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European Journal of Materials Science and Engineering
ISSN 2537-4338 · Politehnium Publishing House · 188 artikel di indeks
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FIELD VALIDATION OF ACOUSTIC LEAK DETECTION IN AN AGING URBAN WATER DISTRIBUTION SYSTEM: INFLUENCE OF AGING INFRASTRUCTURE ON ACOUSTIC LEAK DETECTION
Water losses in distribution networks pose a major challenge for regional water utilities, exacerbated by aging infrastructure and the increasing frequency of failures in pipeline sections beyond their service life. This paper presents two case studies on field validation of acoustic leak detection…
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DEVELOPMENT OF THE Fe–Al ALLOY PHASE EQUILIBRIUM SYSTEM AND THE Fe–Al–C TRIPLE SYSTEM IN THE THERMO-CALC PROGRAM
In this study, the phase diagrams of the Fe–Al binary and Fe–Al–C ternary systems were analyzed using the Thermo-Calc program. Based on Gibbs free energy, enthalpy, and other thermodynamic parameters, the stability of intermetallic phases under various temperature and compositional conditions was…
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STRUCTURAL OPTICAL AND PHOTODEGRADATION PROPERTIES OF NANOSTRUCTURED BiFeO3 COMPOUND
This study presents a novel exploration into the photocatalytic properties of nanostructured BiFeO3, synthesized using the ultrasonication-assisted sol-gel technique. Rietveld-fittedX-ray diffraction studies reveal that the synthesized compoundexhibits rhombohedralsymmetry (R3c space group).The…
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DEVELOPMENT OF POUR POINT DEPRESSANT USING AFRICAN PEAR SEED OIL (DACRYODES EDULIS) AND DESERT DATE SEED OIL (BALANITES AEGYPTIACA) AS GREEN ALTERNATIVES
This study investigates the potential development of biodegradable pour point depressants (PPDs) using natural oils from African pear seeds (Dacryodes edulis) and desert date seeds (Balanites aegyptiaca) as eco-friendly options to improve the flow properties of waxy crude oils. Nigerian crude oil…
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EFFECT OF AGGREGATE SIZE ON BOND STRENGTH OF CAST-IN-PLACE AND POST-INSTALLED REINFORCEMENT BAR
This research investigated the effect of aggregate size on the bond strength of cast-in-place (CI) and post-installed (PI) reinforcement bars on 112 specimens (60 CI and 52 PI) under a pull-out test. The PI reinforcements were inserted to center of the concrete specimen using FIS EM plus 390 S…
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AUTONOMOUS POLYMER MATERIALS DISCOVERY: ARTIFICIAL INTELLIGENCE ARCHITECTURES FOR GENERATIVE DESIGN AND CLOSED-LOOP ENGINEERING
Artificial intelligence (AI) is revolutionizing polymer engineering by shifting materials development from traditional trial-and-error to integrated, data-driven, and autonomous workflows. This review summarizes recent progress in AI-driven polymer science, including structural representation…
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EXTRACTION OF ALUMINA FROM SELECTED NIGERIAN KAOLIN FOR INDUSTRIAL APPLICATIONS
The extraction of alumina from selected Nigerian kaolin was investigated to assess its viability as a raw material for industrial applications. Kaolin samples from four locations Okpella, Afowa (white and black), and Ado Ekiti, were analyzed for their chemical composition and subjected to…
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IMPACT OF TWIST FACTOR ON THE PHYSICAL AND STRUCTURAL PROPERTIES OF JUTE YARN LINEAR DENSITY
This study investigates the effect of twist factors on the tensile properties of jute yarns with linear densities of 193, 213, and 251 tex. The yarns were twisted to four levels: 1460, 2420, 2820, and 3056 turns per metre x √Tex. Tensile testing was conducted according to ASTM D2256 standards to…
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EFFECTS OF ALUMINIUM REINFORCEMENT ON THE MECHANICAL AND MORPHOLOGICAL CHARACTERISTICS OF HIGH-DENSITY POLYETHYLENE COMPOSITES
Polymer matrix composites (PMC) are prominent structural materials that offer a combination of some extra-ordinary properties, including light weight, high strength, high resistance to chemicals, etc. In this research, the influence of aluminium reinforcement content (5–40 wt%) on the…
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CREEP BEHAVIOR OF AN EQUIMOLAR CONIFEMNCR HIGH ENTROPY ALLOY AT 1000°C AND BEYOND
