All Outputs (460)

A method for representation of component geometry using discrete pin for reconfigurable moulds (2011)
Journal Article

Moulding plays a paramount role in our daily life. Traditional moulding is often dedicated and expensive. As the current market trend moves from mass production towards small batch and large variation production, the demand for a mould that can recon... Read More about A method for representation of component geometry using discrete pin for reconfigurable moulds.

Thermal-mechanical fatigue simulation of a P91 steel in a temperature range of 400–600°C (2011)
Journal Article

This paper deals with the identification of material constants to simulate the effect of cyclic mechanical loading and temperatures. A Chaboche viscoplasticity model was used in this study to model the thermal-mechanical behaviour of a P91 martensiti... Read More about Thermal-mechanical fatigue simulation of a P91 steel in a temperature range of 400–600°C.

Large deformations in oriented polymer glasses: experimental study and a new glass-melt constitutive model (2010)
Journal Article

An experimental study was made of the effects of prior molecular orientation on large tensile deformations of polystyrene in the glassy state. A new hybrid glass-melt constitutive model is proposed for describing and understanding the results, achiev... Read More about Large deformations in oriented polymer glasses: experimental study and a new glass-melt constitutive model.

Damage mechanics based predictions of creep crack growth in 316 stainless steel (2010)
Journal Article

This paper describes a novel modelling process for creep crack growth prediction of a 316 stainless steel using continuum damage mechanics, in conjunction with finite element (FE) analysis. A damage material behaviour model, proposed by Liu and Murak... Read More about Damage mechanics based predictions of creep crack growth in 316 stainless steel.

Cyclic thermo-mechanical material modelling and testing of 316 stainless steel (2010)
Journal Article

A programme of cyclic mechanical testing of a 316 stainless steel, at temperatures of up to 600 °C under isothermal conditions, for the identification of material constitutive constants, has been carried out using a thermo-mechanical fatigue test mac... Read More about Cyclic thermo-mechanical material modelling and testing of 316 stainless steel.

On the interpretation of results from small punch creep tests (2010)
Journal Article

The small punch creep testing method is highly complex and involves interactions between a number of non-linear processes. The deformed shapes that are produced from such tests are related to the punch and specimen dimensions and to the elastic, plas... Read More about On the interpretation of results from small punch creep tests.

A novel method for obtaining the multiaxiality constant for damage mechanics which is appropriate to crack tip conditions (2010)
Journal Article

Many engineering components, such as power plant steam pipes, aero-engine turbine discs, etc, operate under severe loading/temperature conditions for the majority of their service life. As a result, cracks can initiate and subsequently propagate over... Read More about A novel method for obtaining the multiaxiality constant for damage mechanics which is appropriate to crack tip conditions.

Evaluation of cure shrinkage measurement techniques for thermosetting resins (2010)
Journal Article

Resin chemical shrinkage dictates the surface integrity and the roughness of a composite structure. Thus, to minimize surface failures and to produce a good surface quality it is a requisite to be able to measure and track resin shrinkage during the... Read More about Evaluation of cure shrinkage measurement techniques for thermosetting resins.

Determination of material parameters in the chaboche unified viscoplasticty model (2009)
Journal Article

An experimental programme of cyclic mechanical testing of a 316 stainless steel, at temperatures up to 600°C, under isothermal conditions, for the identification of material constitutive constants, has been carried out using a thermo-mechanical fatig... Read More about Determination of material parameters in the chaboche unified viscoplasticty model.

Determination of material properties in the Chaboche unified viscoplasticity model (2009)
Journal Article

An experimental programme of cyclic mechanical testing of a 316 stainless steel, at temperatures up to 600°C, under isothermal conditions, for the identification of material constitutive constants, has been carried out using a thermo-mechanical fatig... Read More about Determination of material properties in the Chaboche unified viscoplasticity model.

Development of a technique for predicting the human response to an emergency situation (2009)
Conference Proceeding

This paper presents development work on a new approach for predicting the human response to an emergency situation. The study builds upon an initial investigation in which 20 participants were asked to predict what actions they would take in the eve... Read More about Development of a technique for predicting the human response to an emergency situation.

