Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections

Permanent URI for this collectionhttps://hdl.handle.net/20.500.13091/3

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Epichlorohydrin-Crosslinked NaNO-TiO2/Plum Kernel Shell/Chitosan Hydrogel Beads for the Efficient Removal of Hexavalent Chromium from Aqueous Solutions
(ISRES Publishing, 2025) Parlayıcı, Ş.; Pehlivan, E.
The removal of hexavalent chromium [Cr (VI)] from industrial wastewater remains a significant environmental challenge due to its extreme toxicity and serious risks to both human health and the ecosystem. This study aims to develop and evaluate a sustainable and efficient adsorbent for Cr (VI) removal from aqueous solutions. To achieve this, composite hydrogel beads composed of nano-TiO2, plum kernel shell, and chitosan were synthesized using a sol-gel method and crosslinked with epichlorohydrin (nTiO2–PKS–Cts@ECH). The morphological and structural characteristics of the biosorbent were analyzed using scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR). Important operational factors, such as pH, adsorbent dose, contact time, and starting Cr (VI) concentration, were optimized using batch adsorption experiments. The equilibrium data were evaluated using the Langmuir, Freundlich, and Dubinin–Radushkevich isotherm models, with the Langmuir model showing the best fit, indicating monolayer adsorption and a maximum capacity of 97.09 mg/g. Kinetic analysis demonstrated that the adsorption process followed a pseudo-second-order model, suggesting that chemisorption, electrostatic attraction, and reduction collectively constitute the rate-limiting steps. Overall, the findings highlight the high potential of nTiO₂–PKS–Cts@ECH as a promising and eco-friendly biosorbent for the effective removal of Cr (VI) from contaminated water systems. © 2025 Published by ISRES Publishing: www.isres.org.
Parametric Exploration of Natural Lighting and Visual Comfort in Contemporary Additions to Historic Buildings
(Solarlits, 2025) Şenalp, M.; Köymen, E.; Yaşa, E.; Başar, M.E.
The re-functioning of historical buildings frequently necessitates new additions. This is particularly relevant for historical buildings with open courtyards, where interventions often involve the installation of upper covers using contemporary materials and techniques This issue can become especially apparent in historical buildings that are completely enclosed with transparent materials, raising concerns about the greenhouse effect and its potential to compromise indoor comfort. In this context, the objective of this study is to develop a methodology and model to assessing and optimizing roof covering designs. The model consists of two phases. The first phase involves conducting a visual harmony analysis within the developed algorithm, using parametric model pattern alternatives created in Rhinoceros3D/Grasshopper3D. The second phase focuses on optimizing visual comfort parameters, including sDA, UDIuseful, UDIupper and DGP. The optimal pattern is determined by evaluating a variety property of transparent surfaces such as solar heat gain, light transmittance, and area using the Ladybug, Honeybee plugins. The options constitute via Colibri plugin. The case study chosen for this investigation is one of Mimar Sinan’s building in Istanbul. This choice is motivated by the increasing intervention of enclosed to open courtyards in madrasah buildings from this era. The construction system is proposed to use steel, with ETFE for the transparent surfaces. Consequently, the outcomes demonstrate the model is feasible for interventions. © 2025 The Author(s).
Study of Same-Sign W Boson Scattering and Anomalous Couplings in Events with One Tau Lepton from PP Collisions at TeV
(Springer Science and Business Media Deutschland GmbH, 2025) Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Bergauer, T.; Chatterjee, S.; Makarenko, V.
A first study is presented of the cross section for the scattering of same-sign W boson pairs via the detection of a τ lepton. The data from proton-proton collisions at the center-of-mass energy of 13 TeV were collected by the CMS detector at the LHC, and correspond to an integrated luminosity of 138 fb−1. Events were selected that contain two jets with large pseudorapidity and large invariant mass, one τ lepton, one light lepton (e or μ), and significant missing transverse momentum. The measured cross section for electroweak same-sign WW scattering is times the standard model prediction. In addition, a search is presented for the indirect effects of processes beyond the standard model via the effective field theory framework, in terms of dimension-6 and dimension-8 operators. © The Author(s) 2025.
Citation - Scopus: 1
Search for the Rare Decay (Formula Presented) in Proton-Proton Collisions at (Formula Presented)
(American Physical Society, 2025) Tchekhovski, V.; Hayrapetyan, A.; Makarenko, V.; Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Druzhkin, D.
