International Journal of Mechanical and Materials Engineering最新文献

{"title":"Role of grain size on the corrosion resistance of pipeline steels in acidic environment","authors":"Meekness Nnoka,&nbsp;Tonye Alaso Jack,&nbsp;Sandeep Yadav,&nbsp;Jerzy Szpunar","doi":"10.1186/s40712-025-00240-9","DOIUrl":"10.1186/s40712-025-00240-9","url":null,"abstract":"<div><p>The microstructure of pipeline steels plays an important role in determining their resistance to corrosion. Among various microstructural features, grain size has been a topic of ongoing debate regarding its influence on the corrosion resistance of pipeline steels. While it is established that grain size inversely correlates with yield strength, its impact on corrosion resistance in acidic environments remains unclear. This study investigated the effects of grain size on the corrosion resistance of pipeline steels exposed to an acidic environment. Heat treatments were conducted to vary the grain size from 8 to 19 µm while minimizing contributions from other microstructural features. The findings revealed that reducing grain size significantly enhanced corrosion resistance by promoting passivation. Grain boundaries were identified as the preferred sites for forming protective oxide layers, compared to grain interiors. Consequently, samples with finer grains, which inherently possess a higher density of grain boundaries, exhibited enhanced passivation, resulting in greater surface coverage by protective oxide layers. In contrast, samples with larger grains primarily formed oxide layers along the grain boundaries, leaving the grain interiors more susceptible to attack by corrosive species. Additionally, a phenomenological model was developed based on the experimental results. This model was validated through independent measurements, confirming that passivation coverage increases with decreasing grain size in acidic environment.\u0000</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00240-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466034","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":"Carbon-based nanomaterials: interactions with cells, brain therapies, and neural sensing","authors":"Lorena Gárate-Vélez,&nbsp;Mildred Quintana","doi":"10.1186/s40712-025-00236-5","DOIUrl":"10.1186/s40712-025-00236-5","url":null,"abstract":"<div><p>Carbon nanomaterials (CNMs) are characterized by their extensive surface area and extraordinary electronic, thermal, and chemical properties, offering an innovative potential for biomedical applications. The physicochemical properties of CNMs can be fine-tuned through chemical functionalization to design the bio-nano interface, allowing for controlled biocompatibility or specific bioactivity. This versatility offers a transformative approach to addressing the inherent limitations of conventional brain therapies, which frequently demonstrate low efficacy and significant adverse effects. This review delves into recent advances in understanding the intricate interactions between carbon nanostructures and cellular systems, highlighting their activity in brain therapy and neuronal sensing. We provide a comprehensive analysis of key nanostructures, including few-layer graphene (FLG), graphene oxide (GO), graphene quantum dots (GQD), single- and multi-walled carbon nanotubes (SWCNT and MWCNT), carbon nanohorns (CNH), carbon nanodiamonds (CNDs), and fullerenes (C₆₀). Their unique atomic configurations and surface modifications are examined, revealing the underlying mechanisms that drive their biomedical applications. This review highlights how a deep understanding of the interactions between CNMs and cells can catalyze innovative neurotherapeutic solutions. By leveraging their unique properties, CNMs address critical challenges such as crossing the blood–brain barrier, improving therapeutic accuracy, and minimizing side effects. These advances have the potential to significantly improve the treatment outcomes of brain disorders, paving the way for a new era of targeted and effective neurological interventions.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00236-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455617","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":"Developing low-carbon sustainable building material by adding micro steel fiber with recycled aggregate concrete","authors":"J. Rajprasad,&nbsp;J. S. Sudarsan,&nbsp;M. Jeeva Prasanth,&nbsp;S. Nithiyanantham","doi":"10.1186/s40712-025-00224-9","DOIUrl":"10.1186/s40712-025-00224-9","url":null,"abstract":"<div><p>Concrete is the most tremendous and widespread building material in the world. Building materials have become expensive and scarce. There is a tremendous need for substitute materials made from industrial waste in this desolate area. In concrete, ensuring the most expedient utilization of recycled aggregate (RA) from demolished structures can aid in the preservation of the natural surroundings, environment, and