2023 - Publications Repository - Gdańsk University of Technology

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Publications from the year 2023

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Analysis of nonlinear eigenvalue problems for guides and resonators in microwave and terahertz technology
- Sebastian Dziedziewicz
2023 Full text
This dissertation presents developed numerical tools for investigating waveguides and resonators' properties for microwave and terahertz technology. The electromagnetics analysis requires solving complex eigenvalue problems, representing various parameters such as resonant frequency or propagation coefficient. Solving equations with eigenvalue boils down to finding the roots of the determinant of the matrix. At the beginning, one presents examples of electromagnetic problems. The following chapter investigates the effectiveness and limitations of currently available global root-finding algorithms and presents improvements to the Global Complex Roots and Poles Finding (GRPF). The proposed self-adaptive initial mesh generator for the GRPF algorithm enables the faster and more accurate zero/pole finding of complex functions. The optimization of the tracing method is proposed based on the self-adaptive discretization of Cauchy's argument principle. The limitations of tracing and the multipath problem are also discussed. Finally, a new approach to determining the curves representing roots as a function of an extra parameter is presented. The techniques proposed in each chapter reduce the analysis time and enhance the accuracy of the results. The developed tools for solving nonlinear eigenvalue problems can also be applied in other engineering fields.
Analysis of passenger car crash with a cable barrier installed with anti-glare screens on a horizontal convex road curve with 400 m radius
- Dawid Bruski
- Stanisław Burzyński
- Wojciech Witkowski
2023 INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
High-tension cable barriers have been used on roads for a relatively short period compared with other types of road barriers. Hence, there remains a need for further research on various crash scenarios. An important issue is the performance of a cable barrier on a road curve, particularly when a vehicle impacts the convex side of the barrier. To address this issue, the analysis in this study considers a system of anti-glare screens installed on a cable barrier that is often used on the horizontal curves of roads to protect drivers from the glare of the headlights of oncoming traffic. The responses of the cable barrier and car are evaluated based on a full-scale crash test and a numerical simulation. The forces in the cables during impact and the influence of the anti-glare screens on the behavior of the cables are also investigated. Additionally, an analysis of the energy absorbed by the car and barrier subparts is performed. This study confirmed that cable barriers work properly and provide the highest level of safety; the study also showed that cables have a significant safety margin and the posts contribute most toward the total dissipated energy.
Analysis of Reconstituted Tripartite Complex Supports Avidity-based Recruitment of Hsp70 by Substrate Bound J-domain Protein
- Marcin Jelen
- Igor Grochowina
- Aneta Grabinska-Rogala
- Szymon Ciesielski
- Katarzyna Dabrowska
- Bartlomiej Tomiczek
- Łukasz Nierzwicki
- Wojciech Delewski
- Brenda Schilke
- Jacek Czub
- Michal Dadlez
- Rafal Dutkiewicz
- Elizabeth Craig
- Jaroslaw Marszalek
2023 Full text JOURNAL OF MOLECULAR BIOLOGY
Hsp70 are ubiquitous, versatile molecular chaperones that cyclically interact with substrate protein(s). The initial step requires synergistic interaction of a substrate and a J-domain protein (JDP) cochaperone, via its J-domain, with Hsp70 to stimulate hydrolysis of its bound ATP. This hydrolysis drives conformational changes in Hsp70 that stabilize substrate binding. However, because of the transient nature of substrate and JDP interactions, this key step is not well understood. Here we leverage a well characterized Hsp70 system specialized for iron-sulfur cluster biogenesis, which like many systems, has a JDP that binds substrate on its own. Utilizing an ATPase-deficient Hsp70 variant, we isolated a Hsp70-JDP-substrate tripartite complex. Complex formation and stability depended on residues previously identified as essential for bipartite interactions: JDP-substrate, Hsp70-substrate and J-domain-Hsp70. Computational docking based on the established J-domain-Hsp70(ATP) interaction placed the substrate close to its predicted position in the peptide-binding cleft, with the JDP having the same architecture as when in a bipartite complex with substrate. Together, our results indicate that the structurally rigid JDP-substrate complex recruits Hsp70(ATP) via precise positioning of J-domain and substrate at their respective interaction sites - resulting in functionally high affinity (i.e., avidity). The exceptionally high avidity observed for this specialized system may be unusual because of the rigid architecture of its JDP and the additional JDP-Hsp70 interaction site uncovered in this study. However, functionally important avidity driven by JDP-substrate interactions is likely sufficient to explain synergistic ATPase stimulation and efficient substrate trapping in many Hsp70 systems.
