Browsing by Author "Alcock, Jeffrey R."

Browsing by Author "Alcock, Jeffrey R."

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  • Optimising oscillatory positive expiratory pressure devices for effective airway clearance 
    Khasawneh, Mohammad (2016-12)
    Oscillatory positive expiratory pressure (OPEP) devices are a form of airway clearance techniques that are wildly used in the clinical practice and well accepted by patients. Clinicians and respiratory therapists are ...
  • Optimising process conditions for multiple quality criteria in micro-injection moulding 
    Attia, Usama M.; Alcock, Jeffrey R. (Springer Science Business Media, 2010-09-30)
    This paper presents a statistical technique to optimise process conditions for multiple quality criteria in micro-injection moulding. A sample hierarchical component with micro-features was replicated where it was required ...
  • Part mass and shrinkage in micro injection moulding: statistical based optimisation using multiple quality criteria 
    Annicchiarico, Daniele; Attia, Usama M.; Alcock, Jeffrey R. (Elsevier Science B.V., Amsterdam., 2013-09-30)
    Purpose: The aim of this paper is to optimise process conditions in micro injection moulding (m-IM) to minimise shrinkage whilst maximising part mass. Method: A Design of Experiment (DoE) approach was implemented for ...
  • Porous, functionally gradient pyroelectric materials 
    Shaw, Christopher P.; Whatmore, Roger W.; Alcock, Jeffrey R. (Blackwell Publishing, 2007-01)
    Properties of a new type of pyroelectric ceramic structure containing a layer of known porosity laminated between two dense layers, to form a functionally gradient material (FGM), are reported. The combination of theoretical ...
  • Powder co-injection moulding 
    Hanson, S. M. J. (Cranfield University, 2000-09)
    A novel powder processing technique has been developed by combining conventional powder injection moulding with polymer co-injection moulding, to permit the in-situ surface engineering of metal or ceramic components as ...
  • Preparation of sub-micron PZT particles with the sol-gel technique 
    Linardos, S.; Zhang, Qi; Alcock, Jeffrey R. (Elsevier, 2006)
    This paper describes the production of Pb1.0Zr0.9Ti0.1 ceramic powder, by using metal organic precursors as starting materials. In this study polyvinylpyrrolidone, PVP, was used to create a PZT–PVP sol and then also added ...
  • A process chain for integrating microfluidic interconnection elements by micro- overmoulding of thermoplastic elastomers 
    Attia, Usama M.; Alcock, Jeffrey R. (Institute of Physics Publishing; 1999, 2010-04-14)
    This paper presents a process chain for in-line integration of microfluidic interconnection elements by a variant of micro-injection moulding (mu IM). A SEBS-based thermoplastic elastomer (TPE) was moulded over ...
  • A product-service system approach to telehealth application design 
    Flores-Vaquero, Paul; Tiwari, Ashutosh; Alcock, Jeffrey R.; Hutabarat, Windo; Turner, Christopher J. (SAGE, 2016-06-30)
    A considerable proportion of current point-of-care devices do not offer a wide enough set of capabilities if they are to function in any telehealth system. There is a need for intermediate devices that lie between healthcare ...
  • Product-Service Systems across Industry Sectors: Future Research Needs and Challenges 
    Durugbo, Christopher; Bankole, O. O.; Erkoyuncu, John Ahmet; Tiwari, Ashutosh; Alcock, Jeffrey R.; Roy, Rajkumar; Shehab, Essam (2010-04-15)
    This paper explores the current research in Product-Service Systems (PSS) across various industries suchas industrials, basic materials, utilities, and financials, based on the Industry Classification Benchmark (ICB).PSS ...
  • Product-service systems in health care: case study of a drug-device combination 
    Mittermeyer, Stephan A.; Njuguna, James A. K.; Alcock, Jeffrey R. (Springer Science Business Media, 2011-02-28)
    Although often mentioned as an area in which product-service systems (PSS) possess great potential, the health care sector has not been in the focus of research in the past. This paper briefly reviews the challenges and ...
