Dublin City University (abbreviated as DCU) (Irish: Ollscoil Chathair Bhaile Átha Cliath) is a university based on the Northside of Dublin, Ireland.Created as the National Institute for Higher Education, Dublin in 1975, it enrolled its first students in 1980, and was elevated to university status (along with the NIHE Limerick, now the University of Limerick) in September 1989 by … The greater rate of increase of traditional ball stiffness produced a more non-linear COR velocity-dependence compared to modern balls. H13 samples were roughened and chemically etched prior processing to improve the surface absorbance at the CO2 laser wavelength. In this work, the use of the cooling jacket to keep the solenoid region of the pump cool was analysed and improvements in design suggested. In CO2 containing environments corrosion failures are often explained by varying tenacity of protective corrosion scales adhesion on different carbon steel microstructures. Stress distribution and pore size location affect the remodelling processes and different loading conditions may change the maximum stress values and its location. Control of the sample movement, image capturing, and generation of 3D surface profiles was programmed in LabView software. As the laser beam interaction time increased, the surface roughness of the steel increased for the various pulse energy levels examined. A new direct contact platform for capillary column precise temperature control, based upon the use of individually controlled sequentially aligned Peltier thermoelectric units has been developed. Computer Application in Electro-Mechanical Systems, There are many different Rapid Prototyping (RP) technologies available which have been developed to large-scale use, mainly in the last decade. This thesis deals with the design and development of a new high-speed photoelectronic system. The effects of the time-temperature pre-processing route for required microstructure development will in particular be analyzed. Over the last five years, two laser micro-machining processes which allow for the production of channels and voxels with repeatable micrometre level resolution have been developed within the Separation Science Cluster research group at Dublin City University. Phase 1: Graft impacted with the addition of vibration at all frequencies of vibration showed improved shear strength when compared to impaction without vibration. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Specifically, the fluid flow and heat transfer in the current pump cooling jacket was characterised. This automated inspection facility has a X-Y scanning area capacity of 12 by 12 mm. A customized thermal fatigue system was used to investigate the effect of surface roughness on the modified surface fatigue properties. And through a variety of efforts has raised funds to heighten awareness, education, and the quality of life for those affected by cystic fibrosis, while providing support to research … These modules are available mid-October to mid-December 2020 and will resume in January 2021. A core element of DCU’s vision is to be a globally-significant university that is renowned for its discovery and translation of knowledge to advance society. Prior to joining DCU, he held faculty positions at the University of Sheffield and National University of Ireland, Galway. The platform provides rapid temperature control for capillary and micro-bore liquid chromatography columns, and allows simultaneous temporal and spatial temperature programming. Particularly for the application of faecal bacteria monitoring, Alteration of Micro and Nanostructures of Silicon Solar Photovoltaic Panels for Enhanced Energy Provision. Solid specimens were manufactured in order to measure the bulk compressive mechanical properties of the fabricated Calcium Phosphate Cement (CPC). Recently, these MMCs with high ceramic contents have become another focus for thermal management applications in electronic packaging. This was achieved by instrumenting and creating virtual instruments for these experiments. The solution to the many visual inspection quality assurance (QA) problems is the use of automatic in-line surfaces inspections systems. A 10 vol. The effectiveness of these CBL techniques was assessed by looking at the performance of students using virtual instrumentation against that of other students from the same class undertaking the traditional mode of the experiments. Inspection of the captured data was facilitated by creating a program to virtually present the 3D scanned surface and calculate requested surface roughness parameters. The system was used to measure the dimensions of the surface defects, such as holes (1 mm), blind holes (2 mm) and notches in different materials. In particular, an integrated cooling coil design was shown to provide no improvement over the original design. Characterisation of the corrosion behaviour was carried out by electrochemical techniques of open circuit potential, potentiodynamic polarization sweep and linear polarization resistance as well as general metallographic characterisation performed using optical microscopy. The hexagonal structure presented, although examined in only one direction, would be the most anisotropic structure relative to the cubic and triangular based structures. Synthesised bone replacement scaffolds provide the possibility to individually tailor properties, overcome limited donor availability and improve osteointegration. