All Outputs (54)

Small ring testing of a creep resistant material (2013)
Journal Article

Many components in conventional and nuclear power plant, aero-engines, chemical plant etc., operate at temperatures which are high enough for creep to occur. These include steam pipes, pipe branches, gas and steam turbine blades, etc. The manufacture... Read More about Small ring testing of a creep resistant material.

Characterization of viscoplasticity behaviour of P91 and P92 power plant steels (2013)
Journal Article

This paper deals with the determination of material constitutive model for P91 and P92 steels at high temperatures. An isothermal, strain-controlled test programme was conducted for both steels for a temperature range between 400 and 675 °C. The expe... Read More about Characterization of viscoplasticity behaviour of P91 and P92 power plant steels.

Comparison of several optimisation strategies for the determination of material constants in the Chaboche visco-plasticity model (2013)
Journal Article

Determining representative material constant sets for models that can accurately predict the complex plasticity and creep behaviour of components undergoing cyclic loading is of great interest to many industries. The Chaboche unified visco-plasticity... Read More about Comparison of several optimisation strategies for the determination of material constants in the Chaboche visco-plasticity model.

Effective determination of cyclic-visco-plasticity material properties using an optimisation procedure and experimental data exhibiting scatter (2013)
Journal Article

It may be inevitable in the design and analysis of most high temperature components (such as power industry pipe work) that variations in load and/or temperature will occur in normal operation. This presents complications in the prediction of the res... Read More about Effective determination of cyclic-visco-plasticity material properties using an optimisation procedure and experimental data exhibiting scatter.

Theoretical basis and practical aspects of small specimen creep testing (2012)
Journal Article

Interest in and the application of small specimen creep test techniques are increasing. This is because it is only possible to obtain small samples of material in some situations, for example, the scoop samples that are removed from in-service compon... Read More about Theoretical basis and practical aspects of small specimen creep testing.

Thermo-mechanical fatigue testing and simulation using a viscoplasticity model for a P91 steel (2012)
Journal Article

An experimental programme of cyclic thermo-mechanical testing for a P91 power plant steel, under isothermal, and in-phase and out-of-phase thermo-mechanical, temperature-strain cycle conditions, has been implemented. Using the experimental data, an o... Read More about Thermo-mechanical fatigue testing and simulation using a viscoplasticity model for a P91 steel.

An investigation of the failure mechanisms in high temperature materials subjected to isothermal and anisothermal fatigue and creep conditions (2011)
Journal Article

Many engineering components are subjected to conditions which have a detrimental effect on the materials from which they are made. Such components are used, for example, within high temperature regions of aeroengines (e.g. turbine discs) and power pl... Read More about An investigation of the failure mechanisms in high temperature materials subjected to isothermal and anisothermal fatigue and creep conditions.

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.

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.

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.