Materials Science Forum最新文献_第5页

Effect of Mercerization on the Crystallographic, Macromolecular, and Thermal Properties of Plantain Fibers for Fiber Reinforced Composite 丝光处理对用于纤维增强复合材料的车前草纤维的晶体学、大分子和热性能的影响

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-ki55mr

Patrick Ehi Imoisili, Tien Chien Jen

引用次数: 0

Advanced Composite and Engineering Materials 先进复合材料和工程材料

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/b-qw4jon

A. Abioye, Dao Hua Zhang, P. Chutima, H. Watari

引用次数: 0

Stress Intensity Factor of E-Glass Fiber Reinforced Polyester Composites 电子玻璃纤维增强聚酯复合材料的应力强度因子

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-nld6we

Meshach Osaretin, Sylvester Onyemaechi Edelugo, Patrick Udeme Akpan, C. Agbo, P. Ozor, N.I. Sukdeo

引用次数: 0

Post-Buckling Analysis of E-Glass Fiber Reinforced Thin-Walled Cylindrical Composite 电子玻璃纤维增强薄壁圆柱复合材料的屈曲后分析

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-jltwg1

B. Ugwu, John N. Ani, Timine Suoware, Sylvester Onyemaechi Edelugo

{"title":"Post-Buckling Analysis of E-Glass Fiber Reinforced Thin-Walled Cylindrical Composite","authors":"B. Ugwu, John N. Ani, Timine Suoware, Sylvester Onyemaechi Edelugo","doi":"10.4028/p-jltwg1","DOIUrl":"https://doi.org/10.4028/p-jltwg1","url":null,"abstract":"Post buckling analysis of E-glass fiber reinforced cylindrical composite under axial compression using both experimental and numerical method is presented. Using the Eigen value buckling analysis, the studies employ a mixture ratio of E-glass fiber composite of chopped strand mat. Five molds of each E-glass fiber mixture were reinforced with polyester resin to produce cylindrical shells of equal dimensions. Various cylindrical specimens’ predicted critical buckling load were tested and recorded using a compressive loading machine. Comparisons were made to ascertain the cylindrical shells buckling and post buckling behavior at certain load levels between the experimental and analytical results. A one-way Anova was used to compare the outcome of the theoretical, experimental and numerical methods of analysis and the result showed that there is no evidence to suggest difference between the three methods applied in the buckling load analysis. The post buckled shapes of the samples were obtained and recorded as bulge diamond shape of a buckled cylindrical structure. The effective mechanical properties of the chopped strand mat (CSM) reinforced composite cylinder were recorded from the experiment which has modulus of Elasticity 197.707 N/mm2, Poisson’s ratio of 0.22 and density of 1250 Kg/m3.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"1981 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140416841","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

Assessment of the Arc Resistance of 3D-Printed Insulation Materials for Outdoor High-Voltage Applications 评估三维打印绝缘材料在户外高压应用中的抗电弧能力

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-kyre5l

Pattarabordee Khaigunha, A. Suksri, T. Wongwuttanasatian

{"title":"Assessment of the Arc Resistance of 3D-Printed Insulation Materials for Outdoor High-Voltage Applications","authors":"Pattarabordee Khaigunha, A. Suksri, T. Wongwuttanasatian","doi":"10.4028/p-kyre5l","DOIUrl":"https://doi.org/10.4028/p-kyre5l","url":null,"abstract":"High-voltage electrical equipment insulation often uses composite materials like epoxy resin, cross-linked polyethylene, polyurethane, and silicone rubber as encapsulation. 3D printing technology offers a more efficient and cost-effective solution, producing intricate elements without cutting and casting. Research shows that 3D printed materials have comparable properties to polymer-based insulation, but further testing is needed to evaluate their resistance to harsh environmental conditions. This research investigates the arc resistance properties of 3D printed insulation materials for outdoor high-voltage applications, assessing their suitability for outdoor applications. The wet and dry arc resistance tests were performed in accordance with ASTM D495-99 and IEC-60587. The present work investigated three varieties of samples: polylactic acid, epoxy resin, and silicone rubber. The results of the tests reveal that polylactic acid test samples have average wet and dry arc resistance times of 2.5 hours and 1.4 seconds, which is less than silicone rubber and epoxy resin. Additional research is required to comprehend the behavior of arc formation in polylactic acid insulation materials for high-voltage 3D printing applications.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"30 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140412990","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

Nano-Titanium Dioxide Filler Particles in Soybean Methyl Ester for an Improvement of Electrical Breakdown Strength of Soybean Vegetable Oil as a Transformer Oil Substitute 大豆甲酯中的纳米二氧化钛填料颗粒用于提高大豆植物油作为变压器油替代品的电气击穿强度

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-d5rvuj

Nichakorn Khonchaiyaphum, T. Wongwuttanasatian, A. Suksri

{"title":"Nano-Titanium Dioxide Filler Particles in Soybean Methyl Ester for an Improvement of Electrical Breakdown Strength of Soybean Vegetable Oil as a Transformer Oil Substitute","authors":"Nichakorn Khonchaiyaphum, T. Wongwuttanasatian, A. Suksri","doi":"10.4028/p-d5rvuj","DOIUrl":"https://doi.org/10.4028/p-d5rvuj","url":null,"abstract":"Power transformers use mineral oil as an insulating liquid due to its excellent dielectric properties. However, mineral oil is a non-renewable resource and is toxic to the environment when leaked. The purpose of this research is to examine vegetable oil containing nanotitanium dioxide as a substitute for mineral transformer oil. Vegetable insulating oils are environmentally benign and have good breakdown voltage (BV) and high ignition points that can decompose naturally in the event of a leak. Nevertheless, the high viscosity of vegetable oil slows down the flow rate in the transformer cooling. To overcome this problem, the process of transesterification was used to produce soybean methyl ester (SBME). SBME is used as an insulating liquid including composite filler of titanium dioxide (TiO2) nanoparticles. Electrical breakdown voltage (BV) tests were performed following ASTM D1816 standards. Results demonstrated that SBME has a greater BV than natural soybean oil. Also, the addition TiO2 nanoparticles increases the BV of the SBME’s mixture. All cases of nanoparticle methyl ester (NPME) conducted in the experiments exhibited a BV higher than 28 kV which is well above the standard value.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"25 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140414082","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

