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On adaptive intelligent welding: technique feasibility in weld quality assurance for advanced steels
(Lappeenranta University of Technology, 2018-08-28)
The welding industry has a need to utilize lightweight steels in welded applications while maintaining acceptable weld quality. This goal can be achieved through effective quality assurance, efficient weld parameter ...
International trade in biomass for energy production: The local and global context
(Lappeenranta University of Technology, 2018-08-31)
Biomass is an important source of renewable energy in the global energy mix. International trade in biomass is increasing. It is stimulating global use of biomass for energy and promoting development of bioenergy in many ...
The role of renewable energy based seawater reverse osmosis (SWRO) in meeting the global water challenges in the decades to come
(Lappeenranta-Lahti University of Technology LUT, 2020-11-25)
Renewable energy (RE) powered desalination is rapidly gaining interest as a means to augment the increasingly stressed global water supply. This thesis introduces and describes the ways in which 100% RE-based seawater ...
Ecodesign of Construction and Demolition Waste-Derived Thermoplastic Composites
(Lappeenranta-Lahti University of Technology LUT, 2020-12-12)
The use of recycled materials in composites has been studied since the 1990s. Research has traditionally focused on technical properties, as well as the recyclability of materials. How these composites should be used or ...
Energy security evaluation for the present and the future on a global level
(Lappeenranta-Lahti University of Technology LUT, 2020-10-13)
Energy Security is a universal concern for all stakeholders and achieving energy security is a crucial objective for all societies. Therefore, energy security became a major part of national security with the ability to ...
Fluidized bed combustion and humidified gas turbines as thermal energy conversion processes of the future
(Lappeenranta-Lahti University of Technology LUT, 2020-12-14)
Growing awareness of environmental issues related to heat and electrical energy production has led to sustained research efforts to find ways to reduce fossil energy consumption and increase renewable energy usage. Future ...
Real-Time Efficient Computational Approaches for Hydraulic Components and Particulate Energy Systems
(Lappeenranta-Lahti University of Technology LUT, 2020-12-11)
The so-called fourth industrial revolution requires high-speed data transmission and application of real-time computation to the phenomena. These two technologies highlight the potential of the digital-twin concept for ...
Control design issues in grid-connected single -phase converters, with the focus on power factor correction
(Lappeenranta-Lahti University of Technology LUT, 2020-09-25)
Electrical equipment is most commonly powered from a mains connection. The mains alternating voltage is rectified, isolated, and regulated in a power supply. The power supply acts as an interface between the mains voltage ...
In-depth analysis of the global power infrastructure—Opportunities for sustainable evolution of the power sector
(Lappeenranta-Lahti University of Technology LUT, 2020-11-27)
Over the decades, the power sector has continuously evolved, and the strategy used to provide its service has changed dramatically over time and continues to do so. Therefore, it is of paramount importance to analyse in ...
Stress components and local effects in the fatigue strength assessment of fillet weld joints made of ultra-high-strength steels
(Lappeenranta-Lahti University of Technology LUT, 2020-12-04)
Ultra-high-strength steels (UHSSs) enable a significant reduction in material usage compared to mild steels and, thus, provide energy-efficient solutions for structural applications. In welded steel components, an increase ...