Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering最新文献

Numerical Simulation of Fast Atmospheric Electric Discharge in the Tip-to-Plane Configuration. 尖顶对平面结构下大气快速放电的数值模拟。

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.09

V. Kozhevnikov, A. Kozyrev, A. Kokovin, V. Igumnov

引用次数: 0

ANTISTATIC EFFECT OF LIGNIN;AS A COST-EFFECTIVE ADDITIVE 木质素的抗静电作用;作为一种高性价比的添加剂

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.10

Fatma Demir, Mertcan Özel, Bilge Baytekin

{"title":"ANTISTATIC EFFECT OF LIGNIN;AS A COST-EFFECTIVE ADDITIVE","authors":"Fatma Demir, Mertcan Özel, Bilge Baytekin","doi":"10.33422/4ste.2019.02.10","DOIUrl":"https://doi.org/10.33422/4ste.2019.02.10","url":null,"abstract":"Lignin is a complex 3D organic polymer, consist of hydroxyl, methoxyl, carbonyl and carboxyl substitutions without an exactly known chemical structure. Occurring in higher plants, mainly in woody tissues of hardwood and softwood plants, lignin is the world’s second most abundant polymer which provides unique strength and elastic properties of the plants. Predominantly, lignin is obtained as a byproduct during the pulp production of the paper industry and millions of tons of lignin per year are mostly burned simply for energy. Such an abundant polymer also has some very useful features such as having antioxidant properties, being amorphous and behaving like thermoplastics. Thus, it is convenient to be used as a source of low molecular weight chemicals, dispersants, emulsifiers, and additives for polymeric materials. Since many industries such as polymer, electronics, space, medicine and etc. are dealing with troubles caused by static electric deposition; it is aimed, in this study, to provide a cheap and environment friendly method for avoiding electrostatic charge formation using lignin as an antistatic agent for elastomers. Elastomers doped with isolated natural lignin are characterized by various techniques and then, lignin doped samples are analyzed for surface charge density measurements (net charge and discharge time measurements) to assess the extent of antistatic behavior and the results are compared with the undoped samples. Acknowledgments: We acknowledge The Scientific and Technological Research Council of Turkey (TÜBİTAK) (Project No: 116Z523) for the grant and the financial support.","PeriodicalId":339076,"journal":{"name":"Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133909622","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

HYBRID QUENCHING IN HOT STAMPING PROTOTYPE PROCESS 热冲压成形过程中的混合淬火

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.19

A. Yilmaz, T. T. Abi

{"title":"HYBRID QUENCHING IN HOT STAMPING PROTOTYPE PROCESS","authors":"A. Yilmaz, T. T. Abi","doi":"10.33422/4ste.2019.02.19","DOIUrl":"https://doi.org/10.33422/4ste.2019.02.19","url":null,"abstract":"Lightweight design is getting more important issue day by day with emission restrictions. Passenger safety needs to care during lightweight design stages. Currently, hot stamping technology offers best solution for lightweight design and passenger safety issues. Hot stamping process improves materials forming limits with heat, improve strength of material via applying quenching and enable to manufacture thinner part with same strength. Process has disadvantages like, because of heating up sheet material long and high cost production line, high amount of energy consumption, high cost tool investment and finally high unit part price. Taking into account all of these issues, improvement in this process is very crucial and contributes too much to be a competitive company. That is why, an R&D project was started to investigate hybrid quenching process which is combination of press hardening and spray cooling. Usibor1500 (22MnB5) will heat up and stamp with a prototype tool. Before the cooling process finish, taking the part out of tool at elected temperatures (450-400-350 °C) and complete martensitic transition with spray cooling. Hot forming and spray cooling simulations will conduct, prototype tools and spray cooling unit will design and simulation results will compare with prototype manufacturing.","PeriodicalId":339076,"journal":{"name":"Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering","volume":"620 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114876790","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

Mulberry paper-based graphene strain sensor for wearable electronics with high mechanical strength and large area. 用于可穿戴电子产品的桑叶纸石墨烯应变传感器，具有高机械强度和大面积。

