Browsing by Subject "Fatigue"
Now showing items 1-17 of 17
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Development of advanced numerical models for concentrically braced steel frame members and components
(NUI Galway, 2018-09-18)The behaviours of braced steel frame members and components are investigated in this project using finite element models that were developed to address the multi-scale mechanics of braced steel frame structures. The ... -
The development of an online intervention for post-treatment cancer survivors with cancer-related fatigue
(2017-02-02)Background The number of post-treatment cancer survivors in Ireland is set to increase in coming years, due to advances in screening and treatment. This group will require ongoing supportive care as many will experience ... -
A dislocation mechanics constitutive model for effects of welding-induced microstructural transformation on cyclic plasticity and low-cycle fatigue for X100Q bainitic steel
(Elsevier, 2020-12-14)This paper presents a physically-based cyclic viscoplasticity model to capture the influence of welding-induced microstructural transformation on the fatigue response of the bainitic high-strength low-alloy steel, X100Q. ... -
Effect of welding on microstructure and mechanical response of X100Q bainitic steel through nanoindentation, tensile, cyclic plasticity and fatigue characterisation
(Elsevier, 2020-12-30)This paper presents an experimental characterisation of fatigue at welded connections for the next-generation high-strength low-alloy offshore riser steel, X100Q. An instrumented girth weld is conducted with a parallel ... -
An experimental and computational investigation of the high temperature behaviour of MarBN steel with application to effects of manufacturing
(NUI Galway, 2018-10-30)The key step for next generation power plants is the development of advanced materials capable of achieving high flexibility and efficiency at increased steam temperatures and pressures. Such operating conditions will cause ... -
Experimental characterisation and computational modelling for cyclic elastic-plastic constitutive behaviour and fatigue damage of X100Q for steel catenary risers
(Elsevier, 2018-06-21)New higher strength steels are required for deep and ultra-deepwater steel catenary risers (SCRs). In this work, the cyclic elastic-plastic-damage behaviour of X100Q, a candidate next-generation SCR material is experimentally ... -
Experimental characterisation, computational modelling and design tool development for fretting fatigue and wear in flexible marine risers
(2017-09-25)Fretting is a key concern in the fatigue design of the pressure armour layer of flexible marine risers, due to the combination of extreme global dynamic loading conditions and the local geometrical-tribological conditions ... -
Geometry effect in the fatigue behaviour of microscale 316L stainless steel specimens
(2012-06-07)Advances in engineering fabrication technology permit the manufacture of microscale components and devices. These tiny products are used in a wide range of applications, from medical devices to smart phones. There are ... -
Lived experiences of fibromyalgia
(RCN Publishing, 2015-02-10)Martina Diviney and Maura Dowling explain why this chronic illness can take a long time to diagnose and how assessment tools can be used to speed up the process This phenomenological study explored the lived experience ... -
Modelling the mechanical and fatigue behaviour of superelastic NiTi: analysing the role of microstructural phase and crystallographic texture
(2015-08-26)Superelastic NiTi self-expanding stents push the boundaries of our current understanding of material behaviour which ultimately influences the design of biomedical devices. In particular, the influence of microstructure ... -
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 ... -
Multiple myeloma: managing a complex blood cancer
(Mark Allen Healthcare, 2016-09-10)This article gives a comprehensive overview of multiple myeloma (MM), a complex blood cancer involving overproduction of plasma cells. Although MM remains incurable, patients are living longer as a result of multiple ... -
Process-structure-property characterisation of plasticity and fatigue damage in X100 welded joints for steel catenary risers
(NUI Galway, 2020-04-02)Steel catenary risers are increasingly used for offshore oil and gas production due to their suitability for deep and ultra-deepwater installation, in terms of structural capacity and capital expenditure requirements. ... -
Seismic Design of Concentrically Braced Steel Frames
(2012-03-01)The aim of this project is to develop a robust numerical model that accurately replicates the behaviour of CBFs during earthquakes. This numerical model is then used to validate a codified performance based design approach ... -
Statistical grain size effects in fretting crack initiation
(Elsevier, 2016-09-20)A crystal plasticity computational framework is developed and validated to investigate the microstructure sensitivity of crack initiation in fretting. Randomly distributed microstructure geometries are incorporated into a ... -
A through-process, thermomechanical model for predicting welding-induced microstructure evolution and post-weld high-temperature fatigue response
(Elsevier, 2018-02-11)This paper is concerned with the development of a modelling framework to predict the effects of welding and post-weld heat treatment on thereto-mechanical performance of welded material, as a step towards a design tool for ... -
An XFEM-Based Methodology for Fatigue Delamination and Permeability in Composites
(2014)Carbon fibre reinforced polymers (CFRP) are one of the prospective material families being investigated for use in the fuel tanks of future reusable space launch vehicles (RSLVs). The extreme thermo-mechanical loading that ...