; Lockett, Helen L. (SAGE, 2019-10-18)
    Installation of aircraft wing systems is a bottleneck in the assembly process. This phase is typically composed of many work packages, taking hundreds of man-hours per wing. In addition to this volume of work, tasks are ...
  • A framework to inform PSS Conceptual Design by using system-in-use data 
    Hussain, Romana; Lockett, Helen L.; Annamalai Vasantha, Gokula Vijaykumar (Elsevier Science B.V., Amsterdam., 2012-05-01)
    Both the Product-Service System (PSS) literature and industry express a need to close the design loop by using product-in-use data to inform PSS Conceptual Design. Nevertheless, how to actually accomplish this is largely ...
  • Graph-based feature recognition for injection moulding based on a mid-surface approach 
    Lockett, Helen L.; Guenov, Marin D. (Elsevier Science B.V., Amsterdam., 2005-02-01)
    This paper presents a novel CAD feature recognition approach for thin-walled injection moulded and cast parts in which moulding features are recognised from a mid-surface abstraction of the part geometry. The motivation ...
  • Hybrid design based on wire and arc additive manufacturing in the aircraft industry 
    Chen, Jian (Cranfield University, 2012-12)
    Wire and Arc Additive Manufacturing (WAAM) is a developing rapid prototyping and manufacturing technology which allows the production of large custom-made metal parts with high deposition rates, a major concern of the ...
  • An investigation into the interrelationship between aircraft systems and final assembly process design 
    Li, Tao; Lockett, Helen L. (Elsevier, 2017-05-09)
    Modern aircraft are more integrated with advanced systems functionalities, which result in ever-increasing aircraft complexity, further development difficulties and development delays. These system complexities are mostly ...
  • Investigation of a path planning solution for wire + arc additive manufacture. 
    Michel, Florent (Cranfield UniversitySATM, 2018-12)
    Wire + Arc Additive Manufacturing (WAAM) has become a crucial asset for industrial manufacturing in the field of medium to large metallic deposition thanks to its high-rate deposition of various metals, its low-cost ...
  • A knowledge based expert system for moulded part design 
    Guenov, Marin D.; Lockett, Helen L. (Design Society, 2007)
    In today's competitive market many consumer products are designed with complex curved shapes to meet customers' demands for styling and ergonomics. These styled products are commonly manufactured using moulding processes ...
  • A knowledge based manufacturing advisor for CAD 
    Lockett, Helen L. (Cranfield UniversitySchool of Engineering, 2005-07)
    This thesis presents a knowledge based manufacturing advisor for Computer Aided Design. The aim of the project has been to develop techniques that can help designers to evaluate the manufacturability of moulded parts ...
  • Maintainability prediction for aircraft mechanical components utilising aircraft feedback information 
    Wan Husain, Wan Mohd Sufian Bin (Cranfield University, 2011-09)
    The aim of this research is to propose an alternative approach to determine the maintainability prediction for aircraft components. In this research, the author looks at certain areas of the maintainability prediction ...
  • A modular path planning solution for Wire + Arc Additive Manufacturing 
    Michel, Florent; Lockett, Helen L.; Ding, Jialuo; Martina, Filomeno; Marinelli, Gianrocco; Williams, Stewart W. (Elsevier, 2019-05-11)
    Wire + Arc Additive Manufacturing (WAAM) has proven its capability to build medium to large metallic parts thanks to its high-rate deposition and its potentially unlimited build volume. Moreover, the low-cost equipment and ...
  • Product service systems and supply network relationships: an exploratory case study 
    Lockett, Helen L.; Johnson, Mark; Bastl, Marko; Evans, Stephen (MCB University Press, 2011-03-01)
    Purpose - In recent years there has been increasing interest in Product Service Systems (PSS) as a business model for selling integrated product and service offerings. To date there has been extensive research into the ...