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.13

Xue Qi, Sooman Lim

{"title":"Mulberry paper-based graphene strain sensor for wearable electronics with high mechanical strength and large area.","authors":"Xue Qi, Sooman Lim","doi":"10.33422/4ste.2019.02.13","DOIUrl":"https://doi.org/10.33422/4ste.2019.02.13","url":null,"abstract":"The technology of flexible and wearable strain sensors has developed rapidly in recent years. In this work, we prepared a mulberry paper-based graphene strain sensor via bar coating technique for wearable electronics with high mechanical strength and large area. For the fabrication of strain sensor, graphene flakes dispersion was coated on the mulberry papers with various coating thicknesses. Then, we investigated the characteristics of strain sensor such as, electrical performance with strain, mechanical strength, flexibility, environmental stability and degradability of the as-fabricated strain sensor. Experimental results suggest that the spacing between graphene flakes plays a decisive role in determining the sensing properties. In addition, mulberry paper has a long fiber length and high air permeability, resulting in improvement of mechanical durability and a wide range of coatings. Overall, the mulberry paper-based graphene strain sensor with a bar-coating process can be a cost-effective and time-consuming alternative to manufacturing wearable strain sensors and has great potential in nextgeneration wearable intelligent system applications.","PeriodicalId":339076,"journal":{"name":"Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114673320","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 Cleanness and Purity of Muslim woman’s soul and heart or home traditions 穆斯林妇女灵魂和心灵的纯洁和家庭传统

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.12

Islomova Zilola Rustamovna

引用次数: 0

Screen-printed EMI shielding materials on Mulberry paper for wearable electronics with high mechanical strength 高机械强度可穿戴电子产品用桑皮纸丝网印刷电磁干扰屏蔽材料

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.14

Hoseong Song, Sooman Lim

引用次数: 0

SPRINGBACK COMPANSATION WITH USING TWO DIFFERENT RADIUS IN BENDING U FORM SHAPE SHEET METAL PARTS 回弹补偿采用两种不同半径的弯曲u形钣金件

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.17

T. T. Abi, A. Yilmaz

{"title":"SPRINGBACK COMPANSATION WITH USING TWO DIFFERENT RADIUS IN BENDING U FORM SHAPE SHEET METAL PARTS","authors":"T. T. Abi, A. Yilmaz","doi":"10.33422/4ste.2019.02.17","DOIUrl":"https://doi.org/10.33422/4ste.2019.02.17","url":null,"abstract":"Springback is the major problem in U –shaped part forming. Prediction and compensation of springback at the design stage is very important from industrial perspectives. Achieving the required geometries for companies in the desired accuracy and in a short time increases their competitive direction. The compensation for springback in U-form parts requires a large number of analyzes and workshops. In U-form parts, shaping the vertical walls at the desired angle in one-form operation is impossible due to the spring-back of the sheet metal. For this reason, using 2 form operations, the first form operation is reached to a certain value and the second form operation tries to close the aperture which is more than the desired value in U form. In the project, it is aimed to determine the parameters affecting the formation of U-shaped and 90degree vertical wall by applying 2 shear bending operations to flat sheet metal. For this purpose, 5 different sheet thicknesses (1,2-1,8-2-2,5-3mm), 2 different sheet metal grades (HR340LA, DP600), 4 different radius values (4-8-16-32mm) and 3 different reduction rate (5-10-15%) was used. In order to reduce the time and costs in the design phase, a total of 192 tests were performed and the effect of parameters on the springback was investigated.","PeriodicalId":339076,"journal":{"name":"Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125537802","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

Energy Density Increment in Li-ion rechargeable battery using LiCoO2/LiV3O8 and graphite/Li-metal composite electrode cell 利用LiCoO2/LiV3O8和石墨/锂金属复合电极电池提高锂离子可充电电池的能量密度

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.18

KiHo Bae, Byung hyuk Kim, S. Cho, W. Y. Woon

{"title":"Energy Density Increment in Li-ion rechargeable battery using LiCoO2/LiV3O8 and graphite/Li-metal composite electrode cell","authors":"KiHo Bae, Byung hyuk Kim, S. Cho, W. Y. Woon","doi":"10.33422/4ste.2019.02.18","DOIUrl":"https://doi.org/10.33422/4ste.2019.02.18","url":null,"abstract":"Lithium cobalt oxide (LiCoO2; LCO), uses as cathodes in current battery systems, exhibits good capacity retention and high nominal voltage. However, its low theoretical capacity and energy density have limits for further high energy required devices such as electrical vehicles or energy storage system. To solve this disadvantages, lithium trivanadate (LiV3O8, LVO) was applied as a co-active material which has a relatively high theoretical capacity (280 mAg h) and good cycle stability. By investigating the various ratios of LCO:LVO, the optimal condition is found for yielding the best electrochemical performance. In other words, this optimal ratio features the advantage of LVO's high discharge capacity while maintaining LCO's capacity retention ability. For the full cell test, Li-metal powder (LP) and graphite were applied as anode materials. LP is synthesized by the droplet emulsion technique and this shape is prohibited dendrite growth. The LP layer was formed on the graphite anode surface by the dipping method. The new lithium metal secondary battery system (LCO+LVO composite cathode and graphite+Li-metal composite anode) was tested at various C-rate with cut-off voltage ranging from 1.8 to 4.0 V (versus Li/Li). And the structure, morphology, and electrochemical properties of the new type of battery’s electrode were investigated by the implementation of X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), and energy dispersive spectroscopy (EDS). The result was analyzed by electrochemical impedance spectroscopy (EIS).","PeriodicalId":339076,"journal":{"name":"Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127185532","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

