Advances in Science and Technology-Research Journal最新文献_第4页

Experimental Investigation on an Algorithm for Testing the Quality of Powder Distribution During 3D Printing Process 3D打印过程中粉末分布质量检测算法的实验研究

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/171809

Marcin Korzeniowski, Aleksandra Małachowska, Mateusz Biały, Maria Kanczewska, Michał Tkaczyk, Krzysztof Grajczyk

{"title":"Experimental Investigation on an Algorithm for Testing the Quality of Powder Distribution During 3D Printing Process","authors":"Marcin Korzeniowski, Aleksandra Małachowska, Mateusz Biały, Maria Kanczewska, Michał Tkaczyk, Krzysztof Grajczyk","doi":"10.12913/22998624/171809","DOIUrl":"https://doi.org/10.12913/22998624/171809","url":null,"abstract":"Metal 3D printing is a modern manufacturing process that allows the production of geometrically complex structures from metallic powders of varying chemical composition. This paper shows the results of testing the powder feeding and distribution system of the developed 3D printer. The device using the SLM method (Selected Laser Melting) was developed by research team of WroclawTech and used in this investigation. The powder feeding and distribution system was tested using a vision system integrated into the printer control system. Thousands of tests performed made it possible to identify the reasons corresponding to incorrect powder distribution on the working field. In addition, a quality control algorithm was developed and implemented in the MatLab environment. Algo - rithms based on image analysis automatically identifies powder distributed in an unacceptable way. An 88% accu - racy rate was achieved for identifying defects in all images within a dataset of 600 pictures, classified into follow - ing categories OK and NOK consisting of: recoater streaking, recoater hopping, super-elevation. The strength of the algorithm developed lies in its utilization of variations in shades of gray, rather than solely relying on the actual gray values. This approach grants the algorithm a certain degree of adaptability to changing lighting conditions.","PeriodicalId":46357,"journal":{"name":"Advances in Science and Technology-Research Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135619157","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

Investigate the Metallurgical, Degradation Behavior, and Mechanical Characteristics of a Novel Magnesium Alloy 研究一种新型镁合金的冶金、降解行为和力学特性

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/172749

Baraa H. Al Khaqani, Nawal Mohammed Dawood

{"title":"Investigate the Metallurgical, Degradation Behavior, and Mechanical Characteristics of a Novel Magnesium Alloy","authors":"Baraa H. Al Khaqani, Nawal Mohammed Dawood","doi":"10.12913/22998624/172749","DOIUrl":"https://doi.org/10.12913/22998624/172749","url":null,"abstract":"Today, the use of magnesium alloys in medical applications as a decomposing material is extensive, so a new mag - nesium alloy Mg-2Al-1Nd was prepared by an investment-casting method in a medium protected from atmospheric oxygen. One of the rare elements, Nd, was added to improve the microstructural and mechanical properties and corrosion resistance in simulated blood plasma media. The XRF test determined the chemical characterization ele - ments, the SEM test was used to identify the distribution of phases and their shape inside the base before and after heat treatment, and the XRD test was conducted to determine the type of phases that formed and the effect of these phases on other properties was studied. Also, hardness was measured using Vickers microhardness, in which the improvement rate was 75%, and a compression test to determine the mechanical properties of the prepared alloy found that the modulus of elasticity was 42 GPa. To study its corrosive behavior inside the human body, a test was conducted on corrosion by the Tafel method to measure corrosion resistance in simulated blood plasma solution, Where the value of the corrosion rate of the alloy after the heat treatment became 0.089 mm/y and Rp equal 4.13 kΩ/cm 2 , These results made the new magnesium alloy a good candidate for use in temporary medical applications.","PeriodicalId":46357,"journal":{"name":"Advances in Science and Technology-Research Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135619167","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 Vibratory Shot Peening on the Geometric Structure of the Surface of Elements Machined by Laser and Abrasive Water Jet Cutting 振动喷丸强化对激光和磨料水射流加工零件表面几何结构的影响

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/170970

Agnieszka Skoczylas

{"title":"The Effect of Vibratory Shot Peening on the Geometric Structure of the Surface of Elements Machined by Laser and Abrasive Water Jet Cutting","authors":"Agnieszka Skoczylas","doi":"10.12913/22998624/170970","DOIUrl":"https://doi.org/10.12913/22998624/170970","url":null,"abstract":"Elements machined by laser and abrasive water jet cutting sometimes require the use of a finishing treatment. One of the finishing methods for machined elements is vibratory shot peening (VSP). This paper presents the influence of VSP technological conditions on the surface topography and surface roughness (parameters Ra and Rsk) of aluminium alloy AW-7075 samples. Experiments were carried out according to the following plan: first, vibratory shot peening (VSP) was conducted using balls with a diameter d = 3 mm, 6 mm and 9 mm. Then, the surfaces of the samples after VSP (treated with 6 mm diameter balls) were subjected to re-vibratory shot peening (RVSP). As a result of vibratory shot peening, the Ra parameter of the specimens after laser cutting decreased by 71% to 91%, while for the AWJ-treated elements it decreased by 56% to 85%. The additional operation decreased the Ra parameter in the entry zone by 4% to 6% for the samples after laser cutting and by 5% to 7% for the samples after AWJ, when compared to the Ra value after single vibratory shot peening conducted using balls with d=6 mm. After VSP and RVSP, the surface topography of the samples changed. Vibratory shot peening led to the creation of “stria - tions” on the shot-peened surface that could not be completely removed. The re-vibratory shot peening operation (for specific conditions) had a positive effect on the geometric structure of the surface of the elements after cutting. Both VSP and RVSP caused reduction in the analysed 3D surface roughness parameters.","PeriodicalId":46357,"journal":{"name":"Advances in Science and Technology-Research Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135619355","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