dumping space. The natural aggregate is eliminated with RA by (25, 50, 75, and 100%) volumes were carried out in 7, 14, and 28 days. Due to drying shrinkage, fresh concrete develops structural fissures, resulting in structural failure. Adding micro steel fiber is one of the most efficient strategies for improving the concrete’s characteristics like tensile strength, compressive strength, and flexural strength. In addition to this, a comparison is made between conventional concrete and RA concrete furthermore contains micro steel fiber enhancing the enforcement that leads to unreeling concrete. The outcomes of micro steel fiber onto RA concrete are assessed, and the conflicts among natural and RA attributes are addressed and discussed in detail.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00224-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466033","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":"Synergistic antireflection and SERS enhancement in hybrid silicon nanowires by LIL and MACE","authors":"Sadaf Saeed,&nbsp;Ali Zia,&nbsp;Sana Tariq,&nbsp;Umema Shakoor,&nbsp;Dongdong Liu,&nbsp;Ri Liu,&nbsp;Liang Cao,&nbsp;Changrui Liao,&nbsp;Zuobin Wang","doi":"10.1186/s40712-024-00196-2","DOIUrl":"10.1186/s40712-024-00196-2","url":null,"abstract":"<div><p>This paper presents an innovative approach to fabricating dual-functional hybrid silicon nanowire (SiNW) arrays that demonstrate antireflection and Surface-Enhanced Raman Scattering (SERS) potentials. Three-beam laser interference lithography (TBLIL) is used to create interference fringe patterns on a Si substrate, which serves as a template for subsequent NWs creation. Subsequently, metal-assisted chemical etching (MACE) selectively etched the substrate and stimulated the formation of SiNWs with various aspect ratios. The morphological and optical features of the hybrid SiNWs were characterized by scanning electron microscopy (SEM), finite difference time domain (FDTD), and Raman spectroscopy. The resulting structured surface morphology effectively reduced the reflection losses at various wavelengths. The Raman spectra of rhodamine 6G (R6G) analytes at concentrations of 10^–4 to 10^–8 are examined, indicating that the Raman signals were significantly enhanced and had long-term stability and reliability. The Raman characteristic peaks of R6G were observed at 620, 1361, and 1660 cm⁻¹, which are potentially useful in sensitive chemical sensors.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-024-00196-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465972","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":"A machine learning-based recommendation framework for material extrusion fabricated triply periodic minimal surface lattice structures","authors":"Sajjad Hussain,&nbsp;Carman Ka Man Lee,&nbsp;Yung Po Tsang,&nbsp;Saad Waqar","doi":"10.1186/s40712-025-00229-4","DOIUrl":"10.1186/s40712-025-00229-4","url":null,"abstract":"<div><p>Lattice structures (LS) have been utilized in various fields, from engineering to biomedical sciences. In the lattice structures, the triply periodic minimal surface (TPMS) LS attains benefits in terms of higher productivity and less material usage, a step towards greener 3D printing. However, no automated system exists that can effectively recommend LS parameters to reduce material waste, which is often neglected in traditional methods. To overcome these challenges, this study presents a machine learning (ML) and Deep Learning (DL) based framework recommending TPMS LS according to specific requirements. Initially, a dataset of 144 samples was created using the Material Extrusion (ME) technique. The four TPMS LS were chosen (Split-P, Gyroid, Diamond, and Schwarz) and manufactured with Polylactic acid (PLA). This dataset was used to train both ML and DL algorithms. ML algorithms included Bayesian regression (BR), K-nearest neighbors (KNN), Random Forest (RF), Decision Tree (DT), and DL algorithm convolutional neural network (CNN). These models were used to predict the key parameters of TPMS LS, including wall thickness, unit cell type, loading direction, and unit cell size. Extensive testing was performed to evaluate the performance of the algorithms, employing <i>R</i>-squared values and root mean square error (RMSE). The results showed that the machine learning models, specifically the RF and DT algorithms, performed the best, achieving R-squared scores of 0.993 and 1.0 and RMSE scores of 0.1180 and 0.0795, respectively. The deep learning model, CNN, achieved an RMSE value of 0.46 and an <i>R</i>-squared score of 97%. This study not only contributes to a better understanding of automated TPMS lattice structures but also has significant implications for sustainable design and innovation, particularly in enhancing efficient and environmentally friendly 3D printing technologies.