Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials最新文献_第6页

A Three-Node Triangular Constant Strain Element for Evaluation of Stress Concentration Factor of a Rectangular Thin Plate Under Tension Load 矩形薄板拉载应力集中系数的三节点三角形恒应变单元

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-10-31 DOI: 10.18280/rcma.320503

Amara Fethallah, Samir Deghboudj

{"title":"A Three-Node Triangular Constant Strain Element for Evaluation of Stress Concentration Factor of a Rectangular Thin Plate Under Tension Load","authors":"Amara Fethallah, Samir Deghboudj","doi":"10.18280/rcma.320503","DOIUrl":"https://doi.org/10.18280/rcma.320503","url":null,"abstract":"In many engineering fields such as aerospace, marine, automotive and mechanical, the design of planar structures consisting of rectangular plates commonly requires the use of holes as a technological solution in fastening assemblies. The major goal of this research is to examine the impact of stress concentration factors (SCF) in the specific case of planar structures, highlight their relevance as a potential source of structural failure, and compare the various techniques employed to gauge their magnitude. Particular emphasis will be placed on rectangular plates with holes since these plates' shape discontinuities alter the stress field, leading to a local increase in the stress field that, if not accurately predicted and analyzed at the design stage, could endanger the entire structure. For the studied case (rectangular plate with central hole subjected to uniform tensile field), a new finite element formulation based on 3-noded triangular element has been suggested to estimate the field variables (stress). MATLAB programming has been developed by considering this element. Analysis has been carried out for the same structure (rectangular plate) with analysis software Abaqus. Finding was compared to several analytical solutions published in the literature, based on Heywood, Howland, and Flynn formulations. Obtained results were in good agreement.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48794588","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

Preparation of an Aluminum Titania /Mullite Composite from the Raw Materials Alumina, Titania and Silica Fume 以氧化铝、二氧化钛和硅灰为原料制备铝-二氧化钛/莫来石复合材料

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-10-31 DOI: 10.18280/rcma.320502

A. Mohammed, E. Kurovics, J. F. Ibrahim, M. Tihtih, Andrea Simon, R. Géber

引用次数: 1

Experimental Investigation of Mechanical Behaviour and Damage of Bio-Sourced Sandwich Structures Based on Date Palm Tree Waste and Cork Materials 基于椰枣树废弃物和软木材料的生物源夹层结构力学性能和损伤的实验研究

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-10-31 DOI: 10.18280/rcma.320501

H. Djemai, T. Djoudi, A. Labed

引用次数: 2

Analysis of Dielectric Properties of PVA/PEG/In2O3 Nanostructures for Electronics Devices 电子器件用PVA/PEG/In2O3纳米结构的介电性能分析

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-10-31 DOI: 10.18280/rcma.320507

N. Hayder, A. Hashim, M. Habeeb, B. Rabee, A. Hadi, M. K. Mohammed

引用次数: 1

Effect of Spindle Speed on Microstructure and Flexural Strength of Dental Direct Bio Zirconia 主轴转速对牙科直接生物氧化锆微观结构和抗弯强度的影响

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-10-31 DOI: 10.18280/rcma.320504

I. Abed

{"title":"Effect of Spindle Speed on Microstructure and Flexural Strength of Dental Direct Bio Zirconia","authors":"I. Abed","doi":"10.18280/rcma.320504","DOIUrl":"https://doi.org/10.18280/rcma.320504","url":null,"abstract":"Dental direct block are dental mill blanks made from Yttrium stabilised, presintered and zirconium oxide blanks for the manufacture of dental prostheses. Dental direct presintered blocks with disk-shapede were used to machining the specimens at different rotational speed (10000,20000,40000) r.p.m by After that, the specimens were put through a uniaxial flexure test using balls and loaded in a universal testing machine at a cross-head speed of 0.5 mm/min until they failed. Computer Numerical Control machine (CNC) then sintered at 1600℃. The rotating speed affected the flexural strength, microstructure, crystal phase, and grain size of the studied zirconia. The characterization of samples were conducted using field emission scanning electron microscopy (FESEM) and analyzed with X-ray diffraction (XRD). The results XRD analysis showed the presence of a tetragonal phase in all rotational speeds. The differences in morphology and grain size due to different in rotational speed and grain size increase with increasing the rotational speed about 36%. The best flexural strength was observed at low speed, while Hardness showed little varation (decreasing10%) with increasing rotational speed.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49662096","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