A search for the rare decay (Formula presented) is reported using proton-proton collision events at (Formula presented) collected by the CMS detector in 2022-2023, corresponding to an integrated luminosity of (Formula presented). This is the first analysis to use a newly developed inclusive dimuon trigger, expanding the scope of the CMS flavor physics program. The search uses (Formula presented) mesons obtained from (Formula presented) decays. No significant excess is observed. A limit on the branching fraction of (Formula presented) at 95% confidence level is set. This is the most stringent upper limit set on any flavor changing neutral current decay in the charm sector. © 2025 CERN, for the CMS Collaboration.
Development of Systematic Uncertainty-Aware Neural Network Trainings for Binned-Likelihood Analyses at the LHC
(Springer Nature, 2025) Druzhkin, D.; Borshch, V.; Babaev, A.; Uzunian, A.; Slabospitskii, S.; Kachanov, V.; Tchekhovski, V.
We propose a neural network training method capable of accounting for the effects of systematic variations of the data model in the training process and describe its extension towards neural network multiclass classification. The procedure is evaluated on the realistic case of the measurement of Higgs boson production via gluon fusion and vector boson fusion in the ττ decay channel at the CMS experiment. The neural network output functions are used to infer the signal strengths for inclusive production of Higgs bosons as well as for their production via gluon fusion and vector boson fusion. We observe improvements of 12 and 16% in the uncertainty in the signal strengths for gluon and vector-boson fusion, respectively, compared with a conventional neural network training based on cross-entropy. © CERN for the benefit of the CMS Collaboration 2025.
A Method for Correcting the Substructure of Multiprong Jets using the Lund Jet Plane
(Springer Science and Business Media Deutschland GmbH, 2025) Hayrapetyan, A.; Makarenko, V.; Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Benato, L.; Sosnov, D.
Many analyses at the CERN LHC exploit the substructure of jets to identify heavy resonances produced with high momenta that decay into multiple quarks and/or gluons. This paper presents a new technique for correcting the substructure of simulated large-radius jets from multiprong decays. The technique is based on reclustering the jet constituents into several subjets such that each subjet represents a single prong, and separately correcting the radiation pattern in the Lund jet plane of each subjet using a correction derived from data. The data presented here correspond to an integrated luminosity of 138 fb−1 collected by the CMS experiment between 2016–2018 at a center-of-mass energy of 13 TeV. The correction procedure improves the agreement between data and simulation for several different substructure observables of multiprong jets. This technique establishes, for the first time, a robust calibration for the substructure of jets with four or more prongs, enabling future measurements and searches for new phenomena containing these signatures. © The Author(s) 2025.
A Multidimensional Analysis of the 21st Century Competencies Scale through AI-Driven Data Mining Techniques
(Nature Research, 2025) Koklu, N.
In recent years, evaluating competencies such as knowledge, practical skills, character traits, and meta-learning capabilities has gained increasing importance in educational research. As educational datasets grow larger and more complex, machine learning offers promising tools for analyzing student responses and identifying patterns that support assessment processes. This study aims to classify student responses collected through the 21st Century Competencies Scale using a variety of machine learning algorithms, including SVM, ANN, k-NN, RF, LR, DT, AdaBoost, Gradient Boosting, and XGBoost. The dataset contains responses from 616 participants and covers four key sub-dimensions. Model performance was measured using accuracy, precision, recall, and F1-score. Grid search optimization was also applied to improve performance. The highest classification accuracy was achieved by LR in the “Character” sub-dimension (78.73%), followed by SVM in the “Skills” (78.58%) and overall scale (74.51%). Gradient Boosting and k-NN models also showed competitive results across multiple dimensions. These findings emphasize the effectiveness of machine learning, particularly when combined with parameter optimization, in supporting data-driven educational assessments. © The Author(s) 2025.
Integrating Auditory Perception into Architectural Education and Design
(Polish Mineral Engineering Society, 2025) Erdogan, E.; Erdoğan, H.A.