Dual Attention Graph Convolutional Neural Network to Support Mocap Data Animation 支持动作捕捉数据动画的双注意图卷积神经网络

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/171592

Maria Skublewska-Paszkowska, Paweł Powroźnik, Marcin Barszcz, Krzysztof Dziedzic

引用次数: 0

Numerical Study of the Energy Absorption Performance of 3D Printed Sandwich Structures 三维打印夹层结构吸能性能的数值研究

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/171496

Quirino Estrada, Jarosław Zubrzycki, Elva Reynoso-Jardón, Dariusz Szwedowicz, Alejandro Rodriguez-Mendez, Magdalena Marchewka, Julio Vergara-Vazquez, Aztlán Bastarrachea, Jesús Silva

{"title":"Numerical Study of the Energy Absorption Performance of 3D Printed Sandwich Structures","authors":"Quirino Estrada, Jarosław Zubrzycki, Elva Reynoso-Jardón, Dariusz Szwedowicz, Alejandro Rodriguez-Mendez, Magdalena Marchewka, Julio Vergara-Vazquez, Aztlán Bastarrachea, Jesús Silva","doi":"10.12913/22998624/171496","DOIUrl":"https://doi.org/10.12913/22998624/171496","url":null,"abstract":"Nowadays, Fused Deposition Modeling (FDM) is a powerful tool for manufacturing complex components, due to its customizability, low cost, accessibility, and fast prototyping time. It is an alternative for creating thin-walled structures, as it allows for novel designs. This article focuses on the design and numerical evaluation of 3D printed sandwich structures for energy absorption applications. For this purpose, five structures of Acrylonitrile Butadiene Styrene (ABS) were designed. To ensure optimal performance, the 3D printing parameters were optimized based on the corresponding literature. The structures had cores based on polygonal and cell arrangements. The effects of cross-section and mass on energy absorption were analyzed, and parameters such as energy absorption, peak load, mean force, and crush force efficiency (CFE) were determined during the study. The structures were assessed by out-of-plane compression tests. The numerical analysis was executed using Abaqus finite element software. Re - sults showed that the energy absorption performance is primarily determined by the geometry and density of the structures. The best performance was found for a circular cellular structure, with a CFE of 0.884.","PeriodicalId":46357,"journal":{"name":"Advances in Science and Technology-Research Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135619147","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 Study of the Effect of the Trailing-Edge Devices (Gurney Flap and Divergent Trailing-edge Flap) on the Aerodynamic Characteristics of an Airfoil in Transonic Flow for Drone Applications 无人机跨声速流中尾缘装置(轮状襟翼和发散型尾缘襟翼)对翼型气动特性影响的数值研究

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/172565

Malgorzata Kmiotek, Adrian Kordos, Adam Piszczatowski, Adam Zaremba

引用次数: 0

Investigation of Multi-Cold Rolling Passes on Mechanical Characteristics and Surface Quality of AlCuV Alloy 多道冷轧对AlCuV合金力学特性和表面质量的影响

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/171265

Nabeel Abu Shaban, Safwan M Al-Qawabah, Hashem S. Alkhaldi

引用次数: 0

Implementation of Type-2 Fuzzy Controller in Matlab Software 二类模糊控制器在Matlab软件中的实现

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/171810

Ireneusz Dominik, Stanisław Flaga

{"title":"Implementation of Type-2 Fuzzy Controller in Matlab Software","authors":"Ireneusz Dominik, Stanisław Flaga","doi":"10.12913/22998624/171810","DOIUrl":"https://doi.org/10.12913/22998624/171810","url":null,"abstract":"The purpose of this work is to create a Matlab toolbox that makes it easy and accessible to become acquainted with a novel control method called type-2 fuzzy controller. A toolbox for working with type-1 controllers can be found in the Simulink package, while there are only few, simple toolboxes for type-2 fuzzy controllers. The article describes the details of the created software, which allows working both with simulation objects, but also enables creating program code for a PLC industrial controller. This gives the opportunity to work in a simulation environment with a model of the control object and then, after tuning the controller, to automatically implement the controller to control the real object. In the literature, one can find many methods for reducing type-2 to type-1 fuzzy logic, but most often they are compared to several well-known classical reduction methods, such as the KM algorithm. There is no compilation of the most popular methods and a comparison of their performance. With the new toolbox it was possible to quickly create and add new reduction methods; thus, an analysis of 16 reduction methods was also presented in the article.","PeriodicalId":46357,"journal":{"name":"Advances in Science and Technology-Research Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135619352","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

Using Fuzzy Logic to Make Decisions Based on Data From CRM Systems 基于CRM系统数据的模糊逻辑决策

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/172374

Agnieszka Barbara Bojanowska, Monika Kulisz

引用次数: 0

Multi-Variant Analysis of the Cross Wedge Rolling Process for Producing Railcar Axles 轨道车辆车轴楔横轧工艺的多变量分析

Advances in Science and Technology-Research Journal Pub Date : 2023-10-20 DOI: 10.12913/22998624/172406

Zbigniew Pater, Janusz Tomczak, Tomasz Adam Bulzak

引用次数: 0