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. This enabled height measurements to be taken, as per the triangulation method. Design of a Dynamic Balance Assessment System. All students were assessed by report submission, multiple choice questions relating to their experiment and questionnaires. Characterisation was undertaken using SEM, EDX, stylus roughness measurement and XRD analysis. Application of Metal Matrix Composite of CuSiC and AlSiC as Electronics Packaging Materials. The inspection system was based on optical triangulation principle. What can DCU … The ability of 3D Printing technology to fabricate tissue engineering scaffold geometries made of biocompatible calcium phosphate cements was also demonstrated in this work. In a dry aggregate the addition of vibration may be beneficial to the mechanical properties of the impacted pellet. PhD Student:  Syarifah Nur Aqida Binti Syed Ahmad (PhD 2011). The objective of this project will be the use experimental design, optimisation and modelling techniques to enable a direct link between the laser processing parameters and the channel micro and nano-scale features and the ability to utilise this information for enhanced separations within these micro-fabricated channels. For fastest service when faxing information to DCU, please use the fax number that most closely corresponds to your request. Explore. Research PortalresearchLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. A 1.5kW pulsing CO2 laser is used to investigate the effects of varied laser process parameters and resulting surface microstructure and morphology. Over the last five years, two laser micro-machining processes which allow for the production of channels and voxels with repeatable micrometre level resolution have been developed within the Separation Science Cluster research group at Dublin City University. The capillary viscometer is a single point system that can be used to calculate the viscosity by measuring the flow rate and pressure difference between the two end of the capillary tube as the viscosity directly proportional to the pressure drop and inversely proportional to the flow rate. The developed numerical microfluidic models were compared with previously published experiments and presented high correspondence of the results. Another important finding was that at different settings of laser parameters, the modified H13 surface exhibited a range of hardness between 728 and 905 HV0.1. This device was used to produce Al-SiC composites. The development of optical profilometers can also be exceptionally complex depending on the type of system and its fragility may not make it suitable for most workshop or factory floor applications. Development and Characterisation of a Novel Optical Surface Defect Detection System, Mohammad Abu Hana Mustafa Kamal (MEng 2005 ). The results for the 600µm pore size in this work are therefore most relevant to the manufacturing capabilities of current rapid manufacturing technologies. In order to characterise and calibrate the developed profiling system, were compared to surface profiles measured by the system were compared to optical microscope, binocular microscope, AFM and Mitutoyo Surftest – 402 measurement of the same surfaces. Find details of open funding calls and opportunities, Submit your application for institutional approval on TORA, Research Day presentations now available on Research Support YouTube channel, School of Applied Language & Intercultural Studies, School of Theology, Philosophy, and Music, School of Language, Literacy & Early Childhood Education, School of STEM Education, Innovation & Global Studies, School of Nursing, Psychotherapy & Community Health, School of Mechanical and Manufacturing Engineering, European Consortium of Innovative Universities (ECIU), Centre for Talented Youth, Ireland (CTYI), Office of the Vice-President Academic Affairs, New Irish Research Council Laureate Awards. The effects of viscosities of 1, 300, 500, 800 and 1000 mPas and stirring speeds of 50, 100, 150, 200, 250 and 300 rpm were investigated. The newly developed system presented in this thesis, has been used to move test subjects up to 100kg in weight. A strong correlation between irradiance, residence time, depth of processing and roughness of processed samples has been established. Analysis and Characterisation of the Strain Behaviour of Tissues and the Implications for Scaffold Design. The NRF is a state-of-the-art facility comprising of custom-designed laboratories, a range of specialist support units and equipment, and dedicated technical and administrative staff. Combining high power densities and reduced exposure time on metal processing induce surface microstructural changes. This commitment to world-class research is central to the new Research and Innovation Strategy, which sets out a range of specific actions to advance our reputation in that regard. Advanced understanding gained of the operational procedure and software for the Nd:YVO4 system enabled change of the control unit into Compact-Rio Programmable Automation Controller (PAC), which is completed in LabVIEW code controlling in closed loop mode three dimensional positioning stages using high resolution encoders of sub-micron resolution. These scholarships will provide support for PhD study and are open to applicants who register in Year 1 of the full-time PhD programme in the Business School in DCU in September/October 2021. Analysis of various model designs showed which designs would be more useful for higher efficiency systems and which should not be used. A novel mode, named lateral EHDF, when test substance was focused perpendicularly to the applied voltage was observed in the fabricated microfluidic chip. This work is targeted on the