The Cantor alloy is one of the earliest high entropy alloys to appear. In contrast with its properties at low and cryogenic temperatures, its creep behavior at close to 1000°C is not yet very known. This work aims to explore the behavior of a cast equimolar CoNiFeMnCr alloy in three points bending…
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PREDICTION OF HARDNESS CHARACTERISTICIS OF TIG WELDED Co-Mo STEEL FLAT BARS USING NEUTRAL NETWORKS
This study investigates the development and application of a neural network (NN) model to predict hardness characteristics in Cr-Mo steel welded joints, utilizing the SPSS software suite. The model incorporates four key welding parameters; material thickness, welding current, the number of weld…
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STUDY ON THE BATTERY CHEMICAL ELEMENTS RECYCLING POSSIBILITIES
The recycling of car batteries has become a crucial issue in the current context of the transition to electric vehicles. The authors summarise the most critical chemical elements mining and use trends in battery production. Additionally, the issue of the distribution of cobalt, a key material in…
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INVESTIGATION OF MICROSTRUCTURE, CORROSION PERFORMANCE AND MECHANICAL PROPERTIES OF Mg- 5.45Zn- 6.63Sn- 0.51Ca ALLOY
In this paper, the study of research on the microstructure and corrosion behavior and mechanical properties of a Mg-5.45Zn-6.63Sn-0.51Ca alloy under different thermal and mechanical states is reported. The cast of the alloy in a mild steel mould took place at 700°C; then, it was homogenized at…
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FLAME RETARDANT MULTILAYER MICROWAVE ABSORBERS BASED ON POWDERED ACTIVATED CHARCOAL
The article presents the technology for obtaining flame retardant microwave absorbers based on powdered charcoal. These absorbers include three layers. The outer layer of these absorbers is formed based on a mixture of powdered aluminum oxide or titanium dioxide and a flame retardant paint, the…
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PLASTIC PIPES FOR HYDROCARBON TRANSPORT AND GENERAL USE
Traditionally, steel pipelines have been used for the construction of hydrocarbon pipelines, with the use of plastic pipes being restricted to water and sewage applications. There has been a trend to substitute traditional steel pipes with plastic pipes for constructing pipelines used in the…
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INNOVATIONS IN ONE-DIMENSIONAL CONSOLIDATION TESTING: A REVIEW OF THE DOUBLE-ACTION OEDOMETER
This study presents an in-depth evaluation of the double-action oedometer (DAO) as an advanced testing apparatus for simulating soil compressibility under near-field conditions. Unlike the classic oedometer, which enforces full lateral confinement and single-direction loading, the DAO introduces a…
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ADVANCED JOINING TECHNIQUES FOR MULTI-MATERIAL STRUCTURES: A REVIEW ON ULTRASONIC CONSOLIDATION, COLD SPRAY, AND ELECTRON BEAM MELTING
The demand for lightweight, high-performance, and multifunctional structures has driven rapid advances in multi-material joining technologies across aerospace, automotive, and electronics industries. Traditional joining methods often struggle with challenges such as thermal distortion, brittle…
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FABRICATION OF HYBRID COMPOSITE WITH ALUMINUM AND SUGARCANE BAGASSE REINFORCEMENT FOR INVESTIGATION OF ITS PROPERTIES
This research work was carried out to prepare hybrid-type polymer composites by introducing aluminum (Al) and sugarcane bagasse as reinforcements and polypropylene as the matrix phase. The hybrid composite was PP-Al-Bagasse. Here, the percentage of reinforcements varied (10-40 wt.% %), and the…
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TREATMENTS AND METHODS FOR IMPROVING BIOFUNCTIONAL PROPERTIES OF TITANIUM ALLOYS
Because of its exceptional combination of mechanical strength, corrosion resistance, and outstanding biocompatibility, titanium and its alloys continue to be essential in the development of cutting-edge biomedical implants. But choosing the right alloy system is not enough to provide maximum…
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IMPACT OF HEAT TREATMENTS ON THE CORROSION RESISTANCE OF A BIOCOMPATIBLE CO–CR–W ALLOY FABRICATED BY SLM
Selective laser melting is one of the most common additive manufacturing technologies, appreciated for its precision and accuracy in the fabrication of complex tridimensional parts from metallic powders, by tridimensional computer-assisted design (CAD-3D). The parts fabricated by this method have a…