Results in Materials最新文献

{"title":"Corrosion characteristics of heat-treated biomedical grade 316L stainless steel in simulated body fluids","authors":"Ngeleshi Michel Kibambe ,&nbsp;Babatunde Abiodun Obadele ,&nbsp;Bukola Joseph Babalola ,&nbsp;Ufoma Silas Anamu ,&nbsp;Peter Apata Olubambi","doi":"10.1016/j.rinma.2025.100676","DOIUrl":"10.1016/j.rinma.2025.100676","url":null,"abstract":"<div><div>In this study, we investigated the corrosion behaviour of heat-treated biomedical grade 316L Stainless Steel (SS 316L) in simulated body fluids. SS 316L is widely used in biomedical applications due to its excellent mechanical properties and biocompatibility. Nonetheless, concerns about its susceptibility to corrosion in physiological environments persist. To mitigate these concerns, heat treatment was employed to enhance the material's corrosion resistance by modifying its microstructure. Specimens underwent heat treatment at varying temperatures (1050–1200 °C) for 1 h, followed by rapid water cooling. The corrosion behaviour of both untreated and heat-treated samples was assessed using electrochemical techniques, including potentiodynamic polarization and electrochemical impedance spectroscopy, in simulated body fluids with 0.9 % NaCl. The specimen exhibiting optimal corrosion resistance in this solution was further evaluated in Hanks Balanced Salt Solution enriched with Mg²⁺ and Ca²⁺ ions (HBSS⁺). The results highlighted that the specimen subjected to heat treatment at 1200 °C, followed by water quenching (HT1200 °C/1hr/WQ), experienced deterioration due to galvanic effects between the γ-austenite and δ-ferrite phases. Conversely, the specimen heat-treated at 1100 °C, followed by water quenching (HT1100 °C/1hr/WQ), demonstrated the highest corrosion resistance in 0.9 % NaCl, even surpassing the untreated sample. This improved corrosion resistance was attributed to the combination of moderate and uniform grain size and complete transformation to the austenitic phase during heat treatment. However, when the (HT1100 °C/1hr/WQ) specimen was immersed in a more aggressive HBSS⁺ solution, its corrosion resistance deteriorated, suggesting the influence of the medium despite microstructural improvement.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100676"},"PeriodicalIF":0.0,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystallinity integration of anatase (TiO2) nanocrystal by whole powder pattern fitting (WPPF) method: A Rietveld refinement study","authors":"Shanawaz Ahmed ,&nbsp;Md. Khalid Hossain Shishir ,&nbsp;Md. Tarikul Islam ,&nbsp;Md. Ashikur Rahaman ,&nbsp;Sahil Aman ,&nbsp;Allah Rakha Aidid ,&nbsp;Sumaiya Islam Sadia ,&nbsp;Md. Masud Rana ,&nbsp;Md. Ashraful Alam","doi":"10.1016/j.rinma.2025.100673","DOIUrl":"10.1016/j.rinma.2025.100673","url":null,"abstract":"<div><div>High crystalline anatase synthesized by a unique simple route using titanium isopropoxide (TTIP) as precursor and isopropyl alcohol (IP) as peptizing agent. The Rietveld refinement analysis showed that the synthesized material is composed of 99.0 % anatase and 1.0 % brookite phases of titanium dioxide (TiO₂). XRD characterized the prominent crystalline phase, providing insights into lattice parameters where a=b= 3.79068 Å, c= 9.50400 Å; α=β=γ= 90.0°; lattice strain 0.718, lattice volume 136.565 Å³, specific surface area 429.26 m²/g, dislocation density 0.0755 nm^{− 2}, preference growth 0.119 and packing efficiency 70.09 %. The most intense diffraction was attributed to the (101) plane at 2θ = 25.39°. The average crystallite size through six identical models those were 3.64 nm (Scherrer equation), 6.47 nm (Williamson-Hall plot) confirming the formation of nano-crystalline anatase. Furthermore, the synthesized anatase exhibited a higher degree of crystallinity at 67.21 % compared to the ICDD standard of 65.06 %. This enhanced crystallinity and other crystallographic data, confirm the successful synthesis of the highly crystalline anatase with improved properties compared to the standard material. The Z-average size of 342.05 nm indicates the hydrodynamic diameter and 63.05 mV zeta potential depicted excellent stability of synthesized anatase in colloidal. The TEM images revealed the uniform crystal growth and average crystallite size ranges in size 8.712 nm. The SAED pattern computed the high crystalline anatase diffracted in individual crystal planes as well as HR-TEM revealed d-spacing 0.3501 nm corresponding to the (101) planes and TEM couple EDS confirmed 100.0 % unified anatase crystal. This research advances the understanding of the controlled synthesis of anatase nanoparticles and demonstrates the effectiveness of characterizing their crystalline structure.