Browsing by Supervisor "Stephenson, David J."

Browsing by Supervisor "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 ...
  • 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 ...
  • 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, ...
  • 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 ...
  • A new powder encapsulation method and its implications on densification by hot isostatic pressing 
    Downing, M. (Cranfield University, 1993-04)
    Hot isostatic pressing is now an accepted material processing technique for the consolidation of metal powders to near-net-shape components. This thesis examines the use of coatings as in-situ envelopes to overcome the ...
  • 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 ...
  • Precision Grinding for Rapid Manufacturing of Large Optics 
    Tonnellier, Xavier (Cranfield University, 2009-05)
    Large scale nuclear fusion and astronomy scientific programmes have increased the demand for large freeform mirrors and lenses. Thousands of one metre class, high quality aspherical optical components are required within ...
  • Predictive grinding process optimisation and monitoring 
    Leeson, David Christopher (2005-09-09)
    Grinding is one of the oldest and most important metal removal processes, and is capable of high dimensional and surface finish tolerances. It is a complex and expensive process; industry has much to gain by increasing ...
  • Processing and fluid flow characteristics of hot isostatically pressed porous alumina for aerostatic bearing applications 
    Kwan, Y. B. P (Cranfield University, 1996-12)
    Despite their well known superior load and stiffness characteristics, the wide-spread use of porous aerostatic bearings in preference to other bearing types has been hampered by difficulties in controlling the permeability ...
  • Reactive plasma spraying 
    Al-Sabouni, Omar (Cranfield University, 1999)
    Reactive Plasma Spraying (RPS) with a hydrocarbon gas has been studied as a method to improve the mechanical properties of a commercially available 80: 20 nickel-chromium alloy, and subsequently as a method to reduce ...