Browsing by Author "Stephenson, David J."

Browsing by Author "Stephenson, David J."

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  • Abrasive machining with MQSL. 
    Morris, Tom (Cranfield University, 2011-07)
    Grinding and polishing of engineered components are critical aspects of the precision manufacturing of high performance, quality assured products. Elevated process temperatures, however, are a common and for the most ...
  • The application of electrolytic in -process dressing to precision grinding processes 
    Zervos, Charilaos (2007-06)
    Electrolytic In-Process Dressing (ELID) has attracted a lot of attention in recent years as it is a promising method of grinding a wide range of materials, including ones that are difficult to machine, to high quality ...
  • Application of response surface methodology for the optimisation of micro friction surfacing process 
    Vitanov, V. I.; Javaid, N.; Stephenson, David J. (Elsevier Science B.V., Amsterdam., 2010-08-15)
    The aim of this work is to identify relationships between the input variables and the process response and to develop predictive models that can be used in the design of new friction surfacing applications. Moreover to ...
  • Burn threshold prediction for high efficiency deep grinding 
    Bell, Andrew John; Jin, T.; Stephenson, David J. (2011-06-01)
    Burn threshold diagrams are useful for the prediction of thermally induced grinding damage and were originally developed to describe the conventional shallow cut grinding regime. With the development of new high stock ...
  • Burn threshold prediction for high efficiency deep grinding 
    Bell, Andrew; Jin, T.; Stephenson, David J. (Elsevier, 2006)
    Burn threshold diagrams are useful for the prediction of thermally induced grinding damage and were originally developed to describe the conventional shallow cut grinding regime. With the development of new high stock ...
  • Controlled porosity alumina structures for ultra-precision hydrostatic journal bearings 
    Durazo-Cardenas, Isidro; Stephenson, David J.; Corbett, John (Blackwell Publishing Ltd., 2010-11-04)
    A series of fine-grade alumina powders has been used in combination with maize starch granules to produce porous structures for porous hydrostatic journal- bearing applications. A comprehensive series of tests was conducted ...
  • Critical study of high efficiency deep grinding 
    Johnstone, lain (Cranfield University, 2002)
    The recent years, the aerospace industry in particular has embraced and actively pursued the development of stronger high performance materials, namely nickel based superalloys and hardwearing steels. This has resulted ...
  • The design and manufacture of biomedical surfaces 
    Ramsden, Jeremy J.; Allen, David M.; Stephenson, David J.; Alcock, Jeffrey R.; Peggs, G. N.; Fuller, G. D.; Goch, G. (Technische Rundschau, Hallwag Publishers; 1999, 2007-08-01)
    Surfaces are the primary place of contact between a biomaterial and its host organism. Typically, prostheses have to fulfil demanding structural and mechanical requirements, yet the material best for those functions may ...
  • Determining the onset of grinding burn using Magnetic Barkhausen Noise 
    Opoku, Kevin S (Cranfield University, 2005)
    A study of the quick non-destructive technique of Magnetic Barkhausen Noise (MBN) in detecting the onset of grinding burn in the absence of any microstructural changes during grinding has been undertaken. 51CrV4 Steel ...
  • Development of porous ceramic air bearings 
    Roach, Christopher James (Cranfield University, 2001-02)
    Porous air bearings enjoy some important advantages over conventional air bearing types such as increased load carrying capacity, higher stiffness and improved damping. However, these types of bearings have yet to ...
  • Development of porous-ceramic hydrostatic bearings 
    Durazo-Cardenas, Isidro (Cranfield University, 2003-10)
    Porous-ceramic hydrostatic bearings have been recently developed. These bearings have demonstrated an exceptional overall performance when compared with conventional technology bearings. However, despite all the benefits, ...
  • Electrolytic in-process dressing superfinishing of spherical bearings using metal-resin bond ultra-fine CBN wheels 
    Raffles, Mark H.; Stephenson, David J.; Shore, Paul; Jin, T. (Professional Engineering Publishing, 2011-01-01)
    The use of electrolytic in-process dressing (ELID) superfinishing has been investigated with the aim of substantially improving surface finish on spherical bearing balls as well as reducing process times. Using ELID in ...
  • Elid superfinishing of spherical bearings 
    Raffles, Mark H. (Cranfield University, 2007)
    Driven by a requirement to extend the lifespan of self-aligning lined spherical bearings, this research investigates the use of Elid (electrolytic in-process dressing) as a method of improving ball surface finish. Elid ...
  • Erosion - corrosion modelling of materials used in petroleum production 
    Hamzah, Razali Bin (Cranfield University, 1994-09)
    Experimental erosion/corrosion modelling was performed on C-Mn steels and corrosion resistant alloys commonly used in petroleum production. A graded commercial sand of 50-30b pm size range, similar to sands produced ...
  • Grinding processes and their effects on surface integrity 
    Comley, Paul (Cranfield University, 2005-03)
    The introduction of high performance grinding machines in combination with the latest superabrasive technology has the potential to impact significantly on existing process chains. The aim of the research was to look at ...
  • The impact of tool performance on micromachining capability 
    Zdebski, Daniel (Cranfield University, 2012-06)
    Micro-milling represents a versatile and fast manufacturing process suitable for production of fully 3D micro-components. Such components are demanded for a vast number of industrial applications including safety systems, ...
  • Investigation into the grinding of titanium alloys 
    Wang, S. H. (Cranfield University, 2000-07)
    Titanium alloys are used extensively in the aerospace industry due to their high specific strength and excellent corrosion resistance. However, their poor thermal conductivity and high chemical reactivity with tool ...
  • Machining of Optical Surfaces in Brittle Materials using an Ultra-Precision Machine Tool 
    Shore, Paul (Cranfield University, 1995-03)
    Investigations of machining optical surfaces into brittle materials using an ultra precision machine tool are presented. The newly developed ultra precision NION machine is evaluated to gain a good appreciation of its ...
  • Machining surfaces of optical quality by hard turning 
    Knuefermann, Markus M. W. (Cranfield UniversitySchool of Industrial and Manufacturing Science, 2003-11)
    The main aim of this work was the machining by hard turning of surfaces with optical surface quality. A numerical target had been set as a surface roughness Ra = 10nm. It has been shown that achieving roughness of that ...
  • The Mechanism of Dross Formation on Aluminium and Aluminium Magnesium Alloys 
    Impey, S. A. (Cranfield University, 1989-12)
    Metal loss is an unavoidable consequence of the large scale melting of aluminium and its alloys. The objective of such processing must be to minimise losses, both from an economic viewpoint and to ensure optimum quality ...