This study extends the scope of architecture beyond visual perception by exploring the parallelism between visual and auditory experiences. It aims to examine the potential outcomes of integrating auditory elements into the design process. Investigating the relationship between auditory stimuli and architecture within the context of design language, the study adopts an experimental approach to explore various dimensions, such as the interaction between sound and architectural thinking and its influence on design processes. Through two-and three-dimensional abstractions of auditory compositions—processed as non-visual design inputs—the study seeks to enhance students' creative thinking capacities. In this context, it examines how variations in auditory tones and stylistic changes influence basic design exercises and architectural reflections. The research consists of an experimental study involving 14 students from the Department of Interior Architecture and Environmental Design, Faculty of Fine Arts, at Selcuk University. Over several weeks, students were exposed to two distinct auditory environments—one characterized by harmony and balance, the other by intensity and dynamism—and tasked with creating designs based on rhythm and structure. To strengthen the study and obtain more objective data, an additional phase was introduced, where the same participants were assigned a different design task—furniture design—following the same methodological approach. This allowed for a comparative analysis of how auditory influences extended across different design contexts. To analyze the relationship between auditory input and basic design, as well as its impact on architectural form, the collected data were systematically structured. The findings indicate that in two separate experiments conducted with the same participants, individuals produced softer lines and forms when exposed to more harmonious stimuli, whereas they preferred sharper, more rigid lines and forms when engaging with high-intensity auditory input. © 2025, Polish Mineral Engineering Society. All rights reserved.
Machining Performance Analysis and Optimization in the Milling of Mold Steel under MQL with Nanofluid
(Taylor and Francis Ltd., 2025) Aydın, M.; Günay, Y.; Yapan, Y.F.; Livatyali, H.; Uysal, A.
The presented study investigates the milling performance of DIN-1.2738 steel under various cutting speeds, feeds, dry, minimum quantity lubrication (MQL) and nanographene-reinforced nanofluid-assisted MQL (N-MQL) cutting conditions. The results of cutting temperature, cutting force, feed force and surface roughness were obtained using a full-factorial experimental design. Under the N-MQL cutting conditions, the cutting temperature, cutting force, feed force and surface roughness improved by 30.1%, 22.3%, 26.3% and 40.2%, respectively. The most effective parameters for cutting temperature, feed force and surface roughness turned out to be the cooling conditions, with 81.6%, 41.7% and 72% contribution ratios, respectively. Also, feed had the strongest effect on cutting force, with a 44.7% contribution ratio. Using different weight ratios, the Gray Wolf algorithm optimized the milling parameters and cooling conditions for output parameters. The optimization process used five scenarios, weight-prioritizing each output parameter and incorporating the entropy method. The optimum cutting condition and feed were 1% Graphene N-MQL and 0.04 mm/rev across all scenarios. The optimal cutting speeds varied based on different priorities. © 2025 Taylor & Francis Group, LLC.
Enhancing Adaptive Sports Training through Bespoke Virtual Reality Games: the Case of Adaptive Hockey and Soccer
(Association for Computing Machinery, Inc, 2025) Akhoroz, M.; Erdoǧan, K.; Yildirim, C.
The growing accessibility of virtual reality (VR) technology presents new possibilities for individuals with physical disabilities to engage in adaptive sports training. This paper reports on a qualitative study exploring the perceptions, experiences, and feedback of athletes with physical disabilities after interacting with bespoke VR games for two adaptive sports, namely Volt Hockey and Power Soccer. Results indicated that participants view VR as a valuable tool for overcoming physical and logistical barriers to practice, enhancing skill development, and promoting sustained engagement with their sport. At the same time, participants identified key challenges related to equipment accessibility, physical comfort, input responsiveness, and the need for multiplayer functionality. This study highlights the potential of bespoke VR games to complement traditional adaptive sports training and underscores the importance of user-centered design practices in designing and developing accessible and meaningful VR experiences for people with disabilities. Our findings offer practical insights for developers, designers, and researchers aiming to support equal access to adaptive sports training through VR technology. © 2025 Copyright held by the owner/author(s).
Search for New Physics in Jet Multiplicity Patterns of Multilepton Events at (Formula Presented)
(American Physical Society, 2025) Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Bergauer, T.; Chatterjee, S.; Makarenko, V.
A first search for beyond the standard model physics in jet multiplicity patterns of multilepton events is presented, using a data sample corresponding to an integrated luminosity of (Formula presented) of 13 TeV proton-proton collisions recorded by the CMS detector at the LHC. The search uses observed jet multiplicity distributions in one-, two-, and four-lepton events to explore possible enhancements in jet production rate in three-lepton events with and without bottom quarks. The data are found to be consistent with the standard model expectation. The results are interpreted in terms of supersymmetric production of electroweak chargino-neutralino superpartners with cascade decays terminating in prompt hadronic (Formula presented)-parity violating interactions. © 2025 CERN, for the CMS Collaboration.
