International journal of automotive science and technology最新文献_第2页

Investigation of Energy Absorbing Characteristics and Damage Mechanisms of Triply Periodic Minimal Surface Structures fabricated by Powder Bed Fusion Technology 粉末床熔融技术制造的三周期极小表面结构的能量吸收特性和损伤机理研究

International journal of automotive science and technology Pub Date : 2023-12-06 DOI: 10.30939/ijastech..1360762

İsmail Özen, Mustafa Aslan

{"title":"Investigation of Energy Absorbing Characteristics and Damage Mechanisms of Triply Periodic Minimal Surface Structures fabricated by Powder Bed Fusion Technology","authors":"İsmail Özen, Mustafa Aslan","doi":"10.30939/ijastech..1360762","DOIUrl":"https://doi.org/10.30939/ijastech..1360762","url":null,"abstract":"Cellular porous structures are used as an alternative to blocking structures in industrial fields where multi-functionality and mechanical efficiency are necessary. Many industries, such as automotive, aerospace and defense, utilize the benefits of these structures due to their high specific strength, outstanding noise and vibration damping abilities, thermal shielding, and superior specific energy absorption capacities. \u0000 This study aims to reveal energy absorbing behavior and deformation mechanisms under compression load of gyroid and diamond cell based triply periodic minimal surface (TPMS) structures manufactured by powder bed fusion (PBF) technology. The TPMS lattice structures fabricated using AlSi10Mg material were designed in different relative densities according to cell wall thickness and cell number. Crushing behaviors of these structures were numerically investigated with a commercial Ls-Dyna finite elements (FE) software. The numerical results were obtained in a good agreement with the experimental data. The FE analysis facilitated understanding of the deformation damage mechanisms and stress distribution on the cell surfaces of the TPMS lattice structures designed with different relative densities. The findings of the study demonstrated that peak stress values computed during crushing of the TPMS lattice structures went up significantly with increasing relative density. In addition, specific energy absorption capacity of the diamond cell based TPMS lattice structures obtained 50% more than that of the gyroid cell based TPMS lattice structures with close relative densities.","PeriodicalId":474498,"journal":{"name":"International journal of automotive science and technology","volume":"26 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138984504","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

Treatment of Automotive Paint Wastewater: Photocatalytic degradation of methylene blue using semi-conductive ZrO2 汽车涂料废水的处理:半导电ZrO2光催化降解亚甲基蓝

International journal of automotive science and technology Pub Date : 2023-11-03 DOI: 10.30939/ijastech..1378268

Mustafa SEYREK, Filiz BORAN, Merve OKUTAN

{"title":"Treatment of Automotive Paint Wastewater: Photocatalytic degradation of methylene blue using semi-conductive ZrO2","authors":"Mustafa SEYREK, Filiz BORAN, Merve OKUTAN","doi":"10.30939/ijastech..1378268","DOIUrl":"https://doi.org/10.30939/ijastech..1378268","url":null,"abstract":"Addressing water pollution, particularly in the automotive industry's painting processes, is vital due to its significant environmental impact, and the use of photocatalysis, an environmentally friendly and energy-efficient advanced oxidation method, holds promise for removing non-biodegradable organic dyes from wastewater. In this study, the use of semiconductor ZrO2 nanoparticles in the photocatalytic degradation of pollutants in wastewater under UV light was investigated. Zeta potential, Brunauer–Emmett–Teller (BET) surface area and UV-Vis absorption spectroscopy analyses were performed on the ZrO2 nanoparticle synthesized under optimized experimental conditions. ZrO2 nanoparticles synthesized under the optimized experimental conditions exhibited a high specific surface area (51.793 m2/g). ZrO2 nanoparticles had strong absorption in the visible light region, and the energy band gap was estimated to be approximately 3.062 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under UV light (366 nm). The effects of parameters such as the amount of catalyst, concentration and pH of the dye solution, the wavelength of the UV light source used (366 and 254 nm) and the type of test environment on the removal efficiency of methylene blue were investigated. ZrO2 nanoparticles showed a high degradation efficiency of 91% in a strong alkaline environment, which may be the result of the facilitated formation of –OH radicals due to the increased concentration of hydroxyl ions.","PeriodicalId":474498,"journal":{"name":"International journal of automotive science and technology","volume":"38 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135873101","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 Tribological Properties of Brake Friction Materials Developed from Industrial Waste Products 工业废料制制动器摩擦材料摩擦学性能研究