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100673"},"PeriodicalIF":0.0,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of calcium and phosphorus base compounds on the characteristic and morphology of in situ synthesized hydroxyapatite-reduced graphene oxide nanocomposite","authors":"Erfan Mohammadipour,&nbsp;Mohammad Ghorbani","doi":"10.1016/j.rinma.2025.100674","DOIUrl":"10.1016/j.rinma.2025.100674","url":null,"abstract":"<div><div>In this investigation, hydroxyapatite/reduced Graphene Oxide (HA/rGO) nanocomposite was synthesized from different methods of calcium and phosphate ions, calcium acetate-calcium glycerophosphate, and calcium nitrate-diammonium hydrogen phosphate. Scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS), X-ray powder diffraction (XRD), and Fourier Transform Infrared Spectrometer (FTIR) were used to investigate surface morphology, chemical compositions, phase structures, and chemical structural composition of the powder, respectively. Raman spectroscopy was selected to analyze structural characteristics, which confirms the existence of reduced graphene oxide in the composite. The combination of calcium acetate and calcium glycerophosphate has been used to synthesize HA/rGO nanopowder, which has not been used in previous investigations. This work aims to evaluate the dissimilarities due to the use of diverse precursors of calcium and phosphate ions with the presence of various rGO concentrations, and the modifications in morphology and crystallinity of the HA/rGO composites. We found that, as the graphene concentration in HA/rGO nanocomposites increases, the Ca/P ratio increases due to increasing nucleation sites. Additionally, the interaction between HA and rGO was influenced by the calcium precursor, with calcium acetate-based powders showing stronger hydrogen bonding but increased defects and reduced crystallinity.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100674"},"PeriodicalIF":0.0,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and characterization of tetra-calcium phosphate from natural wastes of eggshell and cockle shell","authors":"Kaison Harisaeng ,&nbsp;Patamaporn Chaikool ,&nbsp;Yoshiharu Mutoh ,&nbsp;Prinya Chindaprasirt ,&nbsp;Teerawat Laonapakul","doi":"10.1016/j.rinma.2025.100670","DOIUrl":"10.1016/j.rinma.2025.100670","url":null,"abstract":"<div><div>This study focused on the utilization of natural waste materials, specifically eggshell and cockle shell, for extracting calcium carbonate (CaCO₃) as calcium-rich feedstocks for the synthesis of tetra-calcium phosphate (TTCP) via a solid-state reaction. The synthesized TTCP powders were compared with those produced using commercially available CaCO₃. The CaCO₃ powders derived from eggshells and cockle shells were found to exhibit characteristic calcite structures with a high calcium content of 95–96 % and a combination of irregularly shaped amorphous and crystalline morphologies. The TTCP powders synthesized from eggshell- and cockle shell-derived CaCO₃ demonstrated a characteristic high-intensity peak, along with minor phases of hydroxyapatite (HAp) and calcium oxide (CaO). These powders were fine and white with a light-blue tint. It is speculated that the fabricated TTCP powders hold potential for medical applications, such as bone cement.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100670"},"PeriodicalIF":0.