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Indeterminate Continuously Inhomogeneous Beam under End Rotation: A Longitudinal Fracture Study 端面旋转下的不定型连续不均匀梁：纵向断裂研究
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1406766
V. Ri̇zov
{"title":"Indeterminate Continuously Inhomogeneous Beam under End Rotation: A Longitudinal Fracture Study","authors":"V. Ri̇zov","doi":"10.55549/epstem.1406766","DOIUrl":"https://doi.org/10.55549/epstem.1406766","url":null,"abstract":"The present paper describes a theoretical analysis of the effect of the end rotation of a statically indeterminate beam structure on the behaviour of a longitudinal crack. The beam is made of a material that is continuously inhomogeneous along the beam thickness. Besides, the material has non-linear elastic behaviour. The left end of the beam is supported with an axial double rod, while the right end is rigidly fixed. There is no external mechanical loading on the beam. Thus, the only influence on the beam is the rotation of the beam left end. Equations for determination the curvatures and the coordinates of the neutral axes are worked out and solved together with equations for resolving the static indeterminacy. The response of the longitudinal crack to the rotation of the beam left end is studied by deriving the strain energy release rate. For this purpose the balance of the energy in the beam is analyzed. The strain energy release rate is verified by applying the integral, J. A parametric analysis is performed to evaluate the influence of the beam end rotation and other factors on the longitudinal fracture.","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"21 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139158247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical Simulation on Microwave Melting of Hastelloy C-276 哈氏合金 C-276 微波熔化的数值模拟
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1408851
Kadapa Vijaya Bhaskar Reddy, K.v. Hari Shankar, Venkatesh Gudipadu
{"title":"Numerical Simulation on Microwave Melting of Hastelloy C-276","authors":"Kadapa Vijaya Bhaskar Reddy, K.v. Hari Shankar, Venkatesh Gudipadu","doi":"10.55549/epstem.1408851","DOIUrl":"https://doi.org/10.55549/epstem.1408851","url":null,"abstract":"Melting of metals is of utmost importance in the manufacturing industry as it is the primary manufacturing process to obtain the desired shape and size. microwave melting is a novel technique that uses electromagnetic wave radiation to heat materials. In the present work, the melting of Hastelloy C-276 inside a multimode microwave applicator operating at 2.45 GHz and 900 W input power, is explored in numerical and experimental. This results in a significant reduction in processing time and leads to lesser material wastage. The distribution of temperature, electric field, and resistive losses was analysed to understand the microwave melting of the Hastelloy C-276 sample. The study revealed that the melting time taken was ~440 seconds for microwave melting of Hastelloy C-276.","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"10 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139158409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bibliometric Analysis in Scientific Articles on Nitrogen Fixation of Legumes 豆科植物固氮科学文章的文献计量分析
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1403003
Aybegün Ton
{"title":"Bibliometric Analysis in Scientific Articles on Nitrogen Fixation of Legumes","authors":"Aybegün Ton","doi":"10.55549/epstem.1403003","DOIUrl":"https://doi.org/10.55549/epstem.1403003","url":null,"abstract":"<jats:p />","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"14 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139158520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
User-Defined Autogenerated Fuzzy Solvers for Embedded Applications 用于嵌入式应用的用户自定义自动生成模糊求解器
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1406249
A. Vassiliev, Ye Min Htet, Htut Shine, A. V. Vegner
{"title":"User-Defined Autogenerated Fuzzy Solvers for Embedded Applications","authors":"A. Vassiliev, Ye Min Htet, Htut Shine, A. V. Vegner","doi":"10.55549/epstem.1406249","DOIUrl":"https://doi.org/10.55549/epstem.1406249","url":null,"abstract":"<jats:p />","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"45 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139158680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Approximate Analytic Solution for Fractional Differential Equations with a Generalized Fractional Derivative of Caputo-Type 带卡普托型广义分式微分方程的近似解析解
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1403008
Abedel-karrem Alomari, Anwar" Alsleeby
{"title":"Approximate Analytic Solution for Fractional Differential Equations with a Generalized Fractional Derivative of Caputo-Type","authors":"Abedel-karrem Alomari, Anwar\" Alsleeby","doi":"10.55549/epstem.1403008","DOIUrl":"https://doi.org/10.55549/epstem.1403008","url":null,"abstract":"<jats:p />","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139159193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Torsional Fatigue and Static Torsion Strength and Test Validations of Composite Tube Hybrid Drive Shafts 复合管混合传动轴的扭转疲劳和静态扭转强度及测试验证
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1406747
Onur Ozbek, Serdar Kaan Hortooglu, Sedat Tarakçi, Efe Isik
