Browsing Mechanical Engineering (Scholarly Articles) by Title
Now showing items 100-119 of 176
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Manufacturing SMEs doing it for themselves: developing, testing and piloting an online sustainability and eco-innovation toolkit for SMEs
(Taylor & Francis, 2019-11-07)Public discourse frequently cites the damaging activities of large organisations on global environmental issues, but smaller organisations are rarely, if ever, featured. Small and Medium Enterprises (SMEs) make up 99% of ... -
Mechanical behavior and long-term life prediction of carbon/epoxy and glass/epoxy composite laminates under artificial seawater environment
(Elsevier, 2019-12-06)This paper presents an investigation on the long-term performance of carbon/epoxy and glass/epoxy laminates in an artificial seawater environment with 3.5% salinity. Accelerated aging tests were conducted at 60 °C for ... -
Micro-mechanical modelling of fretting fatigue crack initiation and wear in Ti-6Al-4V
(Elsevier ScienceDirect, 2013-05-02)A micro-mechanical modelling methodology is presented for predicting fretting fatigue crack nucleation in Ti–6Al–4V. The methodology is based on a combination of (i) a unit cell crystal plasticity model of Ti–6Al–4V, (ii) ... -
Micromechanical finite element modelling of thermo-mechanical fatigue for P91 steels,
(Elsevier, 2016-01-21)In this paper, the cyclic plasticity and fatigue crack initiation behaviour of a tempered martensitic ferritic steel under thermo-mechanical fatigue conditions is examined by means of micromechanical finite element modelling. ... -
Micromechanical modelling of fatigue crack nucleation in stents
(Bioengineering In Ireland Conference 2012, 2012)A finite element based micro-mechanical methodology for cyclic plasticity and fatigue crack initiation in cardiovascular stents is presented. The methodology is based on the combined use of a (global) three-dimensional ... -
Microstructure modeling of high-temperature microcrack initiation and evolution in a welded 9Cr martensitic steel
(SAGE Publications, 2019-02-28)Welded joints in tempered 9Cr-1Mo operating at elevated temperatures are well known to be prone to premature failure due to cracking in the heat-affected zone. This paper describes a crystal plasticity model to predict the ... -
Microstructure-sensitive prediction and experimental validation of fretting fatigue
(Elsevier ScienceDirect, 2013-06-03)This paper is concerned with the development of a micro-mechanical methodology for prediction of fretting fatigue crack nucleation life and short crack propagation. The methodology employs critical accumulated plastic slip ... -
A model for surface tension in the meshless finite volume particle method without spurious velocity
(Elsevier, 2018-11-22)A surface tension model has been developed in the finite volume particle method (FVPM). FVPM is a conservative, consistent, meshless particle method that incorporates properties of both smoothed particle hydrodynamics and ... -
Modeling the influence of potassium content and heating rate on biomass pyrolysis
(Elsevier, 2017-03-14)This study presents a combined kinetic and particle model that describes the effect of potassium and heating rate during the fast pyrolysis of woody and herbaceous biomass. The model calculates the mass loss rate, over a ... -
Models of flow-induced loading on blood cells in laminar and turbulent flow, with application to cardiovascular device flow
(Springer, 2007-08)Viscous shear stress and Reynolds stress are often used to predict hemolysis and thrombosis due to flow-induced stress on blood elements in cardiovascular devices. These macroscopic stresses are distinct from the true ... -
A multi-axial cyclic viscoplasticity model for high temperature fatigue of P91 steel
(Maney Online, 2014)This paper presents a novel multiaxial, cyclic viscoplasticity material model for high temperature low cycle fatigue of P91 power plant steel. The model incorporates mechanisms-based variable strain-rate sensitivity and ... -
A multi-scale crystal plasticity model for cyclic plasticity and low-cycle fatigue in a precipitate-strengthened steel at elevated temperature
(Elsevier, 2016-12-24)In this paper, a multi-scale crystal plasticity model is presented for cyclic plasticity and low-cycle fatigue in a tempered martensite ferritic steel at elevated temperature. The model explicitly represents the geometry ... -
A Multiaxial Fatigue Damage Model for Fibre Reinforced Polymer Composites
(Elsevier (Scienc Direct), 2013)A multiaxial fatigue damage model for fibre reinforced polymercomposite materials is presented. The model combines (i) fatigue-induced fibre strength and modulus degradation, (ii) irrecoverable cyclic strain effects and ... -
The nature of stable char radicals: An ESR and DFT study of structural and hydrogen bonding requirements
(Wiley, 2018-06-28)Pyrolysis is a promising way to convert biomass into fuels and chemicals. This reaction is complex and inevitably involves a cascade of radical reactions that lead to char formation, in which some radicals become trapped ... -
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, ... -
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 ... -
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 ...