Browsing Mechanical Engineering by Title
Now showing items 110-129 of 262
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Finite element simulation of fretting wear and fatigue in thin steel wires
(Elsevier ScienceDirect, 2013-05-09)This paper studies the effect of fretting on fatigue life reduction of thin steel wires, using the frictionally-induced multiaxial contact stresses obtained from a finite element wear model, validated in previous work. The ... -
A finite element study of microstructure-sensitive plasticity and crack nucleation in fretting
(Elsevier ScienceDirect, 2011)This paper is concerned with finite element modelling of microstructure-sensitive plasticity and crack initiation in fretting. The approach adopted is based on an existing method for microstructure-sensitive (uniaxial) ... -
Fluid dynamics of gas exchange in high-frequency oscillatory ventilation: In vitro investigations in idealized and anatomically realistic airway bifurcation models
(Springer, 2008-11)The objective of this work is to develop understanding of the local fluid dynamic mechanisms that underpin gas exchange in high-frequency oscillatory ventilation (HFOV). The flow field during HFOV was investigated ... -
A framework to support knowledge transfer in the service sector
(2010)This paper introduces a framework for supporting and analysing knowledge transfer in the service sector, which centres on the individual in the process. It argues that the individual is at the centre of the transfer process ... -
Fretting fatigue and wear of spline couplings: From laboratory testing to industrial application through computational modelling
(World Scientific Publishing Europe Limited, 2022-04)One of the major challenges for fretting fatigue design is the bridging of the gap between laboratory tests, including associated theoretical and computer models, typically constrained to simplified loading conditions, ... -
A global-local fretting analysis methodology and design study for the pressure armour layer of dynamic flexible marine risers
(Elsevier, 2019-09-19)In this paper, a global-local fretting design methodology for the pressure armour layer of flexible marine risers is outlined. This includes global dynamic riser analysis, geometrical and analytical sub-models and local ... -
Gross slip fretting wear performance of a layered thin W-DLC coating: damage mechanisms and life modelling
(Elsevier ScienceDirect, 2011)Fretting damage, in the form of wear and fatigue-cracking, is a common cause for concern in a wide range of dynamically loaded mechanical joints, and consequently, control of the rates of such damage is commonly addressed ... -
Groupware architecture for R&D managers
(2004)The business environment is changing at an accelerated pace. Contemporary business systems are becoming more knowledge intensive. This is particularly evident in areas such as product innovation where knowledge centric ... -
A groupware system for product innovation management
(2004)We are experiencing a radical shift in the way organisations are designed, structured and organised. New organisational forms such as strategic partnerships and networks are replacing simple market based transactions and ... -
A groupware system for virtual product innovation management
(Wiley Interscience, 2007)We are experiencing a radical shift in the way organisations are designed, structured and organised. New organisational forms such as virtual strategic partnerships and networks are replacing traditional bureaucratic, ... -
A happy threesome: Innovation, Creativity and Business Support
(2009)Businesses, whether for-profit and nonprofit, are facing change like never before. Numerous driving forces to this change include a rapidly expanding marketplace (globalization), and increasing competition, diversity among ... -
High temperature, low cycle fatigue characterisation of P91 weld and heat affected zone material
(American Society of Mechanical Engineers, 2014-01-08)The high temperature low cycle fatigue behavior of P91 weld metal (WM) and weld joints (cross-weld) is presented. Strain-controlled tests have been carried out at 400 °C and 500 °C. The cyclic behavior of the weld material ... -
A high-fidelity crystal-plasticity finite element methodology for low-cycle fatigue using automatic electron backscatter diffraction scan conversion: Application to hot-rolled cobalt–chromium alloy
(SAGE Publications, 2021-05-11)The common approach to crystal-plasticity finite element modeling for load-bearing prediction of metallic structures involves the simulation of simplified grain morphology and substructure detail. This paper details a ... -
High-resolution measurement of the unsteady velocity field to evaluate blood damage induced by a mechanical heart valve
(Springer, 2011-09)We investigate the potential of prosthetic heart valves to generate abnormal flow and stress patterns, which can contribute to platelet activation and lysis according to blood damage accumulation mechanisms. High-resolution ... -
High-resolution measurements of leakage flow inside the hinge of a large-scale bileaflet mechanical heart valve hinge model
(Springer, 2019-06-24)Purpose It is believed that non-physiological leakage flow through hinge gaps during diastole contributes to thrombus formation in Bileaflet Mechanical Heart Valves (BMHVs). Because of the small scale and difficulty of ... -
Hygrothermal deterioration in carbon/epoxy and glass/epoxy composite laminates aged in marine-based environment (degradation mechanism, mechanical and physicochemical properties)
(Springer, 2022-01-27)One of the major challenges in off-shore tidal and wave energy devices is the ageing of these structures in the hostile marine environment, which limits their operating life. In this research, mechanical properties of aged ... -
ICT as an Opportunity for Regional Development: the Extremadura Case
(2007)The present paper describes the case of Extremadura Region as well as the lessons that can be learned from the processes of re-focussing its regional growth strategy. A brief introduction will show the way many regions or ... -
Idea management for organisational Innovation
(World Scientific, 2003-12)Modern organisations are under ever increasing competitive pressure to maintain market share, enhance product range, improve efficiency and reduce cost. The process by which organisations attain these improvements is ... -
Implementation of an ambient intelligence (AmI) system in a manufacturing SME
(IOS Press, 2008)SME are facing greater challenges due to increased labour cost and reduced cycle times. To adapt to this change more effectively and efficiently they need systems in place that adapt to change easily and seamlessly. This ... -
Implementation of an AmI system in a Manufacturing SME
(2008)SME's are facing greater challenges due to increased labour cost and reduced cycle times. To adapt to these challenges they need systems in place that will enable them to be flexible, effective and efficient. This is the ...