  • Pyroelectric ceramics and thin films for applications in uncooled infra-red sensor arrays 
    Whatmore, Roger W.; Zhang, Qi; Shaw, Christopher P.; Dorey, Robert A.; Alcock, Jeffrey R. (Royal Swedish Academy of Sciences, 2007-11-22)
    Pyroelectric infra-red detector arrays provide an attractive solution to the problem of collecting spatial information in the far IR. They are only sensitive to changes in the IR flux and are well suited to sensing ...
  • Reconfigurable micro-mould for the manufacture of truly 3D polymer microfluidic devices 
    Marson, Silvia; Attia, Usama M.; Allen, David M.; Tipler, P.; Jin, T.; Hedge, J.; Alcock, Jeffrey R. (Cranfield University, 2009-03-31)
    This paper concerns the concept, the design and the manufacturing steps for the fabrication of a precision mould for micro-injection moulding of truly three dimensional microfluidic devices. The mould was designed using ...
  • A review of information flow diagrammatic models for product-service systems 
    Durugbo, Christopher; Tiwari, Ashutosh; Alcock, Jeffrey R. (Springer Science Business Media, 2011-02-28)
    A product-service system (PSS) is a combination of products and services to create value for both customers and manufacturers. Modelling a PSS based on function orientation offers a useful way to distinguish system inputs ...
  • A review of micro-powder injection moulding as a microfabrication technique 
    Attia, Usama M.; Alcock, Jeffrey R. (Institute of Physics Publishing; 1999, 2011-03-01)
    Micro-powder injection moulding (µPIM) is a fast-developing micro-manufacturing technique for the production of metal and ceramic components. Shape complexity, dimensional accuracy, replication fidelity, material variety ...
  • The selection and application of design methodologies for the design of bone tissue scaffolds 
    Blogg, Ken (Cranfield University, 2013-01)
    Research motivation: Bone tissue scaffolds offer a way forward in a strategy to change from tissue replacement to tissue regeneration. Bone tissue scaffolds are a combination of a physical construct, with clearly defined ...
  • Service delivery for microsystems production: A study 
    Durugbo, Christopher; Tiwari, Ashutosh; Alcock, Jeffrey R. (Elsevier Science Business Media, 2012-01-26)
    This paper presents the findings of an investigation into the industry practice of service delivery within microsystems technologies (MST) (also known as micro- electro-mechanical systems, MEMS) production. A study was ...
  • Service-oriented design of microfludic devices 
    Panikowska, Katarzyna E. (Cranfield University, 2011-01)
    Microfluidics is a relatively new and, with an estimation of the market for these devices exceeding $ 3 billion in 2014, it is considered a profitable domain. Constant development of new technologies and growing demand ...
  • Steps towards ceramic process scale-up: analysis of a laboratory process 
    Mortara, L.; Navarro, A.; Whatmore, Roger W.; Alcock, Jeffrey R. (Elsevier Science B.V., Amsterdam., 2004-01-01)
    In this paper the first steps towards a scaling up of a ceramic process are described, using as case study a lab-scale process, in which PZT ceramics are produced via an aqueous tape casting route. The process, the result ...
  • Study of blood flow behavior in microchannels 
    Marson, Silvia; Benade, M.; Attia, Usama M.; Allen, David M.; Kersaudy, Kerhoas M.; Hedge, J.; Morgan, S. L.; Larcombe, L. D.; Alcock, Jeffrey R. (2008-06-01)
    Microfluidic (also known as lab-on-a-chip) devices offer the capability ofmanipulating very low volumes of fluids (of the order of micro litres) for severalapplications including medical diagnostics. This property ...
  • Survey of media forms and information flow models in microsystems companies 
    Durugbo, Christopher; Tiwari, Ashutosh; Alcock, Jeffrey R. (2010-02-22)
    The paper presents the findings of a survey of 40 microsystems companies that was carried out to determine the use and the purpose of use of media forms and information flow models within these companies. These companies ...