Browsing by Author "Lockett, Helen L."

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 ...

A rapid product development environment for post-graduate student aircraft design projects

Lockett, Helen L.; Fielding, John (2005-10-27)

Post-graduate education in aircraft design needs to prepare students for their future roles as professional engineers in the aerospace industry. A key requirement from industry is for students to learn how to deal with ...

System-in-use methodology : a methodology to generate conceptual PSS (Product-Service Systems) and conventional designs using systems-in-use data

Hussain, Romana (Cranfield University, 2013-03)

Industries want to add value to their offerings but to do this, rather than just accepting customer requirements, they now need to know how their products and/or services have been embedded within their customer’s process ...

Using requirement-functional-logical-physical models to support early assembly process planning for complex aircraft systems integration

Li, Tao; Lockett, Helen L.; Lawson, Craig (Elsevier, 2020-01-10)

The assembly line process planning connects product design and manufacturing through translating design information to assembly integration sequence. The assembly integration sequence defines the aircraft system components ...

A value-centric decision making framework for maintenance services outsourcing

Toossi, Amir (Cranfield University, 2011-12)

The shift in mindset of decision makers, from maintenance being a “necessary evil” and “cost centre” to a “profit contributor” in manufacturing companies has driven outsourced maintenance suppliers to employ value-centric ...

Browsing by Author "Lockett, Helen L."

Browsing by Author "Lockett, Helen L."

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