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of process parameters and material composition of Al2O3-HAP composite using powder metallurgy","authors":"Muhammad Tayyab Bhutta ,&nbsp;Sadaqat Ali ,&nbsp;Malik Adeel Umer ,&nbsp;Aamir Mubashar ,&nbsp;Emad Ud Din ,&nbsp;Adnan Munir ,&nbsp;Abdul Basit","doi":"10.1016/j.rinma.2025.100669","DOIUrl":"10.1016/j.rinma.2025.100669","url":null,"abstract":"<div><div>This work used vacuum sintering and powder metallurgy (PM) to manufacture alumina (Al2O3) and hydroxyapatite (HAP) composite. Alumina's bio-inertness prevented bone ingrowth since it is not osteoinductive. Alumina (Al₂O₃) and hydroxyapatite (HAP) composites with bioinertness and biocompatibility have been created in order to provide a new material for load-bearing biomedical applications with comparatively low lower modulus, appropriate strength, and high biocompatibility. Four composite compositions with alumina concentrations of 60, 70, 80, and 90 % and hydroxyapatite concentrations of 40, 30, 20, and 10 % of the total volume were created for accurate characterization. A ball mill was used to mix the powders, and a hydraulic press was used for cold compaction. The green pellets were vacuum sintered for two, three, and 4 h at temperatures of 1300 °C and 1350 °C. The created composite compositions were examined utilizing elemental analysis to quantify the components and microstructure, as well as OM, FESEM, and XRD methods. The study's findings indicate that adding more HAP reduces the mechanical characteristics of the composites while adding more Al2O3 increases them. Furthermore, it was determined that the composition containing 70 % alumina and 30 % HAP, sintered for 4 h at 1350 °C, was optimal for use in biomedical applications.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100669"},"PeriodicalIF":0.0,"publicationDate":"2025-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143480370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of partial replacement of CaCO3 with palm kernel shell particles on the mechanical properties of PKS/CaCO3/HDPE hybrid composites","authors":"O. Issakah ,&nbsp;A.M. Kayaba ,&nbsp;Y. Fiagbe ,&nbsp;S. Akromah ,&nbsp;J.Y. Kpare ,&nbsp;E.K.A. Asare","doi":"10.1016/j.rinma.2025.100668","DOIUrl":"10.1016/j.rinma.2025.100668","url":null,"abstract":"<div><div>The use of biofillers as reinforcement in polymer matrix composite material has increased due to numerous advantages such as high strength, eco-friendly, and high strength-to-weight ratio. In this work, the effect of different sized palm kernel shells (PKS) and calcium carbonate (CaCO3) as filler materials on the mechanical, physical, and thermal properties in High density polyethylene (HDPE) was studied. The fillers were melt-blended with HDPE using Noztek single-screw extruder, and the sample was prepared using hot pressing and injection molding. The effects of PKS on the microstructure, tensile strength, impact strength, hardness, and thermal properties were analyzed. Significant improvements were observed in the ternary composites. The results showed that Young's modulus was decreased by 9.5 % and 4.9 % for the 125 μm and 500 μm hybrid, respectively. The addition of PKS showed significant improvement in tensile and hardness properties. An increase of approximately 0.9 % and a decrease of 7.7 % were observed in the tensile strength for the 125 μm and 500 μm hybrid, respectively. A decrease of 82.23 % and 83.37 % were observed for the impact strength of the 125 μm and 500 μm hybrid, respectively. The hybrid composite showed a more promising result regarding the hardness, with a 44.5 % and 44.7 % increase for the 125 μm and 500 μm hybrid, respectively.</div><div>SEM analysis of the composite surfaces revealed relatively good interfacial interactions between the palm kernel shell particles and the HDPE/CaCO₃ matrix.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100668"},"PeriodicalIF":0.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure simulation of maraging steel 1.2709 processed by powder bed fusion of metals using a laser beam: A cellular automata approach with varying process parameters","authors":"Kai-Uwe Beuerlein ,&nbsp;Mohammad Shojaati ,&nbsp;Mazyar Ansari ,&nbsp;Hannes Panzer ,&nbsp;Shahriar Imani Shahabad ,&nbsp;Mohsen K. Keshavarz ,&nbsp;Michael F. Zaeh ,&nbsp;Saeed Maleksaeedi","doi":"10.1016/j.rinma.2025.100667","DOIUrl":"10.1016/j.rinma.2025.100667","url":null,"abstract":"<div><div>Additive manufacturing via powder bed fusion of metals using a laser beam (PBF-LB/M) enables the fabrication of parts from