Browsing Institutt for vareproduksjon og byggteknikk by Document Types "Doctoral thesis"
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Advanced RF/microwave Systems for Sensing and Communication Applications
(Doctoral theses at NTNU;2023:191, Doctoral thesis, 2023)As the fifth generation (5G) and beyond networks as well as the Internet-of-things (IoT) continue to expand and become more prevalent in various industries, we will encounter connected devices almost everywhere. Consequently, ... -
Assessment of long-term performance of natural fibre reinforced polymer composites with recyclable polymer matrices under different environmental ageing conditions
(Doctoral theses at NTNU;2024:167, Doctoral thesis, 2024)The usage of natural fibre composites (NFCs) has been increasing recently to replace traditional composite materials in different sectors due to climate change and sustainability issues. However, natural fibres are ... -
Energy-Efficient and Low-Cost Wireless Sensor System Designs Based on Spectral Lines Analysis
(Doctoral theses at NTNU;2023:441, Doctoral thesis, 2023)This thesis presents a comprehensive investigation into the development of energy-efficient, low-cost wireless sensor systems in the context of the Internet of Things landscape. We examined two sensor technologies, microwave ... -
Facilitating information sharing within a supply chain: the blockchain framework
(Doctoral theses at NTNU;2021:282, Doctoral thesis, 2021)Firms focus on their core functions and engage in collaborative cooperation as a strategy to remain competitive. In recent decades, service industries such as providing medical check-ups and electric utilities have played ... -
Functional and Optical Properties of Structured Surfaces in Additive Manufacturing: Technologies for appearance evaluation in the quality assurance of 3D-printed polymers
(Doctoral theses at NTNU;2023:178, Doctoral thesis, 2023)Quality assurance of additively manufactured parts requires assessment of appearance and surface finish quality. Appearance investigation is a primary step to ensure that the manufactured parts meet the required structural, ... -
Geometric Accuracy in Laser- Based Powder Bed Fusion of Polymers: Tolerance optimization by part build orientation
(Doctoral theses at NTNU;2022:71, Doctoral thesis, 2022)As Additive Manufacturing (AM) enters the manufacturing industry, the technology must adhere to stringent quality demands in terms of dimensional and geometric accuracy. However, due to substantial differences in how these ... -
Harmonizing and linking conceptual models of geospatial information: Technologies for information modelling in GIS, ITS and BIM
(Doctoral theses at NTNU;2021:135, Doctoral thesis, 2021)Structured representations of phenomena from the real world in a digital geospatial environment are essential for developing, maintaining, and using the built and natural environment. In the real world, the phenomena relate ... -
Human-Centered Digital Twin Design for Industrial Symbiosis
(Doctoral theses at NTNU;2022:303, Doctoral thesis, 2022)Industrial symbiosis is a pivotal process in realizing the circular economy. Lags and the lack of information-sharing between companies prevents the symbiotic system from working properly. As a potential solution for ... -
Machine Learning of Quality Assurance in Polymer Powder Bed Fusion Additive Manufacturing
(Doctoral theses at NTNU;2020:120, Doctoral thesis, 2020)The latest developments in the field of additive manufacturing (AM) have led to the wider use of this technology for the production of end-user products. As a result, more stringent requirements are set to the quality of ... -
Mechanical performance of thermoplastic elastomers for two-component injection moulding
(Doctoral theses at NTNU, 2022:350, Doctoral thesis, 2022)The thesis is based on studies of the mechanical properties of thermoplastic elastomers (TPEs). A TPE is a soft thermoplastic polymer material with rubber-like properties. Vulcanizate TPEs (TPVs) were selected as the main ... -
Towards Intelligent Process Control for Thermoplastics Injection Molding: Machine Learning for prediction of quality of injection molded parts
(Doctoral theses at NTNU;2021:71, Doctoral thesis, 2021)Injection molding is a process that is widely used for production of plastic parts of different shapes, sizes and applications. Some of its advantages are high production rates and efficiency. However, to be able to produce ...