{"title":"Torsional Fatigue and Static Torsion Strength and Test Validations of Composite Tube Hybrid Drive Shafts","authors":"Onur Ozbek, Serdar Kaan Hortooglu, Sedat Tarakçi, Efe Isik","doi":"10.55549/epstem.1406747","DOIUrl":"https://doi.org/10.55549/epstem.1406747","url":null,"abstract":"Drive shafts are the transmission components which transfer power from power source to required location. The connection may be between steering wheel and rack & pinion mechanism or gearbox to differential. As in gearbox to differential connection, operational conditions are harsh and high loads are generated, steel materials are mainly preferred to be used. Though steels have such advantages in cost, performance and durability, it is heavier compared to other engineering materials. Since international regulations dictate to decrease the carbon emissions rates due to global concerns, weight decrement of automobile components plays an important role in solving such problem. Considering the operational requirements and boundary conditions, weight reduction in steel parts might be tough. For this reason, alternative materials must be deeply investigated and implemented into the traditional technologies. In the scope of this study, fatigue and torsional strength of propeller shaft with composite tube and aluminum subcomponents were investigated.","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139159488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis and Some Electrochemical Properties of Carbazole Derivative Monomers for Optoelectronic Device Design 用于光电器件设计的咔唑衍生物单体的合成及其某些电化学特性
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1403010
Merve Yandimoglu, Kamuran Gorgun, Evrim Hur
{"title":"Synthesis and Some Electrochemical Properties of Carbazole Derivative Monomers for Optoelectronic Device Design","authors":"Merve Yandimoglu, Kamuran Gorgun, Evrim Hur","doi":"10.55549/epstem.1403010","DOIUrl":"https://doi.org/10.55549/epstem.1403010","url":null,"abstract":"Low-cost instruments are used to achieve high sensitivity, accuracy and precision with electrochemical techniques, making them the most suitable analytical methods used to investigate the electrochemical properties of a new molecule. Among these techniques, cyclic voltammetry, which is widely employed, allows for the determination of electronic characteristics such as molecular energy levels and orbital structure, redox properties, sensor capabilities, surface activity, and more. The carbazole molecule can undergo derivatization from various positions, allowing for alterations in its electrical and optical properties. These compounds serve as heterocyclic building blocks that can be utilized as materials for organic sensitizers and semiconductors in optoelectronic devices. Due to the presence of a hydrogen atom in the nitrogen-hydrogen (N-H) bond within the carbazole structure, which can be replaced with different functional groups, carbazole is highly suitable for nitrogen-based derivatization studies. In this study, two different carbazole monomers (IIa and IIIa), which could be potential optoelectronic, were synthesized using the Ullman and Suzuki-Miyaura reaction and characterized using 1H NMR, 13C NMR, UV-Vis, and Flouresence spectroscopy techniques. The cyclic voltammetry experiments were performed using three different working electrodes (Au, Gc, Pt disk electrodes) for each compound. Since the optimum oxidation of the compounds was obtained from the voltammograms on the gold disk electrode, this electrode was used in the calculation of energy levels. HOMO and Eg values of the compounds were deduced from cyclic voltammetry experiments and the optical absorption bands, respectively.","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"27 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139158353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of Damping Energy in Trusses 桁架阻尼能研究
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1406239
Victor Rizov
{"title":"Investigation of Damping Energy in Trusses","authors":"Victor Rizov","doi":"10.55549/epstem.1406239","DOIUrl":"https://doi.org/10.55549/epstem.1406239","url":null,"abstract":"<jats:p />","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139158999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Isotopic Geochemistry Applied on Marble Samples of Kythnos Island in Greece 希腊基斯诺斯岛大理石样本的同位素地球化学应用
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1406273
P. Karalis, E. Dotsika, Alexandros MAZARAKIS-AINIAN, Evaggelia Kolofotia, Iakovos Raptis, Anastasia Electra Poutouki, A. Drosou, B. Raco, Panagiotis Leandros Poutoukis, Dafni Kyropoulou, Dimitrios Tzovaras
{"title":"Isotopic Geochemistry Applied on Marble Samples of Kythnos Island in Greece","authors":"P. Karalis, E. Dotsika, Alexandros MAZARAKIS-AINIAN, Evaggelia Kolofotia, Iakovos Raptis, Anastasia Electra Poutouki, A. Drosou, B. Raco, Panagiotis Leandros Poutoukis, Dafni Kyropoulou, Dimitrios Tzovaras","doi":"10.55549/epstem.1406273","DOIUrl":"https://doi.org/10.55549/epstem.1406273","url":null,"abstract":"The present contribution aims to study the isotopic characteristics of various marbles from the archaeological site of Kythnos Island in the Cyclades, Greece. The database of this research is very important and useful in the conservation and restoration of monuments as these tasks should aim at preserving their material status and their authenticity. The characterization of marble taken from this site contributes significantly to the determination of the origin of the raw materials used in monuments in the wider area of the Aegean Sea. Samples were obtained mainly from the inner layers of the findings, which were not exposed to the weather conditions and without remarkable traces or signs of severe corrosion. The methods that were used required very small quantities of material. The measurements are considered almost non-destructive and based on isotopic geochemistry.","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139159381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effect of Antenna Spacing on Active S-Parameters in Planar Array Antennas 天线间距对平面阵列天线有源 S 参数的影响
The Eurasia Proceedings of Science Technology Engineering and Mathematics Pub Date : 2023-12-25 DOI: 10.55549/epstem.1406213
Emirhan Aydin, Ramiz ERDEM AYKAC
{"title":"The Effect of Antenna Spacing on Active S-Parameters in Planar Array Antennas","authors":"Emirhan Aydin, Ramiz ERDEM AYKAC","doi":"10.55549/epstem.1406213","DOIUrl":"https://doi.org/10.55549/epstem.1406213","url":null,"abstract":"<jats:p />","PeriodicalId":22384,"journal":{"name":"The Eurasia Proceedings of Science Technology Engineering and Mathematics","volume":"23 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139157456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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