\u0000</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00229-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465994","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":"Tribological behavior of unfilled PTFE under static loading in dry sliding condition: a Taguchi-ANN perspective","authors":"Kiran Ashokrao Chaudhari,&nbsp;Jayant Hemchandra Bhangale","doi":"10.1186/s40712-025-00233-8","DOIUrl":"10.1186/s40712-025-00233-8","url":null,"abstract":"<div><p>This work explores the friction and wear characteristics of unfilled polytetrafluoroethylene (PTFE) operating in static unlubricated sliding conditions using Taguchi analysis. The research uses a design of experiment (DOE) technique, focused on sliding velocity, and applied pressure and sliding time as parameters. Systematic experimentation is facilitated with Taguchi’s L9 orthogonal array, and Minitab 17 software is used to evaluate the findings. Signal-to-noise ratios (SNR) are used in the evaluation of individual parameter effects, the creation of regression models, and the establishment of ideal operating conditions. The analysis focuses on predicting wear (W), specific wear rate (Ws), and friction coefficient (f) through regression and ANN (artificial neural network) models, with ANN demonstrating better performance. The results advocate for optimal operating condition for PTFE under static load. This study adds important information for sectors where PTFE is employed as a primary material, such as rolling and sliding contact bearings.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00233-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423057","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":"Analysis of microstructure and microhardness of aluminum alloy melt for grain refinement by twin-roll casting","authors":"Naveen Kumar,&nbsp;P. K. Mall,&nbsp;C. Durga Prasad,&nbsp;Amit Medhavi,&nbsp;Monica Mehrotra,&nbsp;Shailendra Kumar,&nbsp;Md Sarfaraz Alam,&nbsp;Gurbhej Singh,&nbsp;Suresh Singh,&nbsp;Ranjith Balu,&nbsp;Adem Abdirkadir Aden","doi":"10.1186/s40712-025-00211-0","DOIUrl":"10.1186/s40712-025-00211-0","url":null,"abstract":"<div><p>This study examines sheets produced using twin-roll casting (TRC) and melt conditioned twin-roll casting (MCTRC) to evaluate the effect of melt conditioning on segregation pattern and grain refinement. To produce sheets through the MTCRC technique, melt conditioning using high shear technology (high-speed rotor) was applied to Al-5 Mg alloys, before subjecting the melt to TRC. A low shear slope was used to prepare a commercially pure aluminum ingot. The mean grain size obtained for slope processed samples with vibration at a pouring temperature of 780°C is 69.4 µm, decreasing to 62.5 µm with a 20°C decrease in pouring temperature. Samples prepared without vibration at temperatures of 780°C and 760°C exhibit grain sizes of 85.172 and 77.8 µm, respectively. Additionally, the average grain size of Al-5 Mg alloy sheets produced using TRC is around 270 µm, which decreases to 230 µm for sheets produced using MCTRC. The grain size data comparison of the samples prepared using high shear technology and those with a low shear slope indicate successful results of grain refinement in both cases. However, it is advantageous to produce sheets using the low shear slope method as compared to the high shear technology, because of the low setup costs.\u0000</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00211-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404133","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":"Performance evaluation of geopolymer concrete with waste granite powder as a sustainable alternative to sand","authors":"Ahmed Minhajuddin,&nbsp;Arijit Saha","doi":"10.1186/s40712-025-00227-6","DOIUrl":"10.1186/s40712-025-00227-6","url":null,"abstract":"<div><p>The control and disposal of solid waste pose significant global challenges, particularly in the management of waste granite powder (WGP), a by-product of granite processing industries. Addressing this issue, the present study investigates the potential of WGP as a partial substitute for fine aggregate in concrete, with replacement levels up to 50%. The research emphasizes the need for sustainable construction materials and explores the viability of using industrial waste to reduce environmental impact and resource depletion. Novel aspects of this study include the comprehensive evaluation of the physical and chemical characteristics of fine aggregate and WGP through X-ray diffraction (XRD) and X-ray fluorescence (XRF) analyses. The study also examines the fresh and mechanical properties of concrete, such as workability, compressive strength, flexural strength, ultrasonic pulse velocity (UPV), and modulus of elasticity to determine the optimum WGP substitution level. The findings reveal that mechanical strength improves with WGP replacement levels of up to 40%, highlighting the potential of WGP in enhancing concrete performance. Furthermore, correlations between different mechanical properties are analyzed, providing a deeper understanding of the behavior of WGP-blended concrete. In addition to technical evaluations, a detailed cost analysis is conducted to assess the economic feasibility of using WGP in concrete production. The results indicate that incorporating WGP not only offers environmental benefits by reducing waste but also provides a cost-effective alternative to traditional fine aggregate. Thus, substituting sand with WGP in concrete emerges as a sustainable solution, delivering comparable or superior mechanical properties while contributing to environmental conservation and cost reduction.