Observation of Coherent (Formula Presented) Meson Photoproduction in Ultraperipheral PbPb Collisions at (Formula Presented)
(American Physical Society, 2025) Tchekhovski, V.; Hayrapetyan, A.; Makarenko, V.; Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Druzhkin, D.
The first observation of coherent (Formula presented) meson photoproduction off heavy nuclei is presented using ultraperipheral lead-lead collisions at a center-of-mass energy per nucleon pair of 5.36 TeV. The data were collected by the CMS experiment and correspond to an integrated luminosity of (Formula presented). The (Formula presented) meson signals are reconstructed via the (Formula presented) decay channel. The production cross section is presented as a function of the (Formula presented) meson rapidity in the range (Formula presented), probing gluons that carry a fraction of the nucleon momentum ((Formula presented)) around (Formula presented). The observed cross section exhibits little dependence on rapidity and is significantly suppressed, by a factor of (Formula presented), compared to a baseline model that treats a nucleus as a collection of free nucleons. Theoretical models that incorporate the nuclear shadowing effect generally provide a better description of the (Formula presented) data than those incorporating gluon saturation. This study establishes a powerful new tool for exploring nuclear effects and nuclear gluonic structure in the small-(Formula presented) regime at a unique energy scale bridging the perturbative and nonperturbative quantum chromodynamics domains. © 2025 CERN, for the CMS Collaboration.
Simulation-Based Analysis of Bus Scheduling Problem for Mixed Fleets: Effects of Flexibility Strategies on Delay Performance
(Institute of Electrical and Electronics Engineers Inc., 2025) Çölbay, K.; Engin, O.
Improving the reliability of public transportation services plays a critical role in solving urban mobility problems. This article addresses the scheduling problem of a mixed fleet consisting of buses with different capacities (solo and articulated). The main objective of the study is to minimize operational delays and total waiting time by dynamically assigning bus types according to passenger demand. To solve this NP-hard problem, a simulation model was developed in the Python programming language based on real-time trip data from the urban transportation network in Türkiye. The model compared three different assignment algorithms: rigid assignment, flexible substitution, and special waiting flexible substitution. Performance was measured using metrics such as the number of delayed trips, total delay time, and passenger-weighted delay time. The results revealed that flexible assignment strategies significantly impact operational performance and that there is a trade-off between the frequency and duration of delays. The special waiting flexible assignment algorithm caused the fewest delays, but the total duration of these delays was the longest. This study demonstrates the effectiveness of simulation as a decisionsupport tool in solving complex scheduling problems and provides a quantitative perspective for public transportation operators to determine strategies based on service quality priorities. © 2025 IEEE.
Shear Behavior of Reinforced Concrete Beams Strengthened With a 45° Inclined MSS Technique: Parametric Study of Shear Span-To Ratio and Beam Height
(Taylor and Francis Ltd., 2025) Aksoylu, C.; Fadimana, Bas; Uysal, Y.; Basaran, B.; Arslan, M.H.; Özkılıç, Y.O.
Current methods for strengthening reinforced concrete beams with insufficient shear capacity have structural and practical limitations. This study experimentally investigated the performance of a 45° inclined Mechanical Steel Stitches (MSS) technique under four-point loading. 17 beams (3 reference, 14 strengthened) with shear span-to-depth ratios (av/d = 2.5, 3.3, 4.9) and section heights (250, 360 mm) were tested, while a group with av/d = 3.3 and 250 mm height was adopted from the literature for comparison. Beams were evaluated in terms of maximum load, displacement, energy dissipation, stiffness, ductility, and failure modes. Results showed that MSS was highly effective, particularly at low av/d ratios. The maximum capacity increase reached 86.2% for av/d = 2.5, decreasing to 50.6% at av/d = 3.3 and 14.9% at av/d = 4.9, where diagonal cracks intersecting MSS anchor holes limited the contribution. The optimum MSS spacings were determined as d/2.5 for av/d = 2.5 and d/5 for av/d = 3.3 and 4.9. Increasing beam height from 250 to 360 mm reduced MSS effectiveness by 5.4–27.5%. All reference beams failed in brittle diagonal tension, while strengthened beams exhibited splitting (43%) or combined diagonal tension–splitting (29%). Decreasing MSS spacing shifted failure from diagonal tension to splitting. Overall, the inclined MSS technique proved effective and practical for strengthening shear-deficient beams, offering guidance for design and application. © 2025 Taylor & Francis Group, LLC.
