Journal of applied mechanical engineering最新文献_第3页

A Public Health Perspective on Consumer Product Design 消费产品设计的公共健康视角

Journal of applied mechanical engineering Pub Date : 2020-01-01 DOI: 10.35248/2168-9873.20.9.322

James Seifert

引用次数: 0

Improving Impact Toughness for Welding Joints of Steel by Adding TiO2 Nanoparticales 添加纳米TiO2提高钢焊接接头的冲击韧性

Journal of applied mechanical engineering Pub Date : 2020-01-01 DOI: 10.35248/2168-9873.20.9.323

Ali Fakhri Al-Obaid, A. Yasir, S. Thahab

{"title":"Improving Impact Toughness for Welding Joints of Steel by Adding TiO2 Nanoparticales","authors":"Ali Fakhri Al-Obaid, A. Yasir, S. Thahab","doi":"10.35248/2168-9873.20.9.323","DOIUrl":"https://doi.org/10.35248/2168-9873.20.9.323","url":null,"abstract":"The using of nanotechnology in the welding process has great importance in developing the mechanical properties of welding joints for metals. This paper investigated the effect of addition TiO2 NPs to welding joints to improving the Impact toughness property of the welding joints. The cold spray coating method of the nanoparticles are used to adding the TiO2 NPs to the welding joints during the welding process. Three weight fraction are used for TiO2 NPs (0.75%, 1.5%, and 2%). The testing samples were prepared for Impact test, and microstructure by SEM. The results show the increasing in Impact toughness of welded joints with an increase of TiO2 NPs concentrations. The average Impact toughness for the welded sample without TiO2 NPs. was (162.4 J), while the average Impact toughness for the welded sample with (1.5)% TiO2 NPs. was (231.2 J) with improving rate of (42.36%). The Microstructure images by SEM show the adding of TiO2 NPs decreases the grain size and homogenous region in welded joints cross-section compared with a sample without adding TiO2 NPs. The EDS analysis show that increase Ti contain and decrease (Mn and Si) contain with increase TiO2 NPs.","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69997109","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

Design optimization of spot welds for optimal strength of structure 点焊优化设计，优化结构强度

Journal of applied mechanical engineering Pub Date : 2019-02-14 DOI: 10.4172/2168-9873-C2-020

pZaheer Abbas, Nadeem Shafi Khanp

引用次数: 6

Pumps working as turbines as an engineering solution for energy recovering in water distribution systems 水泵作为涡轮机在水分配系统中作为能量回收的工程解决方案

Journal of applied mechanical engineering Pub Date : 2019-02-14 DOI: 10.4172/2168-9873-C2-019

pPetra Amparo Lopez Jimenezp

引用次数: 0

Concrete pavement design 混凝土路面设计

Journal of applied mechanical engineering Pub Date : 2019-02-14 DOI: 10.4172/2168-9873-C2-021

pDagher Imadp

引用次数: 0

The Comparison of Newtonian and Non-Newtonian Rheology Cases of the Solution of 2D Hydrodynamic Equations in the Boussinesq Approximation: A Mechanism of Upwelling Convective Flow Transporting Hydrocarbons 二维流体动力学方程在Boussinesq近似下的牛顿和非牛顿流变解的比较:上升流对流输送碳氢化合物的机制

Journal of applied mechanical engineering Pub Date : 2019-01-01 DOI: 10.35248/2168-9873.19.8.314

A. Kharitonov, S. Gavrilov

{"title":"The Comparison of Newtonian and Non-Newtonian Rheology Cases of the Solution of 2D Hydrodynamic Equations in the Boussinesq Approximation: A Mechanism of Upwelling Convective Flow Transporting Hydrocarbons","authors":"A. Kharitonov, S. Gavrilov","doi":"10.35248/2168-9873.19.8.314","DOIUrl":"https://doi.org/10.35248/2168-9873.19.8.314","url":null,"abstract":"Thermo-mechanical model of the mantle wedge between the base of the overlying Scythian lithospheric plate and the upper surface of the Black Sea micro-plate subducting under the Scythian one with a velocity V at an angle β is obtained for the infinite Prandtl number fluid as a solution of non-dimensional 2D hydrodynamic equations in the Boussinesq approximation. For both Newtonian and non-Newtonian rheology cases 2D thermal viscous dissipationdriven convection mechanism in the mantle wedge above the Black Sea micro-plate subducting under the Crimea peninsula is modelled numerically. The effects of 410 km and 660 km phase transitions are taken into account. In the case of Newtonian rheology, the upwelling convective flow transporting heat to the Earth’s surface locates at far greater distance from the trench than they observed 2D heat flux anomaly. In the case of non-Newtonian rheology, the upwelling convective flow transporting heat to the Earth’s surface locates at twice greater distance from the trench than they observed 2D heat flux anomaly, the velocity in the convective vortices being over ∼10 m per year.","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69996542","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

Influence of POSS-PVP in Modification of CFRP Interlaminar Fracture Toughness POSS-PVP对CFRP层间断裂韧性改性的影响

Journal of applied mechanical engineering Pub Date : 2019-01-01 DOI: 10.35248/2168-9873.19.8.318

Kunal Mishra, L. K. Babu, R. Vaidyanathan

引用次数: 1

Multi-Conceptual Mechanical Design Optimization of Capacitive Pressure Sensors via Finite Element Analysis with use of Anisotropic Behavior of Silicon <111> Crystal: Summary of Design Optimization Approaches 基于硅晶体各向异性特性的电容式压力传感器多概念有限元优化设计方法综述

Journal of applied mechanical engineering Pub Date : 2019-01-01 DOI: 10.35248/2168-9873.19.8.317

A. Javidinejad

{"title":"Multi-Conceptual Mechanical Design Optimization of Capacitive Pressure Sensors via Finite Element Analysis with use of Anisotropic Behavior of Silicon <111> Crystal: Summary of Design Optimization Approaches","authors":"A. Javidinejad","doi":"10.35248/2168-9873.19.8.317","DOIUrl":"https://doi.org/10.35248/2168-9873.19.8.317","url":null,"abstract":"In the world of micro-mechanical design of micro-sensors, up to date, there has not been substantial considerations given to the actual mechanical or structural aspect of the designs. Hence, most of the currently available designs are challenged to linearize the “non-linear” sensor’s output by utilization of electronic circuitry. In this research work, a micro-pressure diaphragm which possess linear pressure-deflection behaviour is designed via FEM optimization techniques. The diaphragm is modelled as a Silicon (111) plane, which possess plane isotropic properties. A circular centre boss section is added to the diaphragm and optimization is carried out, to achieve an optimum diaphragm geometry that would allow for flat or rigid deflection of this boss section under the applied surface pressure loading. The approximate closed−form deflection solutions are developed using the anisotropic thin plate theory and the diaphragm deflection behaviour of the FEM optimized design is compared with this thin plate theory model. This diaphragm design is proposed to be used as the top electrode plate of a capacitive pressure sensor, where linear pressure-capacitance