Engineering Commons^™

A Novel Drive Cycle Simulation Model For Gasoline Engines To Investigate Bandwidth Coverage Of Emission Performance And Fuel Consumption With Engine Control Parameters, Martin Giencke

Doctoral

The presented work is offering an investigation how the bandwidth of vehicle specific attributes is impacting engine control parameter requirements for warmup control of the catalytic converter, aiming to ease the development process by providing mathematical means for an automatic generation of control settings. For the specific purpose, a novel drive cycle simulation approach is developed, focusing on emission performance and fuel consumption of a gasoline engine. Steady state and quasi steady state measurements are collected to quantify the impact of modifications to control parameters on emission concentration, exhaust gas temperature and engine torque, especially directly after a cold start. …

A Hermeneutic Phenomenological Study Into The Impact Of Bim On The Social Dynamics Of The Aec Professional In The Workplace., Malachy Mathews Dr.

Doctoral

A review of the literature published surrounding new digital design and construction technologies and associated processes described within the Architecture, Engineering, and Construction (AEC) community as Building Information Modelling (BIM) or Virtual Design and Construction (VDC) reveals a gap in the theoretical understanding of the impact these technologies are having on professionals who work in this industry. The central aim of this research is to discover if there has been a shift in social dynamics as a result of the adoption of BIM in the workplace and, if there has been, to discuss the meaning of this for the industry …

A Phenomenographic Study Of Academics Teaching In Engineering Programmes In Ireland: Conceptions Of Professional Skills And Approaches To Teaching Professional Skills, Una Beagon

Doctoral

Engineers play a central role in addressing the challenges which face society. However, the influence of globalisation, disruptive technological change and socially complex problems will greatly affect the way engineers work in the future.

As a result, there have been calls to embrace transformational change in engineering education, yet the literature reveals that many reform efforts have fallen short. Industry and society will therefore continue to look to Higher Education Institutions (HEIs) to better prepare engineering graduates with the new skills needed to face the challenges of the future. Notwithstanding the critical and valued role that technical engineering subjects have …

A New Mmc Topology Which Decreases The Sub Module Voltage Fluctuations At Lower Switching Frequencies And Improves Converter Efficiency, Shahab Sajedi

Doctoral

Modular Multi-level inverters (MMCs) are becoming more common because of their suitability for applications in smart grids and multi-terminal HVDC transmission networks. The comparative study between the two classic topologies of MMC (AC side cascaded and DC side cascaded topologies) indicates some disadvantages which can affect their performance. The sub module voltage ripple and switching losses are one of the main issues and the reason for the appearance of the circulating current is sub module capacitor voltage ripple. Hence, the sub module capacitor needs to be large enough to constrain the voltage ripple when operating at lower switching frequencies. However, …

Biomechanics Of Head Impacts In An Unhelmeted Sport, Stephen Tiernan

Doctoral

Concussion in sport is very common and often the injury is undetectable using CT and MRI scans. In addition, approximately 50% of concussions areunreported.The project initially investigated the suitability of a skin patch sensor and a head-band sensorfor the measurement of head impacts in unhelmeted sports. It was found that both were unsuitable due to large angular accelerationerrors. Thestudy then collaborated withCAMLab at Stanford University and 25 Mixed Martial Arts (MMA) athletes were fitted CAMLab’s validated instrumented mouthguard. 451 video confirmed impacts were recorded at 19 sparring and 11 competitive MMA events. Five concussions were diagnosed during the competitive events. …

A Two-Level Information Modelling Translation Methodology And Framework To Achieve Semantic Interoperability In Constrained Geoobservational Sensor Systems, Paul Stacey

Doctoral

As geographical observational data capture, storage and sharing technologies such as in situ remote monitoring systems and spatial data infrastructures evolve, the vision of a Digital Earth, first articulated by Al Gore in 1998 is getting ever closer. However, there are still many challenges and open research questions. For example, data quality, provenance and heterogeneity remain an issue due to the complexity of geo-spatial data and information representation.

Observational data are often inadequately semantically enriched by geo-observational information systems or spatial data infrastructures and so they often do not fully capture the true meaning of the associated datasets. Furthermore, data …

Development Of A Situational Judgement Test And An Assessment Of Its Efficacy As A Stimulus Of Metacognitive Behaviour In Engineering Students, Darren Carthy

Doctoral

Metacognition entails the conscious evaluation and control of one's cognitive processes. This meta-level control of cognitive process is not essential for all activities, but in the domain of problem solving and the development of new expertise, conscious control of mental functioning is essential to success. Previous studies have shown a relationship between metacognitive knowledge & skills and student self-regulated learning, self-efficacy and more generally, with success in academic and non-academic endeavours; they represent critical skills for an aspiring engineer to possess for their future employability. Metacognition can be stimulated by allowing students to engage and reflect on the problem-solving process. …

Inter-Microgrid Operation: Power Sharing, Frequency Restoration, Seamless Reconnection And Stability Analysis, Sandipan Patra

Doctoral

Electrification in the rural areas sometimes become very challenging due to area accessibility and economic concern. Standalone Microgrids (MGs) play a very crucial role in these kinds of a rural area where a large power grid is not available. The intermittent nature of distributed energy sources and the load uncertainties can create a power mismatch and can lead to frequency and voltage drop in rural isolated community MG. In order to avoid this, various intelligent load shedding techniques, installation of micro storage systems and coupling of neighbouring MGs can be adopted. Among these, the coupling of neighbouring MGs is the …

An Empirical Analysis To Control Product Counterfeiting In The Automotive Industry's Supply Chains In Pakistan, Saad Akhter Jaffery

Doctoral

The counterfeits pose significant health and safety threat to consumers. The quality image of firms is vulnerable to the damage caused by the expanding flow of counterfeit products in today’s global supply chains. The counterfeiting markets are swelling due to globalization and customers’ willingness to buy counterfeits, fueling illicit activities to explode further. Buyers look for the original parts are deceived by the false (deceptive) signals’ communication. The counterfeiting market has become a multi-billion industry but lacks detailed insights into the supply side of counterfeiting (deceptive side). The study aims to investigate and assess the relationship between the anti-counterfeiting strategies …

Development Of A Framework For Managing The Industry 4.0 Equipment Procurement Process For The Irish Life Sciences Sector, Shane Loughlin

Doctoral

Industry 4.0 (I4.0) brings unprecedented opportunities for Manufacturing Corporations poised to implement Digital Business models; DigitALIZAtion. Industry Standards have been developed for the core technologies of the I4.0 Digital Supply Chains. Manufacturing equipment must now be procured to integrate seamlessly at any point in these novel supply chains. The aim of this study is to determine if an I4.0 Equipment Procurement Process (I4.0-EPP) can be developed which reduces the risk of equipment integration issues. It asks; Can the form of the equipment be specified, so that it correctly fits into the I4.0 Digital Supply Chain, to facilitate the desired I4.0 …

Optical Fiber Sensors For In-Situ Detection Of Solid-Liquid Phase Change For N-Octadecane, Wei Han

Doctoral

In the past few decades solid-liquid phase change materials (PCMs) have gained an increasingly important role in thermal energy storage applications due to their ability to absorb or release large amounts of energy during melting or solidification. The precise phase change temperature varies with different conditions, such as external pressure, small variations in the PCM composition in the case of multi-component mixtures and/or material purity. In order to achieve better energy efficiency for the energy storage process, it is necessary to be able to accurately detect the solid-liquid phase changes in the bulk of a PCM.

Optical fiber sensors allow …