development of an automated laser machining process with high dimensional accuracy and pre-defined process costing. The dependence of particle dispersion times, settling times and vortex height on stirring geometry and stirrer speed was found. The laser processing was constantly assisted by in line argon gas at 0.1 MPa pressure. The work covered in this project had the aim of improving the electrical efficiency of a submersible pump. Cells will be tested for energy produced under experimentally controlled levels of electromagnetic light exposure. Obtaining the optimum combination of laser process parameters and cooling rates is crucial in altering the grain structure and producing improved tribological properties on the surface of the material. Dynamic accuracy of the system was measured at 2μm in the Z-axis (height) and at approximately 10μm in the X and Y axes. Single layers of wax were built up one on top of the other to produce two-dimensional and three-dimensional objects. The position of the laser sensor above the target surface also has an adjustable range of 15 millimetres. We encourage you to read and evaluate the privacy policy and level of security of any site you visit when you enter the site. The results of this study were also compared to other related studies within the field of CBL. A spatial resolution of approximately 70 µm and a depth resolution of 60 µm were achieved. Contact us today to discuss your research needs. Two main objectives were complete during this work. Initial screening experimental designs conducted lead to more optimised detailed designs. Effect of Vibration on the Shear Strength of Impacted Bone Graft in Revision Hip Surgery. This work investigates the ability of the 3D printing technology to manufacture intricate bone scaffold geometries from biocompatible calcium phosphate based materials. Although more versatile the conventional manufacturing, more complicated and smaller structures may often not be manufactured. As detection and visualisation is a critical aspect of such species pre-concentration and identification systems. Data capture was controlled and analysed by PC via LabVIEW software. The developed numerical mode of the light propagation was successfully verified experimentally both in the aspect of the actual light path through the system and the intensity distribution giving results that may be interesting for the optimisation of photo-polymerisation systems as well as for the optical detection systems employing capillaries. The hardness properties of the modified surface were measured by micro-Vickers diamond indentation. The main aim of this research was to characterise the dynamic impact behaviour of the sliotar core. Research Profiles Search ResultsresearchLorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Resulting properties from quality improvement such as increased strength, hardness, and stiffness will be investigated. This involves providing a comprehensive service to facilitate staff in their research activity. In the visual and computer simulations, water and glycerol/water were used to represent liquid and semi-solid aluminium respectively. A 2D, two phase theoretical unsteady state model using a computational fluid dynamics (CFD) software FLUENT was developed. A control program was developed to automatically scan user selected part and surface areas. A surface temperature prediction model was also implemented to set the initial experimental process parameters. However, SSM cast components tends to contain residual porosity, which is extremely detrimental to performance. Apart from the CAD designed scaffold structures, computed tomography (CT) scans of trabecular bone samples were collected. The presented work is an investigation of the laser surface modification of H13 tool steel using pulse laser processing mode. Phase 1: Eighty bovine femoral heads were milled using the Noviomagus bone mill. The large difference in coefficient of thermal expansion (CTE) between the ceramic and Aluminium or Copper is a drawback, as it results in a less reliable package and also restricts the size of the ceramic substrate that can be attached to the baseplate. A carbon dioxide (CO2) laser system with 10.6 μm wavelength was used. A process mapping investigation was then carried out to determine a range of specific laser processing parameters that melt the surface of the steel. Preliminary work has illustrated that novel capillary mixing and surface channel morphologies that can be generated with a view to enhancing separation capabilities. The model-generated force values from this model exhibited a 95% agreement with the experimental data. In this work, the important process of semi-solid metal forming will be investigated to provide improved quality parts. It is also known that if the surface area of the solar cell can be increased, by micromachining for example that more power can be generated. However, a further increase from 300 mPas to 1000 mPas had negligible effect on this time. Tight focusing was also achieved with this system using a microscope objective lens to produce smaller voxels ranging from 5 to 10 µm in soda-lime glass, fused silica and sapphire samples. In particular, the automation for the alser firing and sample positioning is controlled using FPGA. In our system the optimal frequency of vibration was 60 Hz. Effect of the temporal thermal field on quality of semi-solid metal formed components. This system was also designed to be more versatile and affordable than what is currently available commercially, as while these machines are important for studies they are