Mechanism and Kinetics of Water Absorption of Plantain Fibre Reinforced Bio-Composites 车前草纤维增强生物复合材料的吸水机理与动力学

Materials Science Forum Pub Date : 2024-02-29 DOI: 10.4028/p-3asjyr

Patrick Ehi Imoisili, Tien Chien Jen

引用次数: 0

Green Synthesis of Magnetite Nanoparticles using Moringa oleifera and their Electro-Optic Surface Plasmon Resonance Properties 利用油杉绿色合成磁铁矿纳米粒子及其电光表面等离子共振特性

Materials Science Forum Pub Date : 2024-02-22 DOI: 10.4028/p-l9rtig

Sari Wahyuni, Muhammad Riswan, Rivaldo Marsel Tumbelaka, Rona Cuana, N. Istiqomah, E. Suharyadi

{"title":"Green Synthesis of Magnetite Nanoparticles using Moringa oleifera and their Electro-Optic Surface Plasmon Resonance Properties","authors":"Sari Wahyuni, Muhammad Riswan, Rivaldo Marsel Tumbelaka, Rona Cuana, N. Istiqomah, E. Suharyadi","doi":"10.4028/p-l9rtig","DOIUrl":"https://doi.org/10.4028/p-l9rtig","url":null,"abstract":"The application of an external electric field to the surface plasmon resonance (SPR) system of green-synthesized magnetite (Fe3O4) nanoparticles (MNPs) is very promising for increasing the SPR detection signal. Electro-optic surface plasmon resonance (EOSPR) behavior of MNPs has been successfully carried out. The EOSPR system was investigated using the Kretschmann configuration with the prism/Au thin film/MNPs/air layer arrangement and applying an electric voltage of 0 V, 2 V, 4 V, and 6 V. In this study, we synthesized MNPs using the green synthesis approach from moringa oleifera extract. The benefits of green synthesis include being safe, affordable, clean, and ecologically friendly processes. X-ray diffraction results obtained crystal size of the MNPs is about 9.2 nm with inverse spinel face-centered cubic crystal structure. Fourier transforms infrared characterization showed the presence of Fe-O bonds at wave numbers 569 cm-1 and 629 cm-1, indicating that MNPs were successfully formed. The saturation magnetization of the samples is 55.3 emu/g. The SPR angle of the SPR system Prism/Au thin film/air without the addition of MNPs is 44.66°. After being deposited by MNPs and induced by a voltage of 0 V, 2 V, 4 V, and 6 V, the SPR angles changed to 44.87°, 44.90°, 44.95° and 45.12°. The addition of MNPs and an external electric field causes the SPR angle to increase. The results of this study can provide new insights into the development of optical devices that can be manipulated electrically and have the potential for future biosensor applications.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"19 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140440372","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

Enhanced Magnetic Properties of Gd-Doped ZnO by Varying the Gd Concentration via Co-Sputtering Technique 通过共切削技术改变掺钆氧化锌的钆浓度来增强其磁性能

Materials Science Forum Pub Date : 2024-02-22 DOI: 10.4028/p-rxb3gr

N. A. Raship, S. Tawil, N. Nayan

{"title":"Enhanced Magnetic Properties of Gd-Doped ZnO by Varying the Gd Concentration via Co-Sputtering Technique","authors":"N. A. Raship, S. Tawil, N. Nayan","doi":"10.4028/p-rxb3gr","DOIUrl":"https://doi.org/10.4028/p-rxb3gr","url":null,"abstract":"This study reports on the effect of Gd concentrations on the properties of Gd-doped ZnO films. The films were prepared using co-sputtering method at room temperature. Characterization tools such as X-ray diffraction (XRD), atomic force microscopy (AFM), and vibrating sample magnetometer (VSM) were used to analyze the properties of the prepared films. XRD results observed that all the films are well crystalline and designated to the hexagonal wurtzite structure of ZnO with no secondary phases, which confirmed the successful of doping the Gd into ZnO. Topography analysis from AFM discovered the increase of Gd concentrations of Gd-doped ZnO films leads to the increase in grain size and rougher surface of the films. The magnetization of the films effectively depends on the Gd concentrations, which the diamagnetic behavior changed to ferromagnetic behavior upon Gd doping. A film with higher Gd doping concentration is more effective than lower Gd doping in terms of saturation magnetization (Ms), coercivity (Hc) and remanent magnetization (Mr). These findings revealed that optimizing the Gd concentration is very crucial in enhancing the magnetic properties of Gd-doped ZnO films.","PeriodicalId":507742,"journal":{"name":"Materials Science Forum","volume":"16 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140441884","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 Mechanical Properties of Polypropylene Composite with Difference Composition of Nucleating Agent Based Sorghum Fiber 基于高粱纤维的不同成核剂聚丙烯复合材料力学性能研究

Materials Science Forum Pub Date : 2024-02-22 DOI: 10.4028/p-o1uqpx

Zarlina Zainuddin, T. Nurtiasto, A. F. Nugraha, J. A. Laksmono, Mochamad Chalid

引用次数: 0