Study of surface modified lithium powder electrode for lithium metal batteries with use of Taylor- Couette Flow 用Taylor- Couette Flow研究锂金属电池表面改性锂粉电极

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.16

Ji-woong Kim, W. Yoon

{"title":"Study of surface modified lithium powder electrode for lithium metal batteries with use of Taylor- Couette Flow","authors":"Ji-woong Kim, W. Yoon","doi":"10.33422/4ste.2019.02.16","DOIUrl":"https://doi.org/10.33422/4ste.2019.02.16","url":null,"abstract":"Li metal is the most promising anode material for the next generation secondary battery system because of its high theoretical specific energy density (3860mAhg-1) and the lowest electrochemical potential(-3.04 V versus the standard hydrogen electrode). However, there still remain safety issues arising from dendrite formation during lithium plating process. These issues are the biggest obstacles of commercial availability of lithium-metal battery system. Surface modified lithium powder can be a valuable alternative for its low effective current density, which results from its high specific surface area, and stable interface. Previous research produced lithium powder by using droplet emulsion technique (DET). However, DET method is not suitable for continuous producing and in-situ coating. Here we suggest a new method for the continuous production of the surface modified lithium powder with the use of Taylor-Couette flow. Taylor-Couette flow contactor is an attractive tool for the multiphase systems due to its strong mixing power. An electron probe x-ray micro-analyzer (EPMA) and a scanning electron microscope (SEM) were used to determine the size of the powder and identify the coating layer. Furthermore, electrochemical analysis confirmed the stability of surface modified lithium powder anode. This study can provide a new way to produce the surface modified lithium powder as an anode material for lithium metal battery systems such as Li-LVO, Li-S and Lioxygen batteries.","PeriodicalId":339076,"journal":{"name":"Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126843093","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 IMPACT OF MODELING ON THE ARCHITECTURAL PROJECT FORMATION (ARCHITECTURE STUDENTS IN IRAQ AS A CASE STUDY) 建模对建筑项目形成的影响(以伊拉克建筑系学生为例)

Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering Pub Date : 2019-02-15 DOI: 10.33422/4ste.2019.02.08

Saad Mohsin Hmoud, Noor Mukhlis Ibrahim

{"title":"THE IMPACT OF MODELING ON THE ARCHITECTURAL PROJECT FORMATION (ARCHITECTURE STUDENTS IN IRAQ AS A CASE STUDY)","authors":"Saad Mohsin Hmoud, Noor Mukhlis Ibrahim","doi":"10.33422/4ste.2019.02.08","DOIUrl":"https://doi.org/10.33422/4ste.2019.02.08","url":null,"abstract":"This research aims to find modeling strategies that students of architectural department used to producing and formation their architectural projects and study the impact of modeling types (handmade model, digital model, parametric model, etc.) on the relationship between architect conception and client Understanding. Research methodology: At the first section, the study examines the modeling concept, messages, Communication and the significance of model and modeling strategies. In the second section of the study discussed the modeling formation, Form production methods, modeling mechanisms types and what’s modeling methods that Adoption from the students and how that Consistent in the expression of the they architecture concepts. The research presented the modeling and design methodology and that Effectiveness on development students Skills and abilities in project presentation and understanding the simple forms and the complicated forms. In the third section of the study, Research analyze different student’s projects and find the strategies of modeling according to the equipment available to them. The Multiple modeling is introduced as a key modeling strategy in architecture project formation and definition the impact of differentiation modeling type on understanding the architecture design and presentation methods.","PeriodicalId":339076,"journal":{"name":"Proceedings of the 4th International Conference on Modern Approaches in Science, Technology & Engineering","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116443169","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