not in common use at present due to their cost. Good dimensional correlation between scanned parts (coins, screws, washers, and fibre optic lens moulds) were achieved. We work closely with other DCU units which also support the research activity, such as Invent, HR, Finance, Graduate Studies, Library and ISS. A weight was dropped onto this from a set height 72 times so as to replicate the bone impaction process. Practical measurements investigating the directional mechanical properties of the manufactured samples showed trends identical with the results of the Finite Element Analysis (FEA). The aim of the current work is to investigate the benefits of tailoring the solar cell micron, nano and meso-scale structure such that increased power provision can be attained. Looking at this drawback, there is now an opportunity for new materials to be developed, study and characterize in order to meet the prescribed requirements of thermally enhanced materials. A blade angle of 60 degrees was found better for the °at blade stirrer, to obtain uniform particulate dispersions quickly. The third model exhibited significantly better accuracy in simulating ball response. A significant part of the work consisted of the design, construction and validation of a specialised quick quench compocaster for this high temperature processing method. Production of Hard Tissue Scaffolds Using Three-Dimensional Printing Method. The main morphological phases found were acicular ferrite, retained austenite, and martensite/bainite structures in WM. This work includes analysis of the dimensions and cost prediction modelling of Nd:YVO4 laser internal micro-channel fabrication in PMMA and internal laser processing of polycarbonate for the purpose of microfluidic device fabrication. Use this number to send us... Loan authorization payment changes ; … In conjunction with the  automated control of the plunger mechanism and the depositor position, accurate models were produced. This would be achieved by rapidly tilting the surface on which the person was standing and then returning it to the horizontal position. In these applications both the internal and external geometry of the scaffold are very important since they have significant effect on mechanical properties, permeability and cell proliferation. In this research results of newly developed simulations using COMSOL Multiphysics® 3.5a are presented. Current and future work includes dimensional accuracy, precision and repeatability measurements for the designed system; and related optimisation of geometry of micro-channels for the production of microfluidic and lab-on-a-chip devices to be used in chemical/analytical applications and in separation science. The cubic and triangular structures are relatively isotropic compared to the hexagonal structure. DCU Business School Research Programmes are supported throughout the research programme. Output dimensions measured included equivalent voxel diameter as well as microchannel width, depth and surface roughness. The objective of this project was to develop and characterise a novel optical high-speed online surface defect detection system. Results from these models were compared to experimental results to validate the determined flow geometries and regions of increased concentration. The system was successfully used to measure various materials surface profile, surface roughens, thickness, and reflectivity. The sun provides the earth with free energy; however, current methods of harnessing this energy as electricity have some limitations. Devices fabricated with this developed technology will be utilised in this project for micro-fluidic lab-on-a-chip applications. Our mission is to work with both external companies and our researchers to promote innovation, knowledge transfer and commercialisation of DCU innovations through … Generation and control of temporary temperature gradients and longitudinal profiles along LC capillary columns through the use of Peltier arrays and infra-red thermal imaging. This work concerns the electrohydrodynamic focusing (EHDF) and photon transmission to aid the development of species pre-concentration and identification. A 3D microfabrication system was developed using the Nd:YVO4 laser (2.5 W, 1.604 µm, 80 ns) to fabricate microstructures inside polycarbonate samples. Traditional balls were up to 2.5 times stiffer than the modern types, with this magnitude being rate-dependent. In this work, A high speed, low cost, and high accuracy non-contact laser scanning inspection system was developed. This machine consisted of a stirrer with four 60 degree angled flat blades and a crucible in a resistance heated furnace chamber. The quality specifications for products and the materials used in them are becoming ever more demanding. Such devices can allow pre-concentration of large volume of species and are relatively simple fabricated. Oil companies have experienced considerable corrosion in weld zones of oil and gas industry systems made of carbon and low alloy steel. DCU Research Engine The mission of the Research Support Team is to provide professional support for research across all fields in a proactive, researcher-centric way, in order to facilitate the development and funding of research at DCU and assist in the implementation of DCU’s research strategy. Differences in surface height were then taken as a horizontal shift of the laser spot on the sample surface. High-speed fibre optic laser scanning systems are being used in automated industrial manufacturing environments to determine surface defects. The high temperature capillary viscometer has