International journal of automotive science and technology Pub Date : 2023-11-03 DOI: 10.30939/ijastech..1373026

Furkan AKBULUT, Halil KILIÇ, İbrahim MUTLU, Fatma Sena ÖZTÜRK, Eray ÇAŞIN, Mustafa SEYREK, Abdullah KARAKÖSE

{"title":"Investigation of Tribological Properties of Brake Friction Materials Developed from Industrial Waste Products","authors":"Furkan AKBULUT, Halil KILIÇ, İbrahim MUTLU, Fatma Sena ÖZTÜRK, Eray ÇAŞIN, Mustafa SEYREK, Abdullah KARAKÖSE","doi":"10.30939/ijastech..1373026","DOIUrl":"https://doi.org/10.30939/ijastech..1373026","url":null,"abstract":"Various international initiatives on environmental issues and the need to protect the environment are promoting the use of industrial waste in a variety of applications, including automotive brake pads. These studies show that the reuse of industrial waste can help to reduce the environmental impact. The development of environmentally friendly and cost-effective composites for use in a variety of engineering applications is the need of the century. The use of industrial waste in composite production is a possible solution for both problems. In this study, the potential use of talc, quartz and ceramic waste FFC fracture as a friction modifier in brake friction materials and its performance properties in accordance with industry requirements were investigated. The tribological, physical and mechanical properties of the brake pads were measured, and the friction surface morphology was investigated by scanning electron microscopy. According to the results obtained, the highest specific wear rate was observed in the FM3 sample. The FM2 sample with the highest hardness and average friction coefficient showed the lowest wear. FM4, FM5 and FM6 samples with high talc and quartz content exhibited low coefficient of friction characteristics compared to other samples.","PeriodicalId":474498,"journal":{"name":"International journal of automotive science and technology","volume":"38 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135873102","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

Bending Behavior of 3D Printed Polymeric Sandwich Structures with Various Types of Core Topologies 具有不同核心拓扑类型的3D打印聚合物三明治结构的弯曲行为

International journal of automotive science and technology Pub Date : 2023-10-26 DOI: 10.30939/ijastech..1360280

Merve TUNAY, Mehmet Fatih BODUR

引用次数: 0

Modeling and Control of a PEM Fuel Cell Hybrid Energy System Used in a Vehicle with Fuzzy Logic Method 车用PEM燃料电池混合能源系统的模糊建模与控制

International journal of automotive science and technology Pub Date : 2023-10-21 DOI: 10.30939/ijastech..1340339

Nurettin Mert BOYACIOĞLU, Tolga KOCAKULAK, Mustafa BATAR, Ahmet UYUMAZ, Hamit SOLMAZ

{"title":"Modeling and Control of a PEM Fuel Cell Hybrid Energy System Used in a Vehicle with Fuzzy Logic Method","authors":"Nurettin Mert BOYACIOĞLU, Tolga KOCAKULAK, Mustafa BATAR, Ahmet UYUMAZ, Hamit SOLMAZ","doi":"10.30939/ijastech..1340339","DOIUrl":"https://doi.org/10.30939/ijastech..1340339","url":null,"abstract":"PEM (Proton Exchange Membrane) fuel cells, which are commonly used in vehicles, are critical for sustainable transportation in the future. In this study, it is aimed to en-hance the system efficiency of the PEM fuel cell and provide fuel economy. To achieve this goal, the hybrid energy system with a PEM fuel cell and battery pack is controlled with two different strategies. The first control strategy is designed using Fuzzy Logic (FL), while the other control strategy is designed with the classical on-off method with the 'Relay' block. Power output of the fuel cell is determined depending on the change in the charging state of the battery pack and the power consumed by the electric vehicle in this study. The aim is to provide that the fuel cell operates in a high-efficiency range and can generate enough power when needed. Vehicle and fuel cell modeling were per-formed in Matlab/Simulink environment. NEDC (New European Driving Cycle) and WLTP (Worldwide Harmonized Light Vehicles Test Procedure) driving cycles were considered and fuel cell efficiency and hydrogen consumption were compared at dif-ferent state of charge values of the battery. The analyses were carried out over long dis-tances by repeating the driving cycles. It was observed that fuzzy logic control provid-ed 11.6% less fuel consumption than classic on-off control in NEDC and WLTP driving cycles repeated five times. The values obtained as a result of the study showed that fuzzy logic control is more advantageous to increase the energy efficiency of fuel cells.","PeriodicalId":474498,"journal":{"name":"International journal of automotive science and technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135514382","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