Citation - Scopus: 2
Cyanidation of Tailings of an Artisanal Small-Scale Gold Mining at Arbaat Region in Red Sea State, Sudan
(Chamber of Mining Engineers of Turkey, 2023) Alkloos, B.A.; Aydoǧan, S.
In this study, the leaching of gold from an artisanal small-scale gold mining (ASGM) tailings in the Arbaat region of Sudan was investigated by agitated cyanide leaching, considering the parameters stirring speed, NaCN concentration, solid-liquid ratio, temperature and pH. The characterization studies showed that the tailings sample mainly formed from silicate minerals and the sample contained 77.10% SiO2, 8.08% Al2O3, 5.76% Fe2O3, 1.67% CaO, 1.10% Na2O, 0.97% K2O and 4.366% loss on ignition. The results of leaching studies indicated that gold dissolution decreases with increasing solid ratio. Furthermore, the gold leaching positively influenced by the NaCN concentration in the range of 0.05-0.50 g/L and by the pH in the range of 10.00-10.30. However, at pH values greater than 10.30, the gold leaching decreased. The temperature and stirring speed also affected gold leaching in different ways. The leaching studies revealed that it is very simple to apply the cyanide leaching to the tailings and a gold recovery value of 87.5% could easily be reached. Commercially, this study reported an economically feasible process for gold recovery from an artisanal small-scale gold mining tailings in Arbaat. © 2023 Chamber of Mining Engineers of Turkey. All rights reserved.
Oncoidal Facies Across the Carboniferous-Permian Transition (Hadim Nappe, Southern Türkiye): Paleoenvironmental Implications and Correlations
(Wiley, 2025) Akbas, Melikan
The cortoid and/or oncoid-bearing carbonates of the Girvanella Limestone Facies of the Hadim Nappe that were deposited during the early-middle Gzhelian-middle Asselian time interval are represented by a succession that laterally extends over dozens of kilometres and is up to 60 m thick. This facies is easily distinguishable from the facies above and below and is considered a significant sedimentological marker unit by its lithological properties (e.g., brownish-red colour and large oncoids). Eight microfacies types are recognised from the Girvanella Limestone Facies: cortoid grainstone/floatstone, cortoid-bioclastic grainstone/rudstone, cortoid-aggregate grainstone, bioclastic grainstone to packstone, oncolite packstone/rudstone, oncoid grainstone/floatstone, mudstone/wackestone, and algal fenestral bindstone that are indicative of moderate to high-energy shallow marine carbonate platform settings (e.g., sand shoals and bank zone and lagoon-peritidal zone). Oncoid-bearing facies across the Carboniferous-Permian transition in the Hadim Nappe show a well correlation with similar deposits from South China, Iran, Mexico, Carnic Alps (Austria), and Japan. This widespread and synchronised deposition of the oncoid-bearing facies corresponds to the major phase (Glacial period III) of the Late Palaeozoic Gondwana glaciation and global sea-level drop associated with this glaciation.
Enhancing the Capacity of Wide-Span Steel Frames Using External Post-Tensioning Cables
(MDPI, 2025) Kocer, Mustafa; Sen, Huseyin
Steel portal frames are widely used in industrial buildings due to their high strength-to-weight ratio and rapid erection capability. However, many existing structures exhibit insufficient load-carrying capacity under current design requirements. This study investigates the use of external post-tensioning (PT) cables and rigid wedge anchorages to enhance the overall performance of steel portal frames. Two stages of numerical analysis were performed: (i) two-dimensional parametric studies to identify the most efficient configuration and (ii) three-dimensional verification under combined gravity, wind, and seismic loading conditions. Results show that the proposed PT system significantly increases the load-carrying capacity of both beams and columns, reduces bending demands, and improves global stability without major geometric modification. The strengthening method is safe, reversible, and offers a practical alternative to conventional welded or plated retrofit techniques.