A Multi-Scale Homogenization Procedure for the Estimation of Young’s Modulus of Porous Materials by a Multi-Void Shape Model 多孔材料杨氏模量的多尺度均匀化计算方法

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-08-31 DOI: 10.18280/rcma.320401

M. Masmoudi, W. Kaddouri, K. Bourih, Abdellah Bourih, S. Madani

{"title":"A Multi-Scale Homogenization Procedure for the Estimation of Young’s Modulus of Porous Materials by a Multi-Void Shape Model","authors":"M. Masmoudi, W. Kaddouri, K. Bourih, Abdellah Bourih, S. Madani","doi":"10.18280/rcma.320401","DOIUrl":"https://doi.org/10.18280/rcma.320401","url":null,"abstract":"Transversal cross-section pores of lotus-type porous materials are generally considered circular; however, they exhibit various pore geometries, which affect their effective properties. The main objective of this work is to develop a generalized model which allows estimating the effective Young’s modulus of multi-void shape porous microstructures by exploiting a relationship developed to evaluate the effective Young’s modulus of porous materials with single-void shape. A procedure based on free software is then proposed to allow the application of the proposed generalized model on real lotus-type porous material images to estimate the effective Young’s modulus. The free tool allows the processing of real porous materials images to obtain multi-void shape microstructures and their pores parameters data. The validation of the generalized model has been established by confronting the obtained results with experimental data taken from literature; an excellent agreement was observed. Therefore, it can be concluded that the proposed procedure associated with the generalized model can be used efficiently for predicting the effective Young’s modulus of the multi-void porous materials, particularly lotus-type porous materials.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46228528","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 the Effect of Waste Materials on the Properties of the Composite Polymer Prosthetics Limbs 废弃材料对复合材料假肢性能影响的研究

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-08-31 DOI: 10.18280/rcma.320404

R. A. Mohammed, M. Attallah, Aseel B. Al-Zubidi, Layth Al-Gebory

{"title":"Investigation of the Effect of Waste Materials on the Properties of the Composite Polymer Prosthetics Limbs","authors":"R. A. Mohammed, M. Attallah, Aseel B. Al-Zubidi, Layth Al-Gebory","doi":"10.18280/rcma.320404","DOIUrl":"https://doi.org/10.18280/rcma.320404","url":null,"abstract":"Nowadays, the trend to benefit from environmentally friendly waste and recycle it instead of incineration processes that can cause pollution in the environment to have a clean and green environment that is free from pollution and can work for a long time without consumption and damage. This study is designed to manufacture prosthetics limbs from PMMA (polymethyl methacrylate) reinforced with different weight percentages of waste paper layers (0%, 3%, 6%, 9%, and 12%) by the “hand lay” method. The tensile, flexural, impact, compression, and hardness of these composites are tested before and after adding weight percentages waste paper layers to determine the mechanical properties behavior. The average values of all the samples are collected and analyzed by one-way analysis of variance (ANOVA) to interpret the results. When discussing the results of mechanical tests, it is found that the addition (12%-waste paper layers) to (PMMA) increased the average values (tensile, flexural, impact, compression, and hardness) by 142.1%, 532.3%, 146%, 99.2%, and 6.37%; respectively, compared to the mean values of other samples. It is clear from this work there is an improvement in the properties of PMMA after strengthening with waste paper layers.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44250826","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

Mechanical and Morphological Investigation of Aluminium 7075 Reinforced with Nano Graphene / Aluminium Oxide / Inconel Alloy 625 Using Ultrasonic Stir Casting Method 超声搅拌铸造纳米石墨烯/氧化铝/铬镍铁合金625增强7075铝的力学和形态研究

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-08-31 DOI: 10.18280/rcma.320403

Thayumanavan Mahenran, Vijaya Kumar Kutty Nadar Rajammal

引用次数: 0

Green Synthesis and Characterization of Silver Nanoparticles / CM-Chitosan-Isopropanol by Gamma Irradiations Method γ辐照法制备纳米银/CM壳聚糖-异丙醇的绿色合成与表征