Analysis of Residual Stresses and Dislocation Density of AA6082 Butt Welds Produced by Friction Sir Welding
- Aleksandra Laska
- Marek Szkodo
- Pasquale Cavaliere
- Dorota Moszczyńska
- Jarosław Mizera
2023 Full text METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
The Friction Stir Welding (FSW) method was employed to join AA6082 sheets. The welds were produced with different tool traverse speed (200 and 250 mm/min), rotational speed (1000 and 1250 RPM) and tool tilt angle (0 and 2 deg). Based on the analysis of XRD patterns, the total precipitation volume fractions in the nugget zones and the base material were calculated. The FSW process resulted in a reduction in the fraction of precipitates up to 64 pct compared to the parent material. Based on the Williamson–Hall analysis and indentation tests, the residual stresses were calculated. The highest tensile residual stresses of 89.09 ± 6.19 MPa were observed for the base material, and the welding process reduced the residual stresses. The calculated dislocation density in the parent material AA6082 was equal to 8.225 9 1013 m2 , while in the welds a decrease was observed up to the value of 1.419 9 1013 m2. In addition, the FSW process changed the nature of dislocations with edge-type dislocations dominating, while screw dominating character of dislocations were prevalent in the parent material. The mobility of dislocations in the studied welds was higher and reached the value of 16.78 9 10–7m/s, while the dislocation mobility in the parent material was equal to 3.19 9 10–7 m/s. Process parameters during welding have a crucial effect on the amount of heat and strains introduced during the process, and thus influence the residual stresses, dislocation density and mobility, which might have a fundamental impact on the properties of the produced welds.
Analysis of road accident causes in the voivodships in the years 2014-2021 in the aspect of socio-economic costs – towards the implementation of sustainable development
- Sylwia Pangsy-Kania
- Aleksandra Romanowska
- Marcin Budzyński
- Katarzyna Wierzbicka
- Joanna Prystrom
2023 Full text Ekonomia i Środowisko
The article addresses the topic of road safety. The objective of the research was to assess road accidents caused by voivodships. The analysis took account of the socio-economic differences in the voivodships, which deter-mine the unit costs of fatalities and injuries. A descriptive analysis is given to show the dynamics of changes in the years 2014-2021 in the voivodships and how different factors influenced change. The article analyses the relation between road safety and the region’s socio-economic development. Data availability determined the time series applied. As we know from research, accidents fall in relation to the (demographic) density of improved roads. Accidents increase, however, in relation to the density of population and GDP per capita. These relations take the opposite direction if the (demographic) fatality rate or accident severity rate (fatalities per 100 accidents) is the dependent variable. Socio-economic losses were estimated using Statistics Poland data. To value the unit costs of road accidents, the PANDORA method was used. The analysis helped to group the voivodships for their highest and lowest socio-economic costs of road accidents with a special focus on the unit costs of road deaths. The originality of the research is related to the updated voivodship level research.
Analysis of surface roughness of chemically impregnated Scots pine processed using frame-sawing machine
- Daniel Chuchała
- Kazimierz Orłowski
- Salim Hiziroglu
- Aleksandra Wilmańska
- Aleksandra Pradlik
- Karolina Miętka
2023 Full text Wood Material Science & Engineering
The objective of this work was to evaluate the effect of the impregnation process of pine wood (Pinus sylvestris L.) on roughness parameters of the surface processed on a frame sawing. The samples weredried and impregnated using a commercial procedure by a local company. The touch method withthe use of measuring stylus (pin) was employed to determine of surface roughness of the samplesconsidering parameters, namely, arithmetical mean roughness value (Ra), total height of theroughness profile (Rt), maximum height of roughness profile (Rz) and root-mean-square roughness(Rq). All measured values of the analysed surface roughness parameters were normalised by the rawdensity of wood in order to eliminate the effect of differences in wood density and moisture contentof the tested samples of impregnated and non-impregnated pine. Generally, no effect of feed pertooth was observed for the analysed values of fz1= 0.11 mm and fz2= 0.22 mm on the surfaceroughness parameters. Only for the parameter Rq of impregnated wood was a significant effect offeed per tooth observed. The effect of the pine wood impregnation process on all analysed surfaceroughness parameters was observed for both analysed feeds per tooth
Analysis of the Capability of Deep Learning Algorithms for EEG-based Brain-Computer Interface Implementation
- Kacper Ledwosiński
- Paweł Czapla
- Tomasz Kocejko
- Jo Kang-Hyun
2023
Machine learning models have received significant attention for their exceptional performance in classifying electroencephalography (EEG) data. They have proven to be highly effective in extracting intricate patterns and features from the raw signal data, thereby contributing to their success in EEG classification tasks. In this study, we explore the possibilities of utilizing contemporary machine learning algorithms in decoding brain activity signals for a quick and efficient feature extraction in a potential BCI application. Specifically, the EEG data is associated with movement imagination as well as the state of relaxation. A total of 4 models based on neural networks, with distinct structures, were implemented and evaluated on a proprietary subject-specific dataset: EEGNet, EEG Inception, Spatial-Temporal Tiny Transformer (S3T), DeepConvNet. The experiments resulted in promising prediction accuracy. However, the performance of classifiers was not evaluated for new subjects or different hardware.