EFFECTS OF ADDING WASTE OIL ETHYLENE GLYCOL BUTYL ETHER TO DIESEL FUEL 柴油中加入废油乙二醇丁醚的影响

International journal of automotive science and technology Pub Date : 2023-10-06 DOI: 10.30939/ijastech..1321150

Salih ÖZER, Cem CENAB

引用次数: 0

Investigation of the effect of camshaft profiles designed with the circular arc curve method for a common rail dual fuel engine on vibration and noise emissions 用圆弧曲线法设计的共轨双燃料发动机凸轮轴轮廓对振动和噪声排放的影响研究

International journal of automotive science and technology Pub Date : 2023-10-02 DOI: 10.30939/ijastech..1300577

Halil Erdi GÜLCAN, Nurullah GÜLTEKİN, Murat CİNİVİZ

{"title":"Investigation of the effect of camshaft profiles designed with the circular arc curve method for a common rail dual fuel engine on vibration and noise emissions","authors":"Halil Erdi GÜLCAN, Nurullah GÜLTEKİN, Murat CİNİVİZ","doi":"10.30939/ijastech..1300577","DOIUrl":"https://doi.org/10.30939/ijastech..1300577","url":null,"abstract":"In this study, the design and manufacturing of cam profiles with different valve lifts were carried out using the geometric spring curve method for a single-cylinder, four-stroke common rail diesel engine. Subsequently, the impact of the designed cam profiles on vi-bration and noise emissions in conventional diesel combustion was examined. The effects of the cam profiles obtained using the circular spring curve method and fitted with Fourier series on the tappet's speed, acceleration, and leap were examined, and then the cam pro-files to be manufactured were determined. Experimental tests were conducted on vibra-tion and noise emissions using the manufactured cam profiles with pure diesel fuel at five different engine loads and a constant engine speed. When the results are examined, in-creasing the valve lift amount compared to the original cam resulted in an approximate 24% increase in vibration level, while decreasing the valve lift amount reduced the vibra-tion level by approximately 20%. the effect of cam profile modification on average noise emissions was quite evident.","PeriodicalId":474498,"journal":{"name":"International journal of automotive science and technology","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135900482","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

Theoretical Fundamentals of Scaled Business Agility and Project Portfolio Management at Automotive Manufacturers 汽车制造商规模业务敏捷性和项目组合管理的理论基础

International journal of automotive science and technology Pub Date : 2023-09-30 DOI: 10.30939/ijastech..1284202

Christian MANN, Patrick SİEGFRİED, Alex MİCHEL

{"title":"Theoretical Fundamentals of Scaled Business Agility and Project Portfolio Management at Automotive Manufacturers","authors":"Christian MANN, Patrick SİEGFRİED, Alex MİCHEL","doi":"10.30939/ijastech..1284202","DOIUrl":"https://doi.org/10.30939/ijastech..1284202","url":null,"abstract":"This study has the aim to explain the theoretical fundamentals of scaled agile business structures and of the traditional project portfolio management before laying out the discrepancies of agility with project portfolio management at large enterprises such as automotive manufacturers. For the exploration of the scarcely addressed topic of agility at portfolio level, current journals were mainly consulted. Further, for the theoretical exposition of project portfolio management, current journals and textbooks about business strategies and project management were used as well as journals for information about portfolio management. As a result of this paper, it was found that the difference of agile delivery to the traditional organization is the focus on small work packages instead of detailed long -term planning. When focusing on smaller work packages, portfolio planning becomes more iterative and bottom-up ideas have a higher impact on program level.  For other industries then automotive manufacturers, other company sizes, or even other automotive manufacturers, which are built from the ground up to be more agile, the findings of this paper are not relevant.","PeriodicalId":474498,"journal":{"name":"International journal of automotive science and technology","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272372","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

