{"title":"Investigation of Screw Pile Behavior in Cohesive Soil Under Uplift and Compressive Forces by Experimental Studies and Numerical Analyses","authors":"Talha Sarici, Mustafa Ozcan","doi":"10.1007/s13369-024-09553-x","DOIUrl":"https://doi.org/10.1007/s13369-024-09553-x","url":null,"abstract":"<p>Within the scope of this study, experimental studies and numerical analyses were carried out to investigate the effect of the use of screw piles and traditional piles without screws on the bearing capacity of cohesive soils under the effect of uplift and compressive forces. In the experimental studies, the effect of changing the number of helixes and the effect of different overburden loads caused by this change were investigated. In numerical analyses, the finite element method was used via Plaxis 3D and a new design different from the commonly used modeling was created using the segmented helix model. After validating the results of numerical analysis and experimental study, the effect of different embedment depths and helix diameters on the behavior of cohesive soil reinforced with screw piles under loads was investigated. According to the results obtained from the study, the bearing capacity of cohesive soil increased as the screw pile helix number increased. Increase in bearing capacity was also observed with increasing embedment depth and helix diameter. In addition, the segmented helix model used in the numerical analyses represented the screw pile behavior more realistically.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"34 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mehmet Oruc, Muhammed Salih, Sedat Yayla, Seyfettin Bayraktar
{"title":"Numerical Studies on the Oil–Water Mixture Separation by Corrugated Plates with Hooks and Holes in Various Shapes and Configurations","authors":"Mehmet Oruc, Muhammed Salih, Sedat Yayla, Seyfettin Bayraktar","doi":"10.1007/s13369-024-09560-y","DOIUrl":"https://doi.org/10.1007/s13369-024-09560-y","url":null,"abstract":"<p>The present paper reports the studies on the separation efficiency of a water–oil mixture in the second process in which the water consists of 5–10% crude oil in general. The mixture in this stage was exposed to an additional separation. For this purpose, corrugated plates with L-shaped hooks and holes on the top intersection of the plates were used. Before handling some design factors such as the hole pattern at the intersection of the inclined plates, the inclination angle of the corrugated plates, and the hooks attached to the plates, an experimental rig was designed to validate the computational fluid dynamics (CFD) results. Upon achieving a successful comparison, the numerical studies were extended to reveal the effects of hole shapes and arrangement pattern and the angle of the plates. It was found that attaching L-shaped hooks to the plates improves separation effectiveness by 2% as compared to hookless plates. The parametric CFD studies reveal that the hole shapes do not affect considerably the separation efficiency while raising the plates increases the efficiency slightly and pressure drop dramatically.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"8 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Structured Defense Model Against DNP3-Based Critical Infrastructure Attacks","authors":"Erdal Ozdogan","doi":"10.1007/s13369-024-09577-3","DOIUrl":"https://doi.org/10.1007/s13369-024-09577-3","url":null,"abstract":"<p>Critical infrastructures encompass the essential systems required to operate various sectors, including energy, water, communication, finance, health, and transportation. The sophistication and organization of attacks on these infrastructures are escalating. A frequently targeted protocol within these critical infrastructures is the Distributed Network Protocol 3 (DNP3). This study developed a Machine Learning-supported Intrusion Detection System to identify attacks on DNP3 networks. The research utilized a current and balanced dataset containing DNP3 traffic from critical infrastructures. A model incorporating two defense lines, reflecting the structure of the attacks, was proposed. The initial detection of reconnaissance attacks is designed to prevent subsequent attacks. Reconnaissance attacks are identified in the first defense line using Extreme Gradient Boosting. In contrast, attacks on critical infrastructures are classified as the second defense line, with the support of artificial neural networks. In the study’s first phase, the model achieved high accuracy in detecting reconnaissance attacks. In the second phase, the model achieved approximately 99% accuracy in detecting attacks and around 98% average success in classification. The model achieved 96% accuracy in evaluating unknown attack detection capability.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"100 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tribological Investigation and Statistical Optimization by Response Surface Methodology of Vegetable Oil-Based Ionanolubricants","authors":"Gitesh Kumar, H. C. Garg","doi":"10.1007/s13369-024-09538-w","DOIUrl":"https://doi.org/10.1007/s13369-024-09538-w","url":null,"abstract":"<p>The demand for environmentally acceptable lubricants has surged due to awareness of the detrimental effects of petroleum-based lubricants. Vegetable oil-based nanolubricants have garnered significant attention over the past two decades. The present research work focuses on detailed experimental investigation of tribological and rheological characteristics of rice bran oil and sesame oil with trihexyltetradecylphosphonium bis(2,4,4-trimethylpentyl) phosphinate ([P<sub>66614</sub>][BTMPP]) ionic liquid and titanium oxide (TiO<sub>2</sub>) nanoparticles as additives. Experiments were conducted using ball on disc tribotester based on central composite design generated by response surface methodology. The study evaluated under three input parameters are load, speed, ionic liquid concentration and two output responses are average coefficient of friction and specific wear rate. Optimal tribological performance has been observed in rice bran oil and sesame oil formulations containing 0.608 vol% and 0.99 vol% of ionic liquid, respectively. Rheological analysis indicated Newtonian behavior across all lubricant samples.