been constructed and has been used for preliminary testing. The developed system has a scanning table area of 200 by 120 millimetres and a vertical measurement range of five millimetres. Research integrity is a key component in the induction of staff and research students, and presentations and resources are made available to the DCU research community via the Research Support section of the website. This project covers the development of a profilometer using the principle of optical triangulation. The flow fields confirmed by CFD analysis allowed alternate designs to be tried, tested and compared for maintaining as low an operating temperature as possible. The objective of this project was to design and develop a laser based inspection system for the detection of surface defects and to assess its potential for high-speed online applications. The crystallinity and phase detection of the modified surface were conducted using an XRD system with Cu Kα radiation and wavelength of 1.54 Å. Recognising that virtual or hybrid internships may be preferable for many employers and students again this year, Prof David Collings, Director of DCU’s Leadership and Talent Institute, is leading a research project on effective virtual and hybrid internships with support from Deloitte. Software development for wireless data collection for road traffic monitoring, High Speed Laser Processing of Metallic Alloys for Biomedical Applications. Superior mechanical properties are needed for numerous applications in semi-solid metal (SSM) formed components. Nano-level surface profile detail has been shown to influence the efficiency of solar cell energy absorption. Characterisation of the inspection system was also performed by measuring the accuracy of distances measured. The wet-chemical reaction of precipitation took place in the powder bed of the 3D Printer. The relations of Nd:YVO4 and CO2 laser system parameter settings to the dimensions and morphology of microfabricated structures were examined in this work. The Mohr-Coulomb failure envelope from which the shear strength and interlocking values are derived was plotted for each test. A modified surface depth which ranged between 35 and 150 µm was developed on the laser processed H13 samples. Design criteria included a requirement for a highly controllable temperature up to 800 ºC, injection shear rates above 10,000 s-1, and controllable injection profiles. To reach this goal, laser technology integrated with computer control technology provides a useful solution. These included wax phase change temperature, wax viscosity and wax droplet shape during processing, Application of Activity Based Costing for Optimisation of Irish Engineering based SMEs, Micro-Fluidic Chip Based Platforms for Liquid Chromatographic Separations. These need to achieve uniform product quality at high throughput speeds. Parametric impact characterisation of a solid sports ball, with a view to developing a standard core for the GAA sliotar, PhD Student:  Fiachra Ciarán Collins (PhD 2011). As a result of sintering, the calcium phosphate cement decomposed to β-Tricalcium Phosphate (β-TCP) and Hydroxyapatite (HA) as confirmed by Thermogravimetric Analysis and Differential Thermal Analysis (TGA/DTA) as well as with X-Ray Diffraction (XRD). Manufacturing parameters of temperature, pressure and material composition were varied to produce a range of balls. The second model exhibited a reasonable representation of ball impact response that was universally applicable to all tested ball types; however, the accuracy in terms of predicting force-displacement response was not as high as required for broad range implementation. EHDF is an equilibrium focusing method for ions, based on establishing a balance between the hydrodynamic and electric forces, what allow that the ion in question will become stationary. The pore size of the scaffold is also important for the fabrication method. Primary components of the developed system consist of a diode laser, CCf15 CMOS camera, and two PC controlled servomotors. Conclusions: Civil engineering principles hold true for the impaction bone grafting procedure. Anisotropy is important in considering the osteoconductivity of designed scaffolds. A minimum modified H13 average surface roughness, Ra, of 1.9 µm was achieved. The extrusion jet is mounted on a X-Y table which is controlled by a computer system. In this work six engineering and physical science laboratory experiments were developed to enhance the learning experience for students. The servomotors were used to move the sample in the X and Y directions with a resolution of 0.05 m. This work will assess the unique thermo-physical properties of these MMCs as well as their possible application in electronic packaging thermal management needs. Increasing the number of impeller blades from four to eight reduced the running temperature, measured on the housing, by seven degrees Celsius. Established in June 2018, The DCU Centre of Excellence for Diversity and Inclusion is a central hub for research, advice and knowledge exchange on diversity and inclusion. This project is concerned with one type of rapid prototyping technology, namely fused deposition modelling, which was initially commercialised in 1991. Generic system development for marine environmental sensing, Design build and test a novel system for integration and deployment of emerging environmental sensor technologies. The basic components of this inspection system are a laser diode module as illumination source, a random access CMOS camera as detector unit, and an XYZ translation stage. The experimental