Browsing Mechanical Engineering by Title
Now showing items 169-188 of 262
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On the corrosion cracking of austenitic stainless steel in molten solar salt: experiments and modelling
(Elsevier, 2022-09-16)The mechanical behaviors of 304 and 316 L steels was investigated in air and in solar salt with different contents of chloride impurity under slow strain rate tensile (SSRT) tests using a novel experimental approach at 565 ... -
One way of representing the size and shape of biomass particles in combustion modeling
(Elsevier, 2017-06-29)This study aims to provide a geometrical description of biomass particles that can be used in combustion models. The particle size of wood and herbaceous biomass was compared using light microscope, 2D dynamic imaging, ... -
Operations strategy development and implementation: a self assessment matrix
(Irish Manufacturing Committee, 1996)In both the increasingly competitve and the continuously changing business environment existing today, increasing pressure is placed on companies to maintain and improve their profitability. Managment teams are becoming ... -
Overview of the regulation of medical devices and drugs in the European Union and the United States
(SAGE Publications, 2013-08-06)This article provides an overview of the regulation of medical devices and drugs in the European Union and the US. It is important for all stakeholders involved in bringing a medical device or drugs to market to have an ... -
P-PAC (partnership in pedagogy, accreditation and collaboration): a framework to support student transition to emplyability in industry. A lean systems case study
(Production Engineering Committee of the Polish Academy of Sciences and Polish Association for Production Management, 2018-12)The global economic crisis of the past decade and the accruing shifts in labour market policy, coupled with the rapid advances in technology have resulted in a far less certain future employment horizon than ever before ... -
Particle transport velocity correction for complex boundaries in the Finite Volume Particle Method
(NUI Galway, 2018-06-26)Particle methods such as smoothed particle hydrodynamics (SPH) and the finite volume particle method (FVPM) can suffer from strongly non-uniform and anisotropic particle distributions when purely Lagrangian particle ... -
Perceived non-value added activities in the research grant application process through a lean Six Sigma lens: Lean Six Sigma in higher education.
(Emerald Publishing Limited, 2020-11-30)Universities as part of Higher Education Institutions (HEIs) operate in a climate of reduced state funding and increased oversight and competitive performance pressures. Universities are mandated to award degrees and other ... -
Permeability of carbon fibre PEEK composites for cryogenic storage tanks of future space launchers
(Elsevier, 2017-06-15)This work presents an experimental investigation into the permeability of carbon fibre (CF) polyetheretherketone (PEEK) for cryogenic storage tanks for space applications. The effects of cryogenic cycling, manufacturing ... -
Permeable and Non-reflecting Boundary Conditions in SPH
(Wiley, 2009-11)Inflow and outflow boundary conditions are essential for the application of computational fluid dynamics to many engineering scenarios. In this paper we present a new boundary condition implementation that enables the ... -
Physical experimental static testing and structural design optimisation for a composite wind turbine blade
(Elsevier, 2016-12-10)This study presents experimental testing on a 13 m long glass-fibre epoxy composite wind turbine blade. The results of the test were used to calibrate finite element models. A design optimisation study was then performed ... -
A physically-based constitutive model for high temperature microstructural degradation under cyclic deformation
(Elsevier, 2017-03-23)This paper presents a dislocation-mechanics cyclic viscoplasticity model which incorporates the key physical micro-mechanisms of strengthening and softening for high temperature deformation of 9Cr steels. In particular, ... -
A physically-based creep damage model for effects of different precipitate types
(Elsevier, 2016-10-13)The development of a new precipitate coarsening continuum damage mechanics (CDM) model to simulate the multi-precipitate strengthening mechanisms present in 9Cr steels under high temperature creep deformation is presented ... -
A physically-based high temperature yield strength model for 9Cr steels
(Elsevier, 2018-05-24)The strength of 9Cr steels, which is controlled by chemical composition and microstructure, evolves significantly under high temperature loading. This paper presents a temperature-independent, physically-based model for ... -
A physically-based method for predicting high temperature fatigue crack initiation in P91 welded steel
(Elsevier, 2021-08-27)A methodology is presented for physically-based prediction of high temperature fatigue crack initiation in 9Cr steels, with a focus on material inhomogeneity due to welding-induced metallurgical transformations. A modified ... -
A porosity-based corrosion model for alkali halide ash deposits during biomass co-firing.
(American Chemical Society, 2015-04-24)This paper presents a physics-based model to describe accelerated corrosion because of alkali-halide-containing deposits, which form on superheater tube walls during biomass co-firing. Increased rates of corrosion during ... -
Portfolio management: The holistic data lifecycle
(Drake Management Review, 2022-10)Machine learning provides many benefits to Portfolio Managers in analysing data and has the potential to provide much more. A concern with the approach to Machine Learning in Portfolio Management is that is caught between ... -
Potassium and soot interaction in fast biomass pyrolysis at high temperatures
(Elsevier, 2018-04-02)This study aims to investigate the interaction between potassium and carbonaceous matrix of soot produced from wood and herbaceous biomass pyrolysis at high heating rates at 1250°C in a drop tube reactor. The influence of ... -
Prediction of fast pyrolysis products yields using lignocellulosic compounds and ash contents
(Elsevier, 2019-10-26)The effects of lignocellulosic biomass composition on product yields and distributions were studied under high-temperature pyrolysis conditions (800–1250 C) in a drop tube reactor. Several types of biomass were studied ... -
Prediction of microstructure evolution for additive manufacturing of Ti-6Al-4V
(Elsevier, 2020-04-26)A key challenge for successful exploitation of additive manufacturing (AM) across a broad range of industries is the development of fundamental understanding of the relationships between process control and mechanical ... -
Predictions of ICHAZ cyclic thermo-mechanical response in GTAW process for 9Cr steels
(ASME The American Society of Mechanical Engineers, 2019-02-25)This work is concerned with the development of a modeling framework to predict the effects of tempered–untempered martensite heterogeneity on the thermomechanical performance of welded material. A physically based ...