Analysis of the effect of the seismic gap on the response of buildings experiencing pounding during earthquakes
- Mahmoud Miari
- Robert Jankowski
2023 AIP Conference Proceedings
The aim of this paper is to investigate the effect of the seismic gap on the dynamic response of buildings experiencing earthquake-induced pounding. Three buildings have been analysed, which are 5-storey, 7-storey and 9-storey structures. Three possible pounding scenarios have been considered, which are pounding between 5-storey and 7-storey buildings, pounding between 5-storey and 9-storey buildings and pounding between 7-storey and 9-storey buildings. Three seismic gaps between these three buildings have been investigated, which are 1 mm (contact structures), 2 cm and 2 m (separated structures). The results of the study show that the acceleration and pounding force time histories are significantly affected by the seismic gap. Moreover, not necessarily smaller gaps lead to smaller accelerations and pounding forces. It has been observed that the response is larger for small gaps in certain cases, while the response is larger for large gaps in other cases. This means that increasing the gap will not reduce the response unless it is large enough to eliminate collisions.
Analysis of the Environmental Impact of the Hull Construction of a Small Vessel Based on LCA
- Jacek Nakielski
2023 Full text Polish Maritime Research
In recent years, issues related to the impact of human activity on the natural environment have become pressing, and the challenge of global warming necessitates immediate action. To support environmental protection efforts, it has become imperative to adopt a broader perspective when evaluating various products and systems. A valuable tool for such assessments is a life cycle assessment (LCA), which enables a comprehensive analysis of the entire life cycle of a product. This paper presents a comparative analysis of the hull of a fast patrol craft, fabricated using three different materials: steel, aluminium, and composite materials. The LCA covers every stage from material production, through the construction and use of the hull, to its eventual disposal. A specific criterion was established to evaluate the impact of the hull on the environment, with clearly defined system boundaries. In the final section, we draw some conclusions that underscore the importance of reusing construction materials. By emphasising this approach, ecological footprints can be minimised and a sustainable future can be created.
ANALYSIS OF THE FEATURES OF EFFECTIVE IMPLEMENTATION OF SOLAR POWER PLANTS IN LOCAL ENERGY SUPPLY SYSTEMS
- Sergei Denysiuk
- Ryszard Strzelecki
- Ihor Bohoiko
- Natalia Strzelecka
2023 Full text POWER ENGINEERING
Показано, що відновлені джерела енергії (ВДЕ) у багатьох країнах дедалі більше домінують на ринку електроенергії, при цьому обсяги генерації електроенергії сонячними електростанціями (СЕС) останніми роками зростають рекордними темпами. Зазначено, що хоча частка ВДЕ продовжує зростати і фотоелектрична індустрія стрімко розвивається, однак галузь все ще стикається з багатьма проблемами, зокрема як продовжувати знижувати нормовану вартість енергії в СЕС (Levelised Cost of Energy, LCOE), покращити ефективність експлуатації та oбслуговування, підтримувати стабільність електромережі, забезпечити безпеку системи. Виділено базові складові ефективного функціонування електроенергетичних систем з СЕС, а саме: концепції конфігурацій фотоелектричної систем, Smart-інвертори, системи накопичення енергії (Energy Storage System, ESS), віртуальні електростанції (Virtual Power Plant, VPP) на основі СЕС. Показано, що кожна із чотирьох концепції передбачає з’єднання серії фотоелектричних панелей або стрінгів та пристроїв силової електроніки (перетворювачів постійного струму та інверторів), які налаштовані з врахуванням особливостей функціонування різних структурних (схемотехнічних) рішень. Оцінено переваги використання Smart-інверторів, як нової технології, яка може допомогти інтегрувати сонячну енергію та інші розосереджені енергетичні ресурси в електричну мережу. Smart-інвертори використовуються з метою сприяти електричній мережі справлятися з переривчастою генерацією, допомагаючи електричній мережі залишатися стабільною та підтримувати вимоги до напруги та частоти. Визначено, що у будь-якій фотоелектричній системі власне ESS стають центральним компонентом, що суттєво впливає на вартість, вимоги до обслуговування, надійність і дизайн СЕС, а важливими параметрами ESS, які впливають на роботу та продуктивність фотоелектричної системи, є вимоги щодо обслуговування акумулятора, термін служби акумулятора, доступна потужність і ефективність. Представлено тренди на ринку передових систем зберігання енергії для СЕС на наступне десятиліття. Функціонування віртуальних електростанцій на основі СЕС, як мережі агрегованих розосереджених енергетичних ресурсів, що дистанційно підключені та сумісно працюють поряд з гнучкими споживачами електроенергії, направлено на максимізацію вигод учасників. Представлено можливості та тенденції розвитку СЕС у найближчому майбутньому, які базуються на дослідженнях компанії Huawei.
