Engineering: Recent submissions
Now showing items 21-40 of 1343
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Domain adaptation for speaker diarisation in low-resource environments
(North-West University (South Africa)., 2022)Speaker diarisation systems aim to answer the question \who spoke when?" and are useful in providing valuable metadata to downstream applications, such as automatic speech recognition systems. However, speaker diarisation ... -
Efficacy of the distortion compensation method for Selective Laser Melting specimens
(North-West University (South Africa)., 2022)As industry 4.0 has gained momentum, the need for accurate, fast, and customizable component prototyping and fabrication has risen drastically. Additive manufacturing provides the freedom and capability to fabricate complex ... -
Biodiesel production from municipal waste using lipase catalysis
(North-West University (South Africa)., 2022)Municipal solid waste (MSW) and sewage sludge are attractive feedstocks for biofuel production through hydrothermal liquefaction (HTL) due to high moisture content, availability, and low costs. HTL has the advantage of not ... -
Groundwater quality assessment in the Ngaka Modiri Molema District using the Water Quality Index
(North-West University (South Africa)., 2022)In the conducted research, the groundwater quality of different boreholes located in the Ngaka Modiri Molema District (NMMD), more specifically Ratlou, Ditsobotla, and Tswaing local municipalities (LM), for drinking, ... -
Graph reduction techniques for exergy-based FDI on the Tennessee Eastman process
(North-West University (South Africa)., 2022)As industrial processes, which form the backbone of the industrialized world, continue to become larger and more complex, control systems require fault diagnostic schemes that can maintain plant safety and product quality, ... -
A metallurgical coke replacement derived from torrefied wood chips pre-treated by wet oxidation
(North-West University (South Africa)., 2022)The global population is ever increasing resulting in an ever-increasing energy demand and reliance of fossil fuels which has increased over the past few decades. The production of coke relies on the availability, cost and ... -
Efficacy of Vickers indentation method to measure residual stress in additively manufactured IN718 specimens
(North-West University (South Africa)., 2022)Selective laser melting of Inconel 718 powder (a nickel-based superalloy) is regularly used to manufacture gas turbine parts for the aerospace industry. Residual stresses that remain in components after manufacturing are ... -
Evaluation of the Multiple Load Sequence methodology for GFRP fatigue life prediction
(North-West University (South Africa)., 2022)The current preferred static certification method used in the sailplane industry as defined by aviation governing bodies limits the allowable service life to 12 000 Flight Hours (Fh) which is problematic for current ... -
The effects of kneading and enzymatic treatments on properties of viscose-grade dissolving wood pulp
(North-West University (South Africa)., 2022)Dissolving wood pulp (DWP) is a high-purity form of cellulose that is produced by pulping and bleaching lignocellulosic biomass to obtain a cellulose content greater than 90%. DWP is used as the feedstock for many applications ... -
Water balance development for legal compliance of gold mines in South Africa
(North-West University (South Africa)., 2022)South Africa is experiencing water scarcity due to the increase in water demand and decrease in water supply. A predicted shortfall of 17% by 2030 is prompting stricter enforcement of the National Water Act number 36 of ... -
Improving electricity forecasting processes on platinum mines
(North-West University (South Africa)., 2022)Electricity is a fundamental resource used in mining, and as a result, is a large contributor to mine working cost. It is therefore important for mines to accurately budget their electricity expenditure in order to make ... -
Development of a machine learning plant growth estimator for hydroponics
(North-West University (South Africa)., 2022)Growth stage estimation in indoor farming is crucial for precision agriculture. It reduces the wastage of resources such as nutrients and water in plant cultivation. Overly, yield and quality of the agricultural produce ... -
Development of a dewatering control strategy to prevent flooding within deep-level mines
(North-West University (South Africa)., 2022)Deep-level mines are faced with continually increasing challenges regarding heat. New mining depths are constantly reached, and working conditions are becoming intolerable and unsafe. Underground conditions must be controlled ... -
Mitigation strategies for hydrogen safety in the confined environment : CFD modelling and validation
(North-West University (South Africa)., 2022)This research is based on experimental evaluation and computational fluid dynamics (CFD) modelling validation. Full-scale tests to investigate unintended hydrogen release were conducted at the HySA Mining Platform Test ... -
The effect of cellobiohydrolase I on low consistency refining and handsheet properties
(North-West University (South Africa)., 2022)Papermaking is an energy-intensive process, with mechanical pulp refining accounting for 30% of the total electrical energy consumption during papermaking. Presently, with significant economic and environmental concerns, ... -
Development of an Industry 4.0 competency maturity model
(North-West University (South Africa)., 2022)Coined as Germany’s high-tech strategy, Industry 4.0 (I4.0) is being adopted globally and is happening exponentially. Furthermore, I4.0 impacts manufacturing processes, technology, and systems and extends to employees' ... -
Subtransmission power system amelioration through increased power transfer
(North-West University (South Africa)., 2022)This dissertation aimed to present considerations and solutions for the amelioration of subtransmission power systems through increased power transfer by reviewing various infrastructure technologies and solution approaches. ... -
An integrated ventilation and cooling strategy for mechanised deep-level mining
(North-West University (South Africa)., 2022)Planning of mine ventilation and cooling ensures acceptable environmental conditions underground. To this end, simulation-based planning tools are used for their advantages over calculation-based planning techniques. Various ... -
Applying a benchmark method to identify utility cost-saving opportunities on a platinum mine
(North-West University (South Africa)., 2022)South Africa’s energy and water demands are more significant than the supply thereof. This higher demand means Eskom cannot deliver enough power to South Africa. Furthermore, South Africa is a water-scarce country and water ... -
An investigation into the occurrence of ferroresonance in small distribution transformers in South Africa
(North-West University (South Africa)., 2022)In 2019, an article published by Geldenhuys and Padayachee reported unexpected overvoltages during the commissioning phase of distribution transformers. Consequently, resonance was reported as the cause of overvoltages on ...
