Archives of materials science and engineering最新文献_第8页

Durability and Microstructural Behavior of Nano Silica-Marble Dust Concrete 纳米二氧化硅-大理石粉尘混凝土的耐久性和微观结构性能

Archives of materials science and engineering Pub Date : 2022-03-01 DOI: 10.5604/01.3001.0015.7023

V. Kashyap

引用次数: 4

Characteristics of polymer ring springs 聚合物环形弹簧的特性

Archives of materials science and engineering Pub Date : 2022-03-01 DOI: 10.5604/01.3001.0015.9848

G. Wróbel

{"title":"Characteristics of polymer ring springs","authors":"G. Wróbel","doi":"10.5604/01.3001.0015.9848","DOIUrl":"https://doi.org/10.5604/01.3001.0015.9848","url":null,"abstract":"Purpose: The paper discusses selected aspects of the use of polymeric materials in the construction of ring springs.\u0000\u0000Design/methodology/approach: Special attention is paid to differences in characteristics of such materials in comparison to springs made of traditional material - steel.\u0000\u0000Findings: The result of the work is a static-dynamic model of polymer ring springs. An analysis of the influence of friction on the performance characteristics was carried out. The results of the preliminary experimental studies confirm the correctness of the model.\u0000\u0000Practical implications: Analytical models have been developed, as tools to support the design processes of ring spring structures, in the field of innovative material solutions. They are a tool for the selection of geometric and material characteristics of springs, meeting the set operational expectations.\u0000\u0000Originality/value: Extensive possibilities in the selection among a group of structural polymer materials allow the formation of structural solutions with a variety of characteristics, both elastic and impact or damping. The area of application ranges from mechanical engineering to construction or transportation. The characteristics complement the possible field of solutions in cases of use of traditional metallic materials, especially high-grade steels. Material solutions make it possible to achieve significant economic effects in addition to unavailable performance characteristics, both static and dynamic. These are due to competitive prices for polymer materials, including composites, and manufacturing costs. They open up a wide field for utility innovations.\u0000\u0000","PeriodicalId":8297,"journal":{"name":"Archives of materials science and engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41922130","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

Determination of conditions for loss of bearing capacity of underground ammonia pipelines based on the monitoring data and flexible search algorithms 基于监测数据和灵活搜索算法的地下氨管道承载力损失条件的确定

Archives of materials science and engineering Pub Date : 2022-02-01 DOI: 10.5604/01.3001.0015.7018

R. Mysiuk

引用次数: 6

Evaluation Of Stress-Strain State Of Vehicles’ Metal Structures Elements 汽车金属结构元件应力应变状态的评估

Archives of materials science and engineering Pub Date : 2022-02-01 DOI: 10.5604/01.3001.0015.7017

O. Hrevtsev

引用次数: 0

Deposition Tantalum Nitride on LDX 2101 Duplex Stainless Steel by Reactive Sputtering in Biomedical Applications 反应溅射在LDX 2101双相不锈钢上沉积氮化钽在生物医学上的应用

Archives of materials science and engineering Pub Date : 2022-02-01 DOI: 10.5604/01.3001.0015.7019

J. Al-Murshdy

引用次数: 1

DNN and XGBoost for modelling of strength of porous concrete with recycled aggregates DNN和XGBoost用于模拟多孔混凝土的强度与再生骨料

Archives of materials science and engineering Pub Date : 2022-02-01 DOI: 10.5604/01.3001.0015.7016

S. Aggarwal

引用次数: 1

Construction of conical axoids on the basis of congruent spherical ellipses 基于全等球面椭圆的圆锥轴的构造

Archives of materials science and engineering Pub Date : 2022-01-01 DOI: 10.5604/01.3001.0015.6967