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"28 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Conversion of Used Cooking Oil into Biodiesel by Utilizing Zirconia Catalyst as Acid Catalyst (SO4/ZrO2) and Base Catalyst (ZrO2/CaO)","authors":"Remi Ayu Pratika, Zahrotun Nafisah, Yuliana Yuliana, Syarpin Syarpin, Rendy Muhamad Iqbal, Ysrafil Ysrafil, Karna Wijaya","doi":"10.1007/s13369-024-09520-6","DOIUrl":"https://doi.org/10.1007/s13369-024-09520-6","url":null,"abstract":"<p>Zirconium (ZrO<sub>2</sub>) was synthesized from Zirconium Oxychloride (ZrOCl<sub>2</sub>.8H<sub>2</sub>O) using hydrothermal method. Modification of ZrO<sub>2</sub> as an acid catalyst (SO<sub>4</sub>/ZrO<sub>2</sub>) was made by adding 0.5; 1; and 1.5 M sulfuric acid solutions to ZrO<sub>2</sub>. The sulfation process was confirmed by formation of SO<sub>4</sub><sup>2−</sup> ion spectrum in 1238–1001 cm<sup>−1</sup> region and resulted presence of elemental sulfur with mass percentage of 1.36%. The catalyst acidity test showed 1.5 M SO<sub>4</sub>/ZrO<sub>2</sub> catalyst as catalyst with the highest acidity value. The application of 1.5 M SO<sub>4</sub>/ZrO<sub>2</sub> catalyst in the esterification reaction of used cooking oil resulted decreasing of free fatty acid content up to 55.33%. In the another, preparation of basic catalyst, ZrO<sub>2</sub>/CaO was carried out by the addition of Calcium oxide (CaO) to ZrO<sub>2</sub> in three concentrations group of 25, 30, and 35%. The results, we found the catalyst with optimal basicity value in group 30% ZrO<sub>2</sub>/CaO. In addition, the 30% ZrO<sub>2</sub>/CaO catalyst has CaZrO<sub>3</sub> and lime-CaO crystal phases; exfoliated surface morphology and result Zirconium and Calcium of 7.41 and 42.83%, respectively. Furthermore, biodiesel production from used cooking oil using 30% ZrO<sub>2</sub>/CaO catalyst produces biodiesel with good conversion percentage of 94.00%.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"22 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Özge Erdoğan Yamaç, Mehmet Yilmaz, Erkut Yalçin, Ahmet Münir Özdemir, Alvaro Garcia-Hernandez, Baha Vural Kök
{"title":"Self-Healing and Mechanical Properties of Aged Hot Mix Asphalt Containing Waste Oil Capsules","authors":"Özge Erdoğan Yamaç, Mehmet Yilmaz, Erkut Yalçin, Ahmet Münir Özdemir, Alvaro Garcia-Hernandez, Baha Vural Kök","doi":"10.1007/s13369-024-09574-6","DOIUrl":"https://doi.org/10.1007/s13369-024-09574-6","url":null,"abstract":"<p>Hot mix asphalts are known to have a self-healing property and microcracks in the pavement can close to some extent after they occur if they are not subjected to load and if sufficient time is allowed. However, this healing period is prolonged, and the healing rate is not very high. In this study, calcium alginate capsules containing waste vegetable oil and waste mineral oil as rejuvenating agents were produced, and used in asphalt mixtures at four different rates (0.25%, 0.50%, 0.75%, and 1.0%) by weight. The study aims to develop an environmentally friendly and economically viable repair method by using waste oils. Marshall stability and flow and tensile strength ratio tests were conducted on cylindrical specimens. Additionally, three-point bending test was performed on aged asphalt mixtures to determine the self-healing rates of cracks formed in the specimens. Fourier transform infrared spectroscopy was conducted on bitumen specimens taken before crack formation and after the healing period to determine the percentage of ruptured capsules in the mixture. The results showed that the addition of capsules containing waste mineral oil and vegetable oil reduced stability values and increased flow values. However, according to the results of the retained Marshall stability test, it was determined that the addition of capsules, especially at a 0.5% ratio, increased resistance to moisture damage. Regarding crack-healing results, it was found that temperature and curing time increased healing rates, and capsules containing waste mineral oil provided higher healing rates compared to those containing waste vegetable oil.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"1 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluation of the Geometric Configuration of Horizontal Axis Wind Turbines Applied to a Packing House","authors":"Willian M. Okita, Dian Lourençoni","doi":"10.1007/s13369-024-09571-9","DOIUrl":"https://doi.org/10.1007/s13369-024-09571-9","url":null,"abstract":"<p>Wind turbines are considered a great option for power generation in rural areas and isolated regions that have an abundance of wind. However, such generation can be increased by optimizing the blades. Through this resource, commercial farms and small communities can acquire more comfort and economy. Based on this situation, a study was conducted in which a numerical code based on the lifting line theory was used to investigate different airfoils and analyze the linearization of chord and twist angle distributions in a small horizontal axis wind turbine to determine the most suitable configuration for obtaining an annual energy production of 32.2 MWh/year in a packing house located in the rural area of Petrolina-PE (Brazil). From the results, the geometric configuration that presents the adequate energy demand with lower local efforts was obtained by using the Joukowsky 6.3% airfoil and linearizing the chord and twist angle with maximum values of 0.4 m and 7°, respectively.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"19 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. Sorociak, B. Grzesik, J. Szołtysik, J. Bzówka, P. Mieczkowski, M. Klemens