Analysis of the impact of wastewater discharge on recipients: synergistic approach
- Agnieszka Kalinowska
2023 Full text
The dissertation presents the analysis of chemical and microbial composition of wastewater and examines the impact of wastewater discharge on the environment. Various case studies were analysed: from small settlements in a pristine European Arctic, to large municipal wastewater treatment plants in areas subjected to greater anthropogenic pressure. In order to comprehensively analyse the impact of wastewater discharge on the receiving waterbody, a holistic approach, combining multiple analytical methods, was chosen. The results of the study show that despite high bacterial removal rates, wastewater treatment plants based on biological methods, still release significant amounts of microorganisms into the environment. Wastewater included bacteria typical to (1) activated sludge (associated with nitrogen cycling or activated sludge bulking) or (2) to the human digestive system (including those showing antibiotic resistance). The biochemical potential and taxonomic structure of the treated wastewater microbiome varied throughout the year, reflecting seasonal fluctuations of wastewater treatment efficiency. At the same time, higher values of prokaryotic cells number, prokaryotic biomass or average cell volume were found in environmental samples influenced by wastewater discharge, compared to reference points. Additionally, this thesis proposed and validated a method for monitoring the occurrence of beta-lactam antibiotic resistance among coliform bacteria. This method can be widely used to assess the spread of antibiotic resistance.
Analysis of the Possibilities of Applying 3D Print Methods for the Needs of Ship-Building Industry
- Krzysztof Jasiński
- Marek Chodnicki
- Krzysztof Bobrowski
- Krzysztof Lipiński
- Marcin Kluczyk
- Adam Szeleziński
2023
Article presents the analysis of applying additive and hybrid manufacturing methods and its impact on dynamic stiffness of prepared samples. Dynamic analysis of the handle bracket specimens consisted in plotting the resonance curves and using these curves to estimate the dynamic stiffness of elements produced with additive manufacturing technology. Authors focused especially on 3D print in Fused Deposiotion Modeling/Fused Filament Fabrication (FDM/FFF) technology to manufacture both new, fully functional components of ships and yachts and to produce spare parts in emergency conditions when there is a need of a temporary replacement of a damaged part (e.g. on-board of a ship during its voyage, to ensure that the part lasts until the ship reaches a shipyard or a port). This paper presents results of research conducted using a dynamic analysis of specimens in the form of a handle bracket and tests conducted within the scope of strength analysis of portholes spacers mounted below the ships water line.
Analysis of the structure of the atomized fuel spray with marine diesel engine injector in the early stage of injection
- Joanna Grochowalska
- Piotr Jaworski
- Łukasz Kapusta
2023 Full text Combustion Engines
This paper presents the results of the experimental research of the atomized fuel spray with the marine diesel engine injector in the constant volume chamber. The specificity of the phenomena occurring in the marine engine cylinder was the reason to use the optical visualisation method in the studies – the Mie scattering technique. This work presents an analysis of the influence of different geometry of outlet orifice and opening pressures of marine diesel injector on the macrostructure of the fuel spray. In the results, it was observed that the increased L/D ratio of the outlet orifice of the injector caused: an increase in the spray cone angle and a decrease in the spray tip penetration in the early stage of injection. Furthermore, it was defined that the characteristic of spray tip penetration over time was power, whereas the spray cone angle over time was a logarithmic function.