metal powder with mechanical properties surpassing those of conventional processes. In this manufacturing process, a grain structure that is very sensitive to process parameter modifications and the resulting change in the temperature field is formed. Simulating the solidification microstructure is crucial for understanding process-microstructure relationships and creating digital twins for microstructure engineering and tailoring. This work introduces a cellular automata (CA) methodology for the microstructure simulation of maraging steel 1.2709 processed by PBF-LB/M. A high-resolution moving heat source model, based on the finite element method, was set up to capture the temperature field. The solidification microstructure was simulated by a two-dimensional CA model. Ten sets of process parameters have been used to produce single tracks experimentally to validate the CA model. The microstructure of these sets has been characterized by optical and scanning electron microscopy. The CA model successfully captures the essential solidification characteristics. The grain sizes have demonstrated a significant sensitivity to initial conditions. In-depth analysis has revealed that process parameters and thermal conditions, rather than the energy density, critically influence the grain size and the aspect ratio. Meanwhile, the grain alignment angle has shown no explicit dependency on process parameters, underscoring the complex dynamics governing microstructural evolution. This methodology paves the way for advancing material design in various industries by enabling a precise control over mechanical properties through microstructure tailoring.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100667"},"PeriodicalIF":0.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterization of nano dicalcium phosphate dihydrate from biogenic sources","authors":"Md. Kawcher Alam ,&nbsp;Md. Sahadat Hossain ,&nbsp;Mofassel Hossen Akash ,&nbsp;Muhammad Shahriar Bashar ,&nbsp;Newaz Mohammed Bahadur ,&nbsp;Samina Ahmed","doi":"10.1016/j.rinma.2025.100666","DOIUrl":"10.1016/j.rinma.2025.100666","url":null,"abstract":"<div><div>In the present study, calcium-enriched marine sources (Turritella, Cardium, and Conch shells) were used to prepare dicalcium phosphate dihydrate (DCPD) in an easy, affordable, and sustainable manner. To produce DCPD, orthophosphoric acid was subjected to a reaction with each type of shell powdered substance, resulting in DCPD in a sheet-like or irregular-type shape. The powdered materials were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and Fourier-transform infrared spectroscopy (FT-IR). FT-IR spectroscopy was employed to determine the presence of functional groups in the prepared DCPD. SEM image confirms plate-like structure, indicating homogeneity in both size and shape. EDX spectrum confirms the presence of Ca, P, and O and the degree of purity of all produced materials. The crystallite size of nano DCPD is determined by a variety of XRD models using the XRD pattern. An acceptable measurement for crystallite size was also obtained using the Size-Strain Plot (17.55, 27.18, 35.55 nm) and Halder-Wagner Model (11.23, 13.15, 28.57 nm). Many crystallographic properties of the synthesized substances were examined, including dislocation density, crystallinity index, relative intensity, preference growth, and microstrain. The DCPD percentage obtained by Rietveld refinement analysis is close to 90 %. Therefore, Turritella, Cardium, and Conch shells will provide an alternate source to fulfil the need for raw materials to manufacture DCPD.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100666"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The feasibility of constructing rubber concrete pavement reinforced with recycled and industrial steel fibers","authors":"Arash Shadfar ,&nbsp;Mehdi Nani ,&nbsp;Reza Shirinabadi ,&nbsp;Seyed Azim Hosseini","doi":"10.1016/j.rinma.2025.100657","DOIUrl":"10.1016/j.rinma.2025.100657","url":null,"abstract":"<div><div>The utilization of waste tires in the construction sector offers a sustainable and durable alternative to traditional materials. This study investigates the performance of the rubberized concrete pavement reinforced