Predicting the human response to an emergency (2009)
Conference Proceeding

This paper presents a case study of an approach for predicting the human response to a domestic fire, using a combination of a talk-through technique (Kirwan and Ainsworth, 1992) and sequential analysis (Bakeman and Gottman, 1986). 20 participants w... Read More about Predicting the human response to an emergency.

The effect of laser transformation notching on the controlled fracture of a high carbon (C70S6 ) steel (2008)
Journal Article

A high carbon (C70S6) steel has been laser surface treated using CO2 and Diode lasers in order to produce an embrittled region to act as a fracture notch. Such a process has been investigated as a precursor to the fracture splitting of automotive eng... Read More about The effect of laser transformation notching on the controlled fracture of a high carbon (C70S6 ) steel.

Modal Control of Vibration in Rotating Machines and Other Generally Damped Systems (2006)
Conference Proceeding

Second order matrix equations arise in the description of real dynamical systems. Traditional modal control approaches utilise the eigenvectors of the undamped system to diagonalise the system matrices. A regrettable consequence of this approach is t... Read More about Modal Control of Vibration in Rotating Machines and Other Generally Damped Systems.

Optimal Controller Designs for Rotating Machines - Penalising the Rate of Change of Control Forcing (2006)
Conference Proceeding

In the context of active control of rotating machines, standard optimal controller methods enable a trade-off to be made between (weighted) mean-square vibrations and (weighted) mean-square currents injected into magnetic bearings. One shortcoming of... Read More about Optimal Controller Designs for Rotating Machines - Penalising the Rate of Change of Control Forcing.

Structural characterisation of spintronic GaMnAs and GaMnN heterostructures grown by molecular beam epitaxy (2005)
Book Chapter

Observations of orthogonal orientations demonstrate the development of banded contrast features on inclined {-1-1-1}B planes for the [110] projection within micron thick samples, attributed to a compositional fluctuation in the Mn content. The relat... Read More about Structural characterisation of spintronic GaMnAs and GaMnN heterostructures grown by molecular beam epitaxy.

Structural characterisation of MBE grown zinc-blende Ga1-xMnxN/GaAs(001) as a function of Ga flux (2005)
Book Chapter

Ga1-xMnxN films grown on semi-insulating GaAs(001) substrates at 680°C with fixed Mn flux and varied Ga flux demonstrated a transition from zinc-blende/wurtzite mixed phase growth for low Ga flux (N-rich conditions) to zinc-blende single phase growth... Read More about Structural characterisation of MBE grown zinc-blende Ga1-xMnxN/GaAs(001) as a function of Ga flux.

Characterisation of dispersions within annealed HVOLF thermally sprayed AlSnCu coatings (2004)
Book Chapter

High velocity oxy-liquid fuel (HVOLF) AlSnCu coatings are characterised following annealing for up to 5 hours at 300°C. A combination of statistical analysis of BSE images and TEM observations demonstrate the decrease in the number of sub-micron and... Read More about Characterisation of dispersions within annealed HVOLF thermally sprayed AlSnCu coatings.

The application of tripod polishing and focused ion beam milling to the TEM specimen preparation of HVOF thermally sprayed coatings (2004)
Book Chapter

The microstructure of high velocity oxy fuel thermally sprayed coatings is highly anisotropic and inhomogeneous. Tripod polishing has enabled the preparation of samples with up to 0.5mm diameter electron transparent areas, where a statistically signi... Read More about The application of tripod polishing and focused ion beam milling to the TEM specimen preparation of HVOF thermally sprayed coatings.

Scanning electron microscopy of biomaterials (2004)
Book Chapter

A comparison of conventional high vacuum scanning electron microscopy (HVSEM), environmental SEM (ESEM) and confocal laser scanning microscopy (CLSM) in the assessment of cell-material interactions is made. The processing of cells cultured for conven... Read More about Scanning electron microscopy of biomaterials.