Structural Optimization of the Brake Pedal using Artificial Intelligence 基于人工智能的制动踏板结构优化

International journal of automotive science and technology Pub Date : 2023-09-30 DOI: 10.30939/ijastech..1330096

Özlem AKÇAY

{"title":"Structural Optimization of the Brake Pedal using Artificial Intelligence","authors":"Özlem AKÇAY","doi":"10.30939/ijastech..1330096","DOIUrl":"https://doi.org/10.30939/ijastech..1330096","url":null,"abstract":"In this study, weight reduction was performed on the brake pedal, which is one of the most important parts of the braking system, by using topology and shape optimi-zation, one of the structural optimization methods, respectively. The aim of the study is to develop an optimal design that reduces vehicle weight by finding the optimal material distribution for the brake pedal. The weight reduction process was carried out in two steps. In the first step, static analyses were performed on the starting brake pedal model. Later, topology optimization was performed for weight reduction pur-poses. After the topology optimization, new brake pedal design was created and weight reduction was performed. In the second step, shape optimization was per-formed using a genetic algorithm to obtain the optimal dimensions of the brake pedal. According to the optimization results, the weight of the design was reduced from 437 grams (g) to 326 grams (g) by topology optimization in the first step. So the new de-sign is 25.4% lighter compared to the first design. Later, as a result of shape optimiza-tion performed using a genetic algorithm, the weight was reduced from 326 g to 298 g and the optimal dimensions of the brake pedal were determined. Thus, with shape op-timization, a lighter brake pedal design of about 8.5% was achieved compared to to-pology optimization. As a result, the weight has been reduced from 437 g to 298 g, and the weight of the ideal brake pedal model is 31.8% lighter compared to the main model.","PeriodicalId":474498,"journal":{"name":"International journal of automotive science and technology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136272375","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

Edge AI-Assisted IoV Application for Aggressive Driver Monitoring: A Case Study on Public Transport Buses 边缘人工智能辅助车联网应用于主动驾驶员监控:以公共交通公交车为例

International journal of automotive science and technology Pub Date : 2023-09-30 DOI: 10.30939/ijastech..1335390

Hakkı SOY

{"title":"Edge AI-Assisted IoV Application for Aggressive Driver Monitoring: A Case Study on Public Transport Buses","authors":"Hakkı SOY","doi":"10.30939/ijastech..1335390","DOIUrl":"https://doi.org/10.30939/ijastech..1335390","url":null,"abstract":"With increasing adoption of digital technologies to automotive industry, the revo-lution of the vehicles opens new doors for many advanced applications to improve the driver safety and comfort. Thanks to Advanced Driver Assistance Systems (ADAS), no doubt that the future driving experience will be safer than today. De-spite the emergence of new trends, road accidents caused by aggressive driving are still a major problem in many countries. This study presents an edge AI-assisted ag-gressive driver monitoring system based on Internet of Vehicles (IoV) model. In the proposed system, the kNN algorithm and dynamic time warping method are used to recognize the signal patterns of aggressive drivers. The hardware platform is built on the RP2040 microcontroller-based Raspberry Pi Pico board and the Waveshare Quad Expander used for sensor extensions. The MPU-9250 9-axis motion tracking sensor is used as an inertial measurement unit (IMU) to identify the patterns of driv-ers who did sudden lane changes, heavy acceleration, and harsh braking on the roads. Besides, the required software is created using the MicroPython scripting language via Thonny IDE. The proposed method is tested on public transport vehi-cles to determine the drivers engaging in dangerous driving behavior for passengers. The obtained results show that the proposed method can provide satisfactory success to support for recognizing the aggressive behavior of drivers.","PeriodicalId":474498,"journal":{"name":"International journal of automotive science and technology","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136277551","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