{"title":"Analysis of Reclaimed Asphalt Pavement Heating with Microwave Radiation","authors":"W. Sorociak, B. Grzesik, J. Szołtysik, J. Bzówka, P. Mieczkowski, M. Klemens","doi":"10.1007/s13369-024-09552-y","DOIUrl":"https://doi.org/10.1007/s13369-024-09552-y","url":null,"abstract":"<p>The research focuses on the assessment of the potential use of microwave radiation as alternative heating method for reclaimed asphalt pavement (RAP) in hot mix asphalt (HMA) production. Recent studies on the use of microwave radiation in road engineering mostly focused on the cracked asphalt pavement. In the study, microwave heating performance was assessed based on the physical and mechanical characteristics of HMA with different RAP contents containing various amount of moisture. Results were compared to the HMA consisting of high amount of RAP containing Styrene–Butadiene–Styrene (SBS) polymer modified binder. The test results confirmed the possibility of microwaves utilization in order to heat the HMA without adversely affecting its basic properties. The research also shows the possibility of heating RAP in the process of HMA production, especially if the RAP moisture level is above 3%. In addition, the tests on HMA did not reveal any negative impact of microwave heating in the case of using wet RAP for the production of HMA. The susceptibility of the SBS polymer to microwave radiation was indicated by comparing the behavior of the two HMA types under its influence. HMA containing modified bitumen appears to achieve higher temperatures than HMA with unmodified bitumen after the same time of microwave heating.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"21 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hesam Ghanbari, Seyed Mohammad Fattahi, Abbas Soroush, Alireza Komaei
{"title":"Alkali-Activated Slag for Enhancing Mechanical Properties in Loose Sandy Soils: Experimental Investigation and Predictive Modeling","authors":"Hesam Ghanbari, Seyed Mohammad Fattahi, Abbas Soroush, Alireza Komaei","doi":"10.1007/s13369-024-09569-3","DOIUrl":"https://doi.org/10.1007/s13369-024-09569-3","url":null,"abstract":"<p>The present investigation explores the potential of alkali-activated slag as a novel method for stabilizing and enhancing the mechanical properties of loose sandy soils. To achieve this, unconfined compression tests were performed on samples with varying slag content, activator solution parameters, and curing conditions. A predictive model was developed to estimate UCS based on these factors. The microstructural analyses using field emission scanning electron microscopy and energy-dispersive X-ray spectroscopy elucidated the development of gels contributing to improved mechanical properties of the treated samples. Additionally, UCS tests demonstrated that increased slag content, activator concentration, and curing time significantly increase strength, stiffness, and brittleness. Notably, the findings show that samples treated with alkali-activated slag achieved substantially higher strength than those treated with ordinary Portland cement. These findings highlight the superior efficiency of this method in soil stabilization.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"62 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of Image Processing for Tool Flank Wear Measurement and Optimization Using the Taguchi Method","authors":"Ch. Divya, L. Suvarna Raju, B. Singaravel","doi":"10.1007/s13369-024-09543-z","DOIUrl":"https://doi.org/10.1007/s13369-024-09543-z","url":null,"abstract":"<p>In any machining, process parameters are optimized to obtain a better output with optimum input. Tool flank wear is one of the machinability parameters that significantly affect the cost of production and surface quality. In this study, turning procedure is carried out on Inconel 718, utilizing a micro-hole pattern on the rake face of the insert coupled with tungsten disulfide (WS<sub>2</sub>) solid lubricant as coolant. Process parameters are optimized using the Taguchi method to minimize flank wear. The result of optimization revealed that a cutting speed of 140 m/min, feed rate of 0.1 mm/rev, and depth of cut of 1.5 mm were ideal. Tool flank wear is often obtained using microscopic and SEM analysis methods. For this study, image processing steps are used to evaluate flank wear. The image of the patterned insert is the input, and a sequence of operations is carried out with MAT lab to obtain the flank wear. To validate the result, the optimized flank wear value obtained from Image processing is compared through optical microscope and noticed that the error is minimum. The result revealed that image processing is a reliable method to measure tool flank wear accurately and the optimized value using Taguchi leads to effective machining performance.</p>","PeriodicalId":8109,"journal":{"name":"Arabian Journal for Science and Engineering","volume":"81 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}