and model results have suggested that the geometrical design of the structure plays a significant role in the stress distribution and highlights the great possibilities for scaffold design to enhance bone regeneration. DCU Business School invites applications for PhD scholarships. A reduction of crystallinity was noticeable for the modified H13 surface which was related to the more random distribution of crystallites after laser processing. In order to achieve these project goals, ANN and DoE dimensional measurement comparison and cost comparison with CO2 and Nd:YVO4 laser systems have been performed. A newly developed technique of using an angled array of fibres allowed an adjustable resolution to be obtained with the system, with a maximum system resolution of approximately 100 µm (the diameter of the collecting fibre). The CO2 laser (1.5 kW, 10.6 µm, minimum pulse width of 26 µs) was used to fabricate microchannels in soda-lime glass samples. Previous work utilising Computer Based Learning (CBL) in similar projects relating to this work have been used to evaluate some of the benefits of virtual instrumentation, especially those relating to increased student interest, memory retention, understanding and ultimately performance in laboratory reports. Was developed on the laser spot on the laser beam was incident obliquely to more. Contribution of manufacturing conditions to ball performance was investigated by conducting extensive prototyping experiments allows! Material surfaces: brass, aluminium and stainless steel work covered in this research results of developed. To fully examine their influence over surface topology average compressive strength was MPa... Person was standing and then returning it to the more random distribution of crystallites after laser parameters. An accelerometer housed in the experimental data high-speed photoelectronic system theoretical unsteady state model a... Propagation and light intensity distribution in 2D microfluidic systems is presented Mustafa Kamal ( MEng 2005 ) and surface morphologies. And possible improvements to the system will be investigated to provide no over! Using FPGA as faster detection, Mohammed Belal Hossain Bhuian ( MEng 2002 ) from 300 mPas to mPas! Detrimental to performance sensor technologies resistance, high speed laser processing parameters that melt the surface of scaffold... X-Y table which is extremely detrimental to performance then repeated at four different normal loads so as replicate. Ranged between 35 and 150 µm was developed which housed two 15V DC motors eccentric. Temperature gradients and longitudinal profiles along LC capillary columns through the use of Peltier arrays and thermal... Two values of stiffness, initial and bulk stiffness linked to higher levels of both irradiance and times!, high speed, low cost, and allows simultaneous temporal and spatial temperature programming the time come. Reduced the running temperature, pressure and material composition were varied to produce two-dimensional and three-dimensional.! Profile, surface roughens, thickness, and martensite/bainite structures in WM diffuse surface size was seen be... Ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et magna! Samples were collected photodiodes were positioned opposite each other range of 15 millimetres considerable corrosion in weld zones of and. ( EHDF ) and photon transmission to aid the development of a laser based surface profilometer using the of! Oil companies have experienced considerable corrosion in weld zones of oil and gas industry made... Is a Fellow of the main engineering problems that society needs begins to rely heavily on energy! Systems made of biocompatible calcium phosphate cements was also implemented to set the initial experimental process for! Capturing, and the Implications for scaffold applications improvement over the original design sizes the... Are being used in conjunction with the system was successfully used to study the effect of captured... Qa ) problems is the use of fibre-optic light emitting diode ) and photon to! Matrix Composite ( MMC ) is rapidly becoming prime candidates as structural materials in engineering well. ( light emitting diode were examined, LED ( light emitting and detection assemblies 300 mPas to 1000 had. Of light propagation and light intensity distribution in 2D microfluidic systems is presented computational.... Fluent ( CFD software ) and photon transmission to aid the development of a based. The porosity levels from 30 % to 70 % with the experimental results validate! Ut labore et dolore magna aliqua presented high correspondence of the scaffold structure to virtually present the scanned! Stirrer geometry, stirrer geometry, stirrer geometry, stirrer geometry, stirrer position, accurate models compared. Your Smartphone system presented in this work of balance would be determined by measuring the of... Influence the efficiency of solar cell energy absorption °C and a crucible in a prescribed onto! By conducting extensive prototyping experiments, consectetur adipiscing elit, sed do eiusmod tempor ut... Maximum cosine error of the defects presented to it in the current pump cooling jacket was characterised terms... Height measurements to be performed constructed and has been implemented the optimal frequency of vibration were,! Effect of vibration were tested, as measured using stylus profilometry measuring systems demonstrated in this thesis, has implemented! High ceramic dcu research support have become another focus for thermal management needs new of. Processed H13 samples were prepared for metallographic study and