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00227-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396695","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":"Changes in wood-water relations in acetylated wood over the course of Rhodonia placenta brown rot decay","authors":"Tiina Belt,&nbsp;Michael Altgen","doi":"10.1186/s40712-025-00228-5","DOIUrl":"10.1186/s40712-025-00228-5","url":null,"abstract":"<div><p>Acetylation greatly increases the decay resistance of wood, but even highly acetylated wood can be degraded by fungi if given sufficient time. This study investigated the degradation of acetylated wood by the brown rot fungus <i>Rhodonia placenta</i>, aiming to understand the fungal-induced changes in wood-water relations that are associated with decay. Acetylated samples as well as unacetylated references were exposed to <i>R. placenta</i> in a stacked-sample decay test to generate samples in different stages of decay. The decayed samples were used to investigate changes in acetyl content, water vapour sorption, and maximum cell wall moisture content as measured by solute exclusion. <i>R. placenta</i> caused high mass losses in acetylated wood, but preferential deacetylation was seen only in highly acetylated samples in the early stages of decay. Acetylated samples showed increased hygroscopicity in sorption measurements as a result of <i>R. placenta</i> degradation, particularly at high relative humidity in desorption from the undried decaying state. The increase was very strong in the highly acetylated samples and took place at low mass losses, indicating that it may be at least partially related to the deacetylation of the wood material. Degradation also increased maximum cell wall moisture content, but the increase was stronger in the references than the acetylated samples, suggesting that the acetyl groups remaining in the samples continue to provide a cell wall bulking effect.</p></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00228-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143388856","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":"Influence of oxalic acid and CTAB on the structural and optical properties of nanocrystalline tungsten oxide synthesized via co-precipitation method","authors":"R. P. Neethu,&nbsp;G. Madhu","doi":"10.1186/s40712-025-00214-x","DOIUrl":"10.1186/s40712-025-00214-x","url":null,"abstract":"<div><p>Herein, we report the oxalic acid and cetyl trimethyl ammonium bromide (CTAB) assisted co-precipitation synthesis of nanocrystalline tungsten oxide (WO₃). Different annealing temperatures were selected systematically based on the thermo-gravimetric analysis (TGA) of the precursors. The high crystallinity of the samples was revealed from the intense and narrow X-ray diffraction (XRD) peaks. Oxalic acid-assisted WO₃ showed a considerable reduction in crystallite size. The increase in crystallite size with annealing temperature was also evident in both samples. The change of surfactant and annealing temperature resulted in a modification of surface morphology that was identified using high-resolution resolution-scanning electron microscopy (HR-SEM). The formation of WO₃ was further established by the Raman spectra of the samples. Size strain plot (SSP) analysis of the samples showed a decrease of microstrain with an increase in annealing temperature. The bandgap energy obtained from the diffused reflectance spectra of the samples showed a red shift with an increase in annealing temperature. The X-ray photoelectron spectroscopy (XPS) analysis confirmed the existence of a pure oxidation state of W⁶⁺ in oxalic acid-assisted WO₃ and mixed oxidation states of W⁶⁺ and W⁵⁺ in CTAB-assisted WO₃ samples. The mesoporous nature and specific surface area of the samples are inferred from Brunauer–Emmett–Teller (BET) analysis. The reduced crystallite size, stable oxidation state, and higher specific surface area of the oxalic acid-assisted WO₃ samples suggest its possible use as a supercapacitor and photocatalyst.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"20 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://jmsg.springeropen.com/counter/pdf/10.1186/s40712-025-00214-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379749","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}