MATEC Web of Conferences最新文献

Classification of intracranial hemorrhage (CT) images using CNN-LSTM method and image-based GLCM features 使用 CNN-LSTM 方法和基于图像的 GLCM 特征对颅内出血（CT）图像进行分类

MATEC Web of Conferences Pub Date : 2024-05-04 DOI: 10.1051/matecconf/202439201075

Swetha Mucha, A. Ramesh Babu

引用次数: 0

Numerical Analysis on Shock of Double-layer Plate with Foamed Aluminum 泡沫铝双层板的冲击数值分析

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202338001007

Peng Wang, W. Huang, Zhao Li, Hao Zhang

引用次数: 0

Time Response and Natural Frequency Analysis for Structures with Interval Parameters 含区间参数结构时响应及固有频率分析

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202338201024

Xingxing Feng, Chang Cao, Min Liu

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Aerodynamic Shape Optimization of a NACA0018 Airfoil Using Adjoint Method and Gradient-Based Optimizer 基于伴随法和梯度优化器的NACA0018翼型气动外形优化

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337701016

Gavin Scott Manggai van Stratan, Sukanta Roy, Y. San

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Determination of the impact of strain rate on dynamic recrystallization of hot-deformed 2205 duplex stainless steel 应变速率对热变形2205双相不锈钢动态再结晶影响的测定

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337402001

A. D. Baruwa, E. Gonya, M. Makhatha

{"title":"Determination of the impact of strain rate on dynamic recrystallization of hot-deformed 2205 duplex stainless steel","authors":"A. D. Baruwa, E. Gonya, M. Makhatha","doi":"10.1051/matecconf/202337402001","DOIUrl":"https://doi.org/10.1051/matecconf/202337402001","url":null,"abstract":"2205 duplex stainless steel suffers poor hot workability, especially whe1981hot-deformed. This investigation aims to determine the strain rate’s effect on the material’s dynamic recrystallization after heat treatment. Secondly, to ascertain the critical strain at which the recrystallization occurs. The as-rolled material was subjected to heat treatment at 1340 °C for some time. After heat treatment, the yielded equiaxed austenite morphology was used for this investigation. Gleeble 1500™ thermo-mechanical was used as a simulant in uniaxial compression mode. The deformation temperature was set at 850 °C, with maximum strain at 0.8 and carried out at 0.001 s-1, 0.01 s-1, 0.1 s-1, 1 s-1, 5 s-1 strain rates. The microstructure of before and after heat-treatment was evaluated using a light microscope, while the critical factors (stress and strain) were determined through the stress-strain curve. It was observed that the lowest strain rate generated the maximum critical stress and critical strain at 191.99 MPa and 0.08283, respectively. However, at the highest strain rate, the maximum critical stress and critical strain experienced by the material were at 336.32 MPa and 0.17577. Overall, it was established that the applied stain rate influenced the critical strain and stress of the material. It can be concluded that dynamic recrystallization can occur at any strain rate, but the applied stress determines the extent of the phenomenon.","PeriodicalId":18309,"journal":{"name":"MATEC Web of Conferences","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85660044","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

Research on the Development of Sensor Tracking Technology under the Guidance of Artificial Intelligence 人工智能指导下传感器跟踪技术发展研究

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202338201006

Shanshan Ge

引用次数: 0

Modeling transient transport through a fixed bed: Comparative study of phenomenological models with and without hydrodynamic dispersion 通过固定床的瞬态输运建模:有和没有流体动力色散的现象学模型的比较研究

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337902004

N. Benaouag, M. Sardin, R. Rihani

{"title":"Modeling transient transport through a fixed bed: Comparative study of phenomenological models with and without hydrodynamic dispersion","authors":"N. Benaouag, M. Sardin, R. Rihani","doi":"10.1051/matecconf/202337902004","DOIUrl":"https://doi.org/10.1051/matecconf/202337902004","url":null,"abstract":"Numerous publications on the transport of pollutants in a fixed bed, in particular in the treatment of waters still use two-parameter models: a capacity parameter measuring the delay of the breakthrough curve (CP) and a transfer kinetics parameter to translate the dispersion observed (Thomas model and Yoon-Nelson model), The authors totally neglect the role of the hydrodynamic dispersion which however largely contributes to the spread of the curves and thus the adjustments made on the analyzed breakthrough curves are invalid, Using three examples involving fixed beds of homogeneous adsorbent beads or sand, one of Lin et al [2013] with biochar-alginate grains (diameter 2.0 mm), the following from Jang et al. [2018] with resin beads (diameter 0.8 mm), and the last of our own work with a clay-limestone quartz sand of mean diameter 0.4 mm (Benaouag et al., 2018) we analyzed the validity of these models, For this we used as reference model a model with 4 parameters (Mixers in Cascade with Exchange) taking into account hydrodynamic dispersion, linear sharing and first-order mass transfer kinetics.","PeriodicalId":18309,"journal":{"name":"MATEC Web of Conferences","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79511330","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