A Review of BLDC Motors: Types, Application, Failure Modes and Detection
(MDPI, 2025) Sen, Mehmet; Mutluer, Mumtaz
Brushless DC (BLDC) motors are widely used in many engineering fields such as transportation, industrial automation, pumping systems, household devices, and renewable energy applications. Their popularity mainly arises from advantages like high power density, low noise, long service life, and high efficiency. This study contributes to the literature by comprehensively addressing the types, applications, faults, and diagnostic methods of BLDC motors. This review systematically examines recent studies to identify and classify common mechanical, electrical, magnetic, thermal, and sensor-related faults. Diagnostic approaches reported in these studies are then analyzed and compared. The methods are grouped into several categories, including signal processing, model-based, data driven, artificial intelligence-supported, and thermal or magnetic monitoring techniques. The review results show that hybrid and intelligent diagnostic strategies, which combine different analysis methods, significantly improve the accuracy of fault detection and enable earlier fault identification. These improvements also contribute to higher reliability and safer operation of BLDC systems. In the discussion, attention is given to the growing use of artificial intelligence and data fusion in fault diagnosis. These trends are likely to guide the next generation of condition monitoring systems for BLDC motors. Overall, this study emphasizes the importance of developing reliable and sustainable diagnostic frameworks to enhance energy efficiency and system performance. The results can provide a useful reference for researchers and engineers working on BLDC motor technologies.
Effect of Rehabilitative Wall-Foundation Anchorage Types on the Seismic Behaviour of Weak Reinforced Concrete Frames
(MDPI, 2025) Yavuz, Gunnur; Kaltakci, M. Yasar
Installing shear walls in a load-bearing system is one of the most rational, economical, and effective strengthening methods for improving a building system that is vulnerable to seismic effects. One of the most significant points to consider in a reinforced concrete building strengthened with a shear wall is the sufficiency and reliability of anchorage elements in the shear wall-foundation joints, where significant bending moments will occur due to the impact of lateral loads. This study investigated the behaviour of different foundation anchorage methods, including internal anchorage (anchor bars) and external anchorage (steel angle and carbon-fibre-reinforced polymer (CFRP)) applied at the wall-foundation interface in retrofitted weak reinforced concrete frames, which were multi-span, multi-storey, lacking sufficient seismic detailing, and strengthened using wing-type shear walls, under quasi-static lateral loading. It was also aimed to determine the most effective anchorage method for improving the structural performance. A total of six undamaged, but seismically deficient, two-storey, two-span reinforced concrete frames were strengthened with added shear walls that incorporated different anchorage details at the shear wall-foundation joint. According to the test results, the addition of wing-shaped reinforced concrete rehabilitative walls significantly increased the lateral load-carrying capacity, lateral stiffness, and energy dissipation capacity of reinforced concrete frames with poor seismic behaviour. It was observed that additional strengthening was not required in the edge columns of frames with rehabilitative walls of a sufficient length, but that additional measures were required in the foundation anchors at the base of the strengthening wall due to the further increase in the rehabilitative wall capacity. Consequently, the most suitable shear wall foundation anchorage arrangement was achieved with test specimens where one internal anchor bar was used for each vertical shear reinforcement, independently of the shear wall length, and the development length was the highest.
Investigation of Erosion Wear Behavior and Incubation Period of 3D-Printed ABS, PLA and Nylon-CF
(Emerald Group Publishing Ltd, 2025) Aydin, Mehmet Esat; Ozturk, Osman; Bagci, Mehmet
PurposeThis study aims to investigate the erosion wear behavior of three-dimensional (3D)-printed Acrylonitrile Butadiene Styrene (ABS), Polylactic acid (PLA) and Nylon-CF (Nylon Carbon Fiber) parts with jet impingement test using alumina (Al2O3) particles. The effects of build orientation and impingement angle on erosion wear behavior were investigated.Design/methodology/approachABS, PLA and Nylon test specimens with build orientations of 0 degrees, 45 degrees and 90 degrees were fabricated using a 3D printer. Erosion wear tests were conducted on these specimens at impingement angles of 30 degrees, 60 degrees and 90 degrees. The erosion wear rate was determined by measuring the weight loss. EDX analysis and SEM images were obtained to find the wear characteristics.FindingsThe build orientation affected the wear resistance of ABS slightly, whereas the orientation caused more significant differences in PLA and Nylon-CF. On the other hand, 90 degrees-oriented Nylon-CF composite gained mass, unlike other materials. From this point on, the incubation period specific to the composites was investigated by gradually increasing the amount of abrasive. The abrasive mass up to 5,000 g eventually finalized the incubation period and stabilized the weight loss of Nylon-CF. EDX results and SEM images were interpreted together, proving that the mass gain in Nylon-CF was due to the embedding of alumina particles in the matrix.Originality/valueThis study contributed to the literature to better understand the erosion wear behavior of the most used polymer-based materials produced with 3D printing. The incubation period detected in the Nylon-CF sample, which was found to be due to particle embedding, added another originality.

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