A5049260475- Additive Manufacturing and 3D Printing Technologies
- Innovations in Concrete and Construction Materials
- Carbon Nanotubes in Composites
- Smart Materials for Construction
- Material Properties and Applications
- Textile materials and evaluations
- Electron and X-Ray Spectroscopy Techniques
- Mechanical Behavior of Composites
- 3D Surveying and Cultural Heritage
- Industrial Vision Systems and Defect Detection
- Advanced Materials and Mechanics
- Polydiacetylene-based materials and applications
- Synthesis and properties of polymers
- Heat Transfer and Optimization
- Layered Double Hydroxides Synthesis and Applications
- Dyeing and Modifying Textile Fibers
- Numerical methods in inverse problems
- Thermal properties of materials
- Luminescence and Fluorescent Materials
- Flame retardant materials and properties
- Nanotechnology research and applications
- Color Science and Applications
- Tribology and Wear Analysis
- Concrete Corrosion and Durability
- Structural Behavior of Reinforced Concrete
University of Latvia
2020-2024
Institute for Polymer Mechanics
2016
During this study, the resistivity of electrically conductive structures 3D-printed via fused filament fabrication (FFF) was investigated. Electrical characterisation performed on various structural levels whole body, starting from single traxel (3D-printed track element), continuing with monolayer and multilayer formation, finalising hybrid a basic nonconductive polymer an one. Two commercial materials were studied: Proto-Pasta Koltron G1. It determined that geometry influenced all...
Applying science communication models, the activities of scientists in physics research laboratories at University Latvia covering period from April 2023 to May 2024 were analysed. The author aims understand how communicate public and through which models this occurs. Research methods included analysis “European Researchers’ Night 2023” event, project reports, surveys regarding their involvement attitudes towards communication, semi-structured interviews with department laboratory heads....
Experimental research of the moisture sorption process 12 typical filaments used for FFF was performed in atmospheres with a relative humidity from 16 to 97% at room temperature. Materials high capacity were revealed. Fick’s diffusion model applied all tested materials, and set parameters found. The solution second equation two-dimensional cylinder obtained series form. Moisture isotherms classified. diffusivity dependence on evaluated. coefficient independent atmosphere six materials. It...
Abstract An assessment of accumulated irreversible strains in polymer composites is a crucial element for controlling dimensional stability structural components and their remnant life. The residual as functions total creep are analyzed by example creep‐recovery data polypropylene (PP)/multiwall carbon nanotube (MWCNT) composites. To cover wide range strains, test regimes with different stresses, loading time, number cycles were applied. Totally, 62 single tests 7 material compositions used...
Abstract The creep-recovery behaviour of two types high density polyethylene (HDPE) filled with multiwall carbon nanotubes (MWCNT) is investigated. Nanocomposites various contents MWCNT were produced by using a commercially available masterbatch aimed to transfer the gained knowledge an assessment properties industrial-scale products. are characterized improved creep resistance compared neat polymers. Incorporation 10 wt.% into polymers resulted in decrease and residual strains for more than...
The electrical conductivity of glass fiber-reinforced plastic (GFRP) with epoxy matrix modified by multiwall carbon nanotubes (MWCNT) was studied. nanomodified lamina and multi-layered GFRP investigated on several levels using a structural approach. Components the tensor for unidirectional-reinforced monolayer were calculated similarly as in micromechanics matrix. multilayer composite laminate theory compared values measured experimentally various fiber orientation angles. Calculated...
This study investigated the moisture absorption and mechanical degradation of epoxy-based polymer systems with Mg-Al/NO
The prototype of removable visual impact indicator for thermoset polymer composite materials is developed, and its characteristics are experimentally determined. a fabric tape glued by epoxy to the surface composite. impregnated with composition that provides response at place an on surface. Ball-drop tests demonstrated increase magnitude energy different substrate hardnesses. shelf-life mode storage until commissioning Peel showed ability remove used without damaging
The effect of ultraviolet (UV) exposure on the service-life thermochromic microcapsules integrated into epoxy matrix was investigated. formaldehyde shell contain core leuco dye. Seven sets resin samples filled with concentrations from 0 to 10 wt.% were composite exposed UV for approximately 1000 h. For quantitative evaluation colour change under UV, a fast and simple original procedure based samples’ image treatment developed. With time intervals 50 h, taken out light chamber evaluate their...