Analysis of the Surface Stereometry of Alloyed Austenitic Steel after Fibre Laser Cutting using Confocal Microscopy
- Sławomir Krajewski
- Daniel Grochała
- Jacek Tomków
- Rafał Grzejda
2023 Full text Coatings
The paper extends the concept of cut edge quality and examines the fibre laser cutting process. A Prima Power Platino Fiber Evo device with a reference speed (RS) of 3500 mm/min was used for laser cutting. In order to analyse the influence of the laser cutting speed on the cut edge quality of X5CrNi18-10 stainless steel sheets, macroscopic studies were conducted on a stereoscopic microscope and surface stereometry on a confocal microscope. The obtained results were analysed to evaluate 2D and 3D parameters. These parameters make it possible to determine the cut edge quality and the susceptibility to the application of protective coatings. It was observed that the value of the Sa parameter is the highest for a cutting speed equal to 130% of RS. The Sz parameter is similar, while the Sk, Spk and Svk parameters rise as the speed increases, which is a negative phenomenon. Comparative tests were also conducted for four specimens made at cutting speeds of 70%, 85%, 100% and 115% of RS, respectively. It was found that the laser cutting speed has a significant impact on the cut edge quality and that stainless steel can be cut while maintaining the technological regime at 115% of RS.
Analysis of the Usefulness of Cheap Audio Recorders for Spectral Measurement of Environmental Noise
- Jacek Skibicki
- Roksana Licow
- Natalia Karkosińska-Brzozowska
- Karol Daliga
- Piotr Chrostowski
- Andrzej Wilk
- Krzysztof Karwowski
- Marek Szafrański
- Tadeusz Widerski
- Leszek Jarzębowicz
- Sławomir Judek
- Michał Michna
- Sławomir Grulkowski
- Julia Omilianowicz
2023 Full text Metrology
Environmental noise pollution is nowadays one of the most serious health threats. The impact of noise on the human body depends not only on the sound level but also on its spectral distribution. Reliable measurements of the environmental noise spectrum are often hampered by the very high price of top quality measuring devices. This paper explores the possibility of using much cheaper audio recorders for the frequency analysis. Comparative research was performed in laboratory and field conditions, which showed that, with some limitations, these devices can be useful in analyzing the frequency of environmental noise. This provides an opportunity for reducing the cost of noise analysis experimental work.
Analytical applications of smartphones for agricultural soil analysis
- Marek Tobiszewski
- Khrystyna Vakh
2023 Full text ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Soil is one of the most important farming resources. Appropriate managing of its quality promotes productive and sustainable agriculture. The valuable farm practice in soil quality managing is based on regular soil analysis with the aim to determine the exact amount of nutrients or other chemical, physical and biological soil properties. Soil analysis usually requires samples collection at desired sampling depth following by samples delivering to the chemical laboratories. However, laboratory analyses are resource-intensive and costly, requires a lot of time, effort, and equipment. A low-cost, fast and effective alternative for soil quality control is an application of smartphones to perform chemical analyses directly in the field or on the farm. In this paper, an overview of recent developments on smartphone-based methodologies for agricultural purposes and portable evaluation of soil quality and its properties is presented. The discussion focuses on recent applications of smartphone-based devices for the determination of basic soil parameters, content of organic matter, mineral fertilizers as well as organic or inorganic pollutants. Obvious advantages of using smartphones, such as convenience and simplicity of use, and main shortcomings such as relatively poor precision of the results obtained are also discussed. The general trend shows the huge interest of the researchers to move the technology into the field with the aim to provide cost effective and rapid soil analysis. This paper can broaden the understanding of using smartphones for chemical analysis of soil samples, as it is a relatively new area and is expected to be develop rapidly.
AngioScore: An artificial intelligence tool to assess coronary artery lesions
- Ewelina Błażejowska
- Jakub Michał Zimodro
- Tomasz Figatowski
- Adam Brzeski
- Tomasz Dziubich
- Jarosław Parzuchowski
- Aleksandra Gąsecka
- Radosław Targoński
2023 Full text Cardiology Journal
The functionality scope of the AngioScore tool in semi-automatic assessment of stenoses according to the SYNTAX scale was presented. An evaluation of the preliminary accuracy of AngioScore in lesion assessment was performed.