T. Kresan, S. Pylypaka, Z. Ruzhylo, C. Rogovskii, O. Trokhaniak

{"title":"Construction of conical axoids on the basis of congruent spherical ellipses","authors":"T. Kresan, S. Pylypaka, Z. Ruzhylo, C. Rogovskii, O. Trokhaniak","doi":"10.5604/01.3001.0015.6967","DOIUrl":"https://doi.org/10.5604/01.3001.0015.6967","url":null,"abstract":"Purpose: To carry out the transition from a cylindrical gear in which the centroids are congruent ellipses with centres of rotation in the foci, to a bevel gear on the basic of congruent spherical ellipses.\u0000\u0000Design/methodology/approach: Congruent ellipses with centres of rotation in the foci serve as centroids for the design of cylindrical gears with non-circular wheels. The article analytically shows that the analogues of ellipses on the plane - congruent spherical ellipses are the basis for the construction of the axoids of the corresponding bevel gears. An analogue of the centre-to-centre distance for ellipses in the plane is the angle between the axes of rotation of conical axoids.\u0000\u0000Findings: Based on the equality of the arcs of ellipses, the dependence of the angle of rotation of one axoid on the angle of rotation of another is found. Graphs of this dependence for separate cases are given. It is shown under what conditions the axes of axoids intersect at right angle. The parametric equations of spherical ellipses and corresponding axoids are given. They were used to construct spherical ellipses and corresponding conical axoids for different cases. For gears with right angle between the axes, separate positions of the axoids with different angles of their rotation around their axes are constructed.\u0000\u0000Practical implications: Spherical ellipses are directing curves for the construction of the corresponding conical axoids.\u0000\u0000Originality/value: The paper shows that congruent spherical ellipses act as centroids for the design of axoids of bevel gears. They roll one by one without sliding, rotating around axes that intersect in the centre of the sphere. To design such gears, it is important to know the interdependence between the geometric parameters, especially for common gears with a right angle between the axes.\u0000\u0000","PeriodicalId":8297,"journal":{"name":"Archives of materials science and engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44769017","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: 1

Sustainable deployment of crushed concrete aggregates strengthened with cement and sand 用水泥和沙子加固的碎混凝土骨料的可持续部署

Archives of materials science and engineering Pub Date : 2022-01-01 DOI: 10.5604/01.3001.0015.6970

V. Sharma, A. Kumar, A. Kaur

{"title":"Sustainable deployment of crushed concrete aggregates strengthened with cement and sand","authors":"V. Sharma, A. Kumar, A. Kaur","doi":"10.5604/01.3001.0015.6970","DOIUrl":"https://doi.org/10.5604/01.3001.0015.6970","url":null,"abstract":"Purpose: Paper assessed the feasibility of crushed concrete aggregates (CCA), a subsidiary of construction and demolition (C&D) waste, blended with cement and sand to form a composite for civil engineering field applications.\u0000\u0000Design/methodology/approach: The compaction and strength characteristics of CCA were observed by conducting Proctor compaction and California Bearing Ratio (CBR) tests. Different proportions of CCA, sand and cement were used. Moreover, the effect of curing period (0, 4, 7, 14 and 28 days) was also studied. In addition, regression analyses were performed to develop empirical expressions to predict the compaction and strength characteristics of the CCA composite.\u0000\u0000Findings: Increasing the CCA content up to 50% increases the maximum dry unit weight (MDUW) and decreases the optimum moisture content (OMC). However, on further increasing its content the MDUW decreases and OMC increases. Percent increase in the CBR value can go up to 412% if the CCA content is increased up to 50%. However, the percent reduction in CBR of about 20% can take place if 100% CCA content is used. Moreover, multiple regression shows that the experimental results are in good agreement with the predicted values.\u0000\u0000Research limitations/implications: The results obtained are purely dependent on the type of material. However, they are in favour of the used material as a probable option for road sub-base layer, and also for reducing burden on available natural resources. Therefore, it is recommended to conduct some initial tests to confirm the feasibility of the material.\u0000\u0000Practical implications: The proposed study will guide the design Engineers to choose CCA as one of the potential materials for road construction.\u0000\u0000Originality/value: It was observed that there is a need to maximize the utilization of C&D waste without making any compromise with its mechanical properties. So keeping that in view, the present study was conducted.\u0000\u0000","PeriodicalId":8297,"journal":{"name":"Archives of materials science and engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42198054","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: 1

Estimation of strength properties of functionally graded structures with elliptical stress concentrators 椭圆应力集中器功能梯度结构强度特性的估计

Archives of materials science and engineering Pub Date : 2022-01-01 DOI: 10.5604/01.3001.0015.6973