Analysis of the changes impact in the construction of the vehicle exhaust silencer on the noise emission level 分析了汽车排气消声器结构变化对噪声排放水平的影响

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337501009

Szymon Furgal, T. Kałaczyński, M. Łukasiewicz, R. Martinod

引用次数: 0

Ecodesign of a process for dimethyl carbonate: Influence of the degree of modelling of the methanolysis of urea 碳酸二甲酯工艺的生态设计:尿素甲醇分解模型化程度的影响

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202337907009

Laurent Astruc, C. Vialle, C. Sablayrolles, L. Cassayre, I. Rodríguez-Donis

{"title":"Ecodesign of a process for dimethyl carbonate: Influence of the degree of modelling of the methanolysis of urea","authors":"Laurent Astruc, C. Vialle, C. Sablayrolles, L. Cassayre, I. Rodríguez-Donis","doi":"10.1051/matecconf/202337907009","DOIUrl":"https://doi.org/10.1051/matecconf/202337907009","url":null,"abstract":"The environmental performance of emerging bio-based technologies must be assessed at an early stage of their development, when the process can still be modified for sustainable optimization, i.e. including environmental, social and economic aspects. The Life Cycle Analysis (LCA) methodology is already recognized as an effective solution for environmental analysis. However, the data obtained at the laboratory scale are incomplete in the initial stage of the eco-design of a new synthesis route, which complicates the inventory of the life cycle. Coupling a process modelling/simulation tool with LCA has proven to be an effective solution for providing inventory data. The simulation of a process is based on the selection of models allowing the environmental, energy and economic optimization of a technology to be developed on the production scale. The choice of models for the reaction and separation steps will certainly have a significant impact on the results of the environmental assessment. This article is dedicated to the study of the impact of the degree of complexity of the modelling of the reaction pathway on the environmental assessment of the process of methanolysis of urea to produce dimethyl carbonate (DMC).","PeriodicalId":18309,"journal":{"name":"MATEC Web of Conferences","volume":"157 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86049555","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

Rapid Prototyping and Tooling Technology to Assist the Development of Low-Cost Dies 协助低成本模具开发的快速成型和模具技术

MATEC Web of Conferences Pub Date : 2023-01-01 DOI: 10.1051/matecconf/202338101002

Muhammad Shehbaz, Muhammad Sajid, W. Ahmad, S. Hussain, M. Jahanzaib

{"title":"Rapid Prototyping and Tooling Technology to Assist the Development of Low-Cost Dies","authors":"Muhammad Shehbaz, Muhammad Sajid, W. Ahmad, S. Hussain, M. Jahanzaib","doi":"10.1051/matecconf/202338101002","DOIUrl":"https://doi.org/10.1051/matecconf/202338101002","url":null,"abstract":"This case study aims toward the importance of the application of rapid prototyping and tooling technology in die design and manufacturing. Many conventional machining processes of die manufacturing, including computer numeric control (CNC) machining and electric discharge machining (EDM), are used by the local manufacturers of die, but these processes are time-consuming and expensive. There is a need to explore opportunities to reduce die manufacturing costs. This paper aims to assist the development of low-cost dies through the application of rapid prototyping and tooling technology. For this purpose, solid works software was used to design the die of a 4-hole Lego Block. 3D printing was incorporated in the existing capability of investment casting process for die manufacturing. A proper gating system design consideration was taken into account to ensure the accurate flow of casting material for achieving fine surface finish. From the results, it has been observed that gating system design with four ingates gives the optimum value of surface finish (~3.4156μm). The proposed rapid prototyping and tooling technology makes the practitioners (tool makers) capable of making dies with complex shapes, superior surface finishes, and dimensional accuracy in less or no time.","PeriodicalId":18309,"journal":{"name":"MATEC Web of Conferences","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78059712","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