Anisotropic optical properties of few-layer black phosphorus coatings: from fundamental insights to opto-electrochemical sensor design
- Aleksandra Wieloszyńska
2023 Full text
Few-layer black phosphorus (FLBP) is characterised by a tuneable bandgap, high carrier mobility and anisotropic optical properties. It therefore has the potential to find applications in electronics and photonics. FLBP oxidizes upon exposure to air, limiting its utility in devices and components. To address this issue, the thesis introduces methods and tools developed for studying FLBP's optical parameters, with a particular emphasis on its potential for sensing applications. Spectroscopic ellipsometry and polarisation microscopy were utilised to characterise the optical properties of multilayer black phosphorus in relation to its degradation processes and optical anisotropy. The dissertation also employed photoluminescence and electrochemistry techniques for the characterization and evaluation of the black phosphorus-based sensor for metal ion detection. Ellipsometry was used to determine the refractive index and extinction coefficient of FLBP, demonstrating that separating and centrifuging the bulk material can yield a layer with optical parameters closely resembling those of a two-dimensional material. Polarizing microscopy studies made it possible to determine the kinetics of the black phosphorus oxidation process, thereby revealing how it modifies the polarization parameters. Polarizing microscopy studies made it possible to determine the kinetics of the black phosphorus oxidation process, which modifies the polarization parameters. For the sensor design, FLBP was combined with zinc oxide, firstly to increase the resistance of black phosphorus to degradation by oxidation, and secondly to shift the photoluminescence response of the sensor into the visible region. This approach allowed the use of silicon detector in the photoluminescent sensor, enabling the detection of zinc and magnesium ions at lower concentrations than those detected by standard solutions.
Annealing Rate as a Crucial Parameter Controlling the Photoelectrochemical Properties of AuCu Mosaic Core–Shell Nanoparticles
- Wiktoria Lipińska
- Adrian Olejnik
- Jakub Karczewski
- Katarzyna Grochowska
- Katarzyna Siuzdak
2023 Energy Technology
Thermal processing is an essential step during the synthesis of various metal nanostructures and for tailoring their morphology, optical, and electrochemical properties. Herein, a profound impact of the annealing rate and time on photoactivity of gold–copper nanostructures by changes in the position and alignment of energy levels and surface states is reported. AuCu nanoparticles (NPs) are fabricated by sputtering of thin metal layers on the Ti nanopatterned foil followed by slow (0.67 °C s−1) or fast (30 °C s−1) treatment in the rapid thermal annealing furnace and then utilized as photoanodes. Photocurrent in the visible range of the slow-heated AuCu materials is 77 times higher, whereas for the fast heated 24 times higher than for pure Ti platform. On the other hand, the fast-heated material exhibits higher photon-to-current efficiency, longer recombination rate which reaches 10s, and higher carrier transport rate of 150 μs. Based on the simulated projected local density of states analysis and the characteristics of intensity-modulated spectra, this phenomenon is attributed to the presence of deeper midgap states in the electronic band structure for the fast-heated samples. Furthermore, photocurrent is enhanced by the presence of Au inside NPs, which increases tunneling across copper oxides junction.
Antecedents and outcomes of social media fatigue
- Anna Baj-Rogowska
2023 Full text Information Technology & People
Purpose – This study aims to explore which of four chosen factors (i.e. privacy concerns, FoMO, self-disclosure and time cost) induce a feeling of strain among Facebook users in terms of social media fatigue (SMF), and if this occurs, whether it further influences such outcomes as discontinuance of usage (DoU) and interaction engagement decrement (IED). Design/methodology/approach – Through an online structured questionnaire, empirical data were gathered to verify the research model, based on the stressor-strain-outcome (SSO) framework. The SEM technique was employed for assessing the hypothesized relationships. Findings – The findings show that privacy concerns and time cost are strong antecedents of SMF and contribute significantly to its occurrence; while FoMO and self-disclosure do not exhibit any significant influence. Moreover, SMF positively and significantly affects DoU and IED. Practical implications – This study enhances the existing body of knowledge on SMF and it can help: (1) individuals to be aware of risks and adjust their activities in balance with their well-being, and (2) social media (SM) managers to develop unique strategies to address the specific needs of SM users. Originality/value – This research contributes to the limited literature on SMF by (1) introducing the concept of IED – as a consequence of SMF, and (2) creating measurement scales for IED.