Z. Stotsko, O. Kuzin, M. Kuzin, V. Mechnik

{"title":"Estimation of strength properties of functionally graded structures with elliptical stress concentrators","authors":"Z. Stotsko, O. Kuzin, M. Kuzin, V. Mechnik","doi":"10.5604/01.3001.0015.6973","DOIUrl":"https://doi.org/10.5604/01.3001.0015.6973","url":null,"abstract":"Purpose: The purpose of this paper is to elaborate new calculation schemes for evaluating the strength parameters of railway rolling stock parts with non-local properties of surface layers in the presence of elliptical stress concentrators.\u0000\u0000Design/methodology/approach: Using the proposed approaches of developed mathematical modelling and open software for calculating FEniCS, it were established the most dangerous angles of stress concentrator orientation and the required thickness of the hardened zones of parts, which ensures their minimum softening during operation.\u0000\u0000Findings: It is shown that for an elliptical stress concentrator with any orientation angle, there is a certain key size of surface hardening thickness, the exceeding the value of which does not have influence on the operational strength of the parts, but rise the price of technological operations.\u0000\u0000Research limitations/implications: In this paper proposes a method for computation the impact of the orientation of the surface elliptical stress concentrators on the contact strength of parts under conditions of dominate friction power loads.\u0000\u0000Practical implications: The obtained results were used to set the modes of plasma hardening, which increase the contact strength of railway parts with elliptical stress concentrators.\u0000\u0000Originality/value: Using the approaches of contact mechanics, mathematical and computer modelling, methods of controlling the contact strength of the parts with the surface elliptical stress concentrators were proposed for the first time.\u0000\u0000","PeriodicalId":8297,"journal":{"name":"Archives of materials science and engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45652133","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: 3

SUPERPAVE design mixture performance evaluation using Epolene modifier for cold semi-arid climatic region of Saudi Arabia 使用Epolene改性剂对沙特阿拉伯寒冷半干旱气候区的SUPERPAVE设计混合料性能评估

Archives of materials science and engineering Pub Date : 2021-12-01 DOI: 10.5604/01.3001.0015.6285

M. Dahim, M. Mosaby, R. El Morabet, R. A. Khan, S. AlQadhi, N. Khan, N. Ben Kahla, I. Neklonskyi, L. Borysova

{"title":"SUPERPAVE design mixture performance evaluation using Epolene modifier for cold semi-arid climatic region of Saudi Arabia","authors":"M. Dahim, M. Mosaby, R. El Morabet, R. A. Khan, S. AlQadhi, N. Khan, N. Ben Kahla, I. Neklonskyi, L. Borysova","doi":"10.5604/01.3001.0015.6285","DOIUrl":"https://doi.org/10.5604/01.3001.0015.6285","url":null,"abstract":"Purpose: To evaluate the superpave design performance using Epolene (EE-2) as modifier, since SUPERPAVE design is a modified and sophisticated aspect as compared to previous mix design for asphalt mixtures. This is primarily due to the fact that superpave design mix also takes into consideration properties of materials beside asphalt.\u0000Design/methodology/approach: This study was conducted using Epolene (EE-2) as modifier in order to evaluate the performance of SUPERPAVE suitability for construction of roads in Alfaraa campus (King Khalid University) Abha, in Asir Province of Saudi Arabia. Glow number test, dynamic modulus test and indirect tensile strength test were conducted to evaluate the performance of EE-2 modifier against the control mixture.\u0000Findings: The mixture modified with EE-2 gave better performance in terms of temperature-based performance and resistance to moisture damage. Also, larger values of E*/sinφ were obtained for EE-2 modified mixture at various loading frequencies and temperature in comparison to control mixture.\u0000Research limitations/implications: The Epolene modifier successfully enhances and improves the SUPERPAVE mixture performance. Further studies are required to evaluate the performance of EE-2 modifier at much lower temperature ranges.\u0000Practical implications: The results of the study allow us to recommend the investigated asphalt mixture for applied for the construction of roads in the Alfaraa (new campus of King Khalid University), Abha, Asir province, Saudi Arabia.\u0000Originality/value: A modified asphalt mixture has been proposed that has better performance at higher and lower temperatures. The developed asphalt mixture is more resistant to moisture damage than the compared to control mixture.\u0000\u0000","PeriodicalId":8297,"journal":{"name":"Archives of materials science and engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48362428","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