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-08-31 DOI: 10.18280/rcma.320402

S. J. Beden, A. A. Ati, Kifah A. Fayadh Alimarah, Suhailah K Saihood, Rana K. Abdulnabi, M. Mejbel

{"title":"Green Synthesis and Characterization of Silver Nanoparticles / CM-Chitosan-Isopropanol by Gamma Irradiations Method","authors":"S. J. Beden, A. A. Ati, Kifah A. Fayadh Alimarah, Suhailah K Saihood, Rana K. Abdulnabi, M. Mejbel","doi":"10.18280/rcma.320402","DOIUrl":"https://doi.org/10.18280/rcma.320402","url":null,"abstract":"The present study demonstrates a green process for the synthesis of spherical-shaped and stabilized silver nanoparticles Ag NPs using gamma irradiated conditions. This method has certain advantages over conventional methods since it can manage the particle size and structure and generates totally reduced and extremely pure nanoparticles free from by-products or chemical reducing agents. Silver nanoparticles composite (Ag NPs / CM) is prepared from an aqueous solution of silver nitrate, chitosan and isopropanol, at room temperature using gamma irradiation doses to induce reduction and cross-linking to formation in situ Ag NPs/ CM-chitosan-isopropanol solutions. The production and homogenous distribution of silver nanoparticles in the hydrogel matrix were characterized using transmission electron microscopy, XRD, Zeta potential and UV-Vis spectrophotometer analysis. The silver/ CM-chitosan-isopropanol matrixes possessed different gamma doses using a Co- 60 gamma source. Through the comprehensive results of IR- Ag NPs /(CM- chitosan isopropanol solutions due to antibacterial activity test, the results show the prepared Ag NPs /CM-chitosan-isopropanol could be used as an antibacterial agent. The obtained Ag nanoparticles were stable for over 3 months at room temperature. the analysis outcomes indicate that the colloidal Solution (silver nanoparticles / (CM chitosan - isopropanol)) has a promising ability to be used in antibacterial applications in the future.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42334235","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: 2

Comparative Analysis on the Effect of Agro-Waste Based Flux During Arc-Welding of Mild-Steel 农用废弃物助焊剂对低碳钢电弧焊效果的对比分析

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Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials Pub Date : 2022-08-31 DOI: 10.18280/rcma.320405

T. Ogedengbe, Omolayo M. Ikumapayi, S. Afolalu, A. I. MUSA-OLOKUTA, T. Adeyi, Marvel O. Omovigho, Japhet B. Nkanga

{"title":"Comparative Analysis on the Effect of Agro-Waste Based Flux During Arc-Welding of Mild-Steel","authors":"T. Ogedengbe, Omolayo M. Ikumapayi, S. Afolalu, A. I. MUSA-OLOKUTA, T. Adeyi, Marvel O. Omovigho, Japhet B. Nkanga","doi":"10.18280/rcma.320405","DOIUrl":"https://doi.org/10.18280/rcma.320405","url":null,"abstract":"This study was a comparative study on the effect of the flux produced from coconut and eggshell powders during arc-welding of mild steel. An arc welding machine and flux prepared from agrowastes were employed for the study. The Flux compositions used for the 5 welded groups include 100% Eggshell, 100% Coconut shell, 70% Eggshell with 30% Coconut shell, 30% Eggshell with 70% Coconut shell and finally, normal convectional flux for control experimentation. Tensile test shows that the 100% egg shell powder as flux had the highest tensile strength with 850 N at maximum tensile compare with 70% Egg shell, normal flux, 30% Coconut shell and 100% Coconut shell that returned values of 847, 785, 750 and 712 N respectively. Samples welded using 100% Eggshell developed flux produced the highest Brinell Hardness Value of 125.25 BHN at the welded joint compared to results from other flux types. Tensile results shows that welded joints formed by 100% Eggshell flux had the highest Maximum Tensile Stress (MTS) of 850.2 N compared with others having lower values of MTS and can last longer when load bearing properties is considered. Hence, flux developed from 100% Eggshell is recommended for use as substitute for the conventional flux.","PeriodicalId":42458,"journal":{"name":"Revue des Composites et des Materiaux Avances-Journal of Composite and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49214113","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: 5