Browsing NTNU Open by Author "Krauklis, Andrejs"
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A Simplistic Preliminary Assessment of Ginstling-Brounstein Model for Solid Spherical Particles in the Context of a Diffusion-Controlled Synthesis
Krauklis, Andrejs; Dreyer, Ilo (Journal article; Peer reviewed, 2018)Wet precipitation (WP) is a diffusion-controlled synthesis method, which is often used for synthesizing such compounds as hydroxyapatite (HAp). Since the process is limited by diffusion, the choice of a diffusion model ... -
Anisotropic fluid diffusion in carbon fiber reinforced composite rods: Experimental, analytical and numerical study
Gagani, Abedin; Krauklis, Andrejs; Echtermeyer, Andreas (Journal article; Peer reviewed, 2018)Carbon fiber composite plastic (CFRP) rods immersed in water present a pronounced anisotropic diffusion behavior. Understanding and predicting this behavior is important as the mechanical properties of the material are ... -
Environmental Aging of Constituent Materials in Fiber-Reinforced Polymer Composites
Krauklis, Andrejs (Doctoral theses at NTNU;2019:215, Doctoral thesis, 2019)Fiber-reinforced polymer (FRP) composites have seen a rapid rise in use in the past 50 years due to their high strength, stiffness, relatively light weight and relatively high corrosion resistance, especially when compared ... -
Environmental Durability of Composite Materials – Analytical Modelling Toolbox
Krauklis, Andrejs (Chapter, 2018)Environmental durability is highly important for fibre reinforced polymer composite materials in marine and offshore applications, especially the long-term behaviour. Typically, a design lifetime of offshore composite ... -
Illite clay modified with hydroxyapatite – innovative perspectives for soil remediation from lead(II)
Ozola, Ruta; Krauklis, Andrejs; Burlakovs, Juris; Vincevica-Gaile, Zane; Rudovica, Vita; Trubaca-Boginska, Anna; Borovikova, Diana; Bhatnagar, Amit; Vircava, Ilze; Klavins, Maris (Journal article; Peer reviewed, 2017)Clay with its properties plays an important role in various processes including those which are related to soil fertility and solution of environmental pollution problems. Clay is a widespread natural resource which can ... -
Mechanism of Yellowing: Carbonyl Formation during Hygrothermal Aging in a Common Amine Epoxy
Krauklis, Andrejs; Echtermeyer, Andreas (Journal article; Peer reviewed, 2018)Epoxies are often exposed to water due to rain and humid air environments. Epoxy yellows during its service time under these conditions, even when protected from UV radiation. The material’s color is not regained upon ... -
Multiscale Modelling of Environmental Degradation—First Steps
Echtermeyer, Andreas; Gagani, Abedin; Krauklis, Andrejs; Mazan, Tobiasz (Chapter, 2018)Fibre-reinforced plastics are praised for their good corrosion resistance. However, when this resistance needs to be documented for safety-critical applications extensive and time-consuming test programmes are needed. A ... -
Near-Infrared Spectroscopic Method for Monitoring Water Content in Epoxy Resins and Fiber-Reinforced Composites
Krauklis, Andrejs; Gagani, Abedin; Echtermeyer, Andreas (Journal article; Peer reviewed, 2018)Monitoring water content and predicting the water-induced drop in strength of fiber-reinforced composites are of great importance for the oil and gas and marine industries. Fourier transform infrared (FTIR) spectroscopic ...