with steel fibers, incorporating recycled tire particles to replace a portion of the coarse and fine aggregates. The objective is to determine the optimal combination of rubber content, steel fiber type, and fiber amount for constructing flexible and durable rubberized concrete pavements. Various rubber particle sizes were incorporated into the concrete mix, and the performance was compared with traditional concrete. Two types of steel fibers were considered: manufacturer-produced steel fibers (MSF) and recycled steel fibers from used car tires (RTSF). Mechanical properties, including compressive strength, bending strength, and modulus of elasticity, were evaluated. Results indicated that the addition of rubber particles reduced the density and efficiency of the concrete while increasing air content. While compressive strength increased with the addition of steel fibers in traditional concrete, it decreased in the rubberized concrete. However, the modulus of elasticity and bending strength improved with the inclusion of steel fibers in the rubberized concrete. The study concluded that an optimal combination for constructing flexible rubberized concrete pavement reinforced with steel fibers involved replacing 60 % of the rubber particles with regular concrete particles and adding 20 kg/m³ of both industrial and recycled steel fibers. This configuration provided a balance between mechanical properties and sustainability benefits.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100657"},"PeriodicalIF":0.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the influence of the heterogeneous structure of concrete on its strength","authors":"V.M. Volchuk,&nbsp;M.A. Kotov,&nbsp;Ye G. Plakhtii,&nbsp;O.A. Tymoshenko,&nbsp;O.H. Zinkevych","doi":"10.1016/j.rinma.2025.100659","DOIUrl":"10.1016/j.rinma.2025.100659","url":null,"abstract":"<div><div>The structure heterogeneity and the strength of concrete was evaluated using multifractal analysis. The macrostructure of concrete with a predominance of crushed stone, sand and pores was studied. The relevance of the work lies in the possibility to carry out express-assessment of the quality of concrete products and structures using the developed algorithm with the use of portable equipment: photographing the structure of concrete; estimation of the range of colour range of the structure elements; calculation of the fractal dimensionality of the structure elements using the developed program; automatic strength prediction. Analysis results of the canonical spectrum <em>f(α)</em>, statistical characteristics of structural components: uniformity, orderliness <em>Δ=f(α)</em>_{<em>q = 1</em>}<em>−f(α)</em>_{<em>q = 100</em>}, and regularity <em>K=f(α)</em>_{<em>q = -100</em>}<em>−f(α)</em>_{<em>q = 100</em>} were calculated. The sensitivity between the indicators of breaking load during compression tests and statistical characteristics was recorded. This approach allowed screening out low-sensitivity structure features from the multifractal spectrum. Results of the analysis of complex and separate influence of statistical characteristics on the indicators of the breaking load of concrete are shown with regression linear models. Indicators of paired correlation <em>R</em>^<em>2</em> were determined. A relation has been found between breaking load and repetitive structural elements of one phase. This method of investigating the strength properties of concrete can be considered as an express method with limited accuracy of the results, about 80 %. To simplify and facilitate the use of the method, the software can be placed in the form of a smartphone application, which will allow to take photos and process the data immediately. The proposed approach can be interpreted as an express method of predicting the strength of concrete mixture, which is implemented without the use of special equipment. It can be used to assess the residual life of concrete structures where full-scale testing is impossible due to damage to the integrity of the structure.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100659"},"PeriodicalIF":0.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143273765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}