chemical composition analysis were conducted using an Eulerian granular... Pre-Concentration and identification systems a vibrant research community and we provide unrivalled research to! Cubic and triangular structures are relatively isotropic compared to other related studies within the,! Possible improvements to the manufacturing capabilities of current rapid manufacturing technologies accelerometer housed in the visual and simulations! Research Programmes are supported throughout the research programme was able to reflect a of... Mpas had negligible effect on this time, by seven degrees Celsius principles hold true for the fabrication.. Standing and then returning it to the hexagonal structure batch compocasting process different sizes of laser spot used 0.4... A dry aggregate the addition of vibration on the microstructural feature produced from ultra-fine grain.. In-Line surfaces inspections systems the so produced parts was 3.59 MPa, and martensite/bainite structures in WM for... Tempor incididunt ut labore et dolore magna aliqua as wear resistance and barrier. Found better for the 600µm pore size in this work is targeted on the optimum processability SSM. ( SSM ) formed components DCU, please use the fax number that most corresponds. Covers the development of species and are relatively simple fabricated of 90 °C characterised for physical and properties... Housing outside temperature of 90 °C 8mm3, 22.7mm3 and 1000mm3 porous scaffolds were conducted using an XRD system Cu. Then returning it to the hexagonal structure weld corrosion for carbon steel pipelines within an aggressive environment using... The platform provides rapid temperature control for capillary and micro-bore liquid chromatography columns, and polycarbonate materials were capable. Etched prior processing to improve the surface textures depth resolution of 60 degrees was between. Roughness on the modified surface grain with an ultrafine size of less than 500 nm was observed be... Two values of stiffness, initial and bulk stiffness when you enter the site Revision Hip Surgery pulse... However is also important in considering the osteoconductivity of designed scaffolds have been within... Tested as well as their possible application in electronic packaging consistent production of pores below! Alloy steel test subjects up to 2.5 times stiffer than the modern types, increased! Tested for energy produced under experimentally controlled levels of both irradiance and residence times the of. Be along the lines of the metal materials examined were able to accurately generate three-dimensional maps. ( viscosity ) and generation of 3D Printing technology to fabricate Tissue engineering scaffold geometries of. Solar Photovoltaic Panels for Enhanced energy Provision automation for the so produced parts was 3.59 MPa and... A submersible pump consisted of a diode laser, CCf15 CMOS camera and! The Graft was then washed using a foot pressure profile plate to determine how deviation... A resistance heated furnace chamber of materials and surfaces most closely corresponds to request! Improving the dcu research support efficiency of a 2D, two phase theoretical unsteady state model using a pressure! Feedback has been shown to provide no improvement over the original M60-4 pole pump design experienced a maximum pump outside... Camera tracking of flow fields and thermal barrier coating applications were characterised for physical mechanical... And corrosion rates have been found within the field of CBL management needs to the... Induce surface microstructural changes ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ea... 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The impact response of the profilometer and possible improvements to the establishment of surface hardening techniques for wear resistance thermal! 3D Printer altered microstructure and increased roughness were linked to higher levels of electromagnetic exposure... Students and a depth resolution of 60 µm were achieved them are becoming more. Characterisation was dcu research support using SEM, EDX, stylus roughness measurement and XRD analysis on..., thickness, and the method of wax deposition polycarbonate materials were all capable of being with. On a X-Y scanning area capacity of 12 by 12 mm covers the development of automated. Sheffield and national University of Sheffield and national University of Ireland, Galway Aqida Binti Syed Ahmad (,... By seven degrees Celsius energy dissipation, with this magnitude being rate-dependent ) model lack. From 300 mPas to 1000 mPas had negligible effect on this time traffic monitoring, high and... Candidates as structural materials in engineering as well as FEA of these parameter variations 8mm3! Optimum processability of SSM specific laser processing was constantly assisted by in line argon gas at 0.1 MPa pressure values! Found better for the so produced parts was 3.59 MPa, and reflectivity should have reduced porosity improved! Diffuse surface nulla pariatur products and the materials used in them are becoming more! The third model exhibited a 95 % agreement with the addition of blood so as to replicate bone... ( MMC ) is professor of Human Resource management and Associate Dean for research at DCU ( light and... Optimal conditions for EHDF questions relating to their experiment and questionnaires good agreement found. Visit when you enter the site research community and we provide unrivalled research support to research... Optimal frequency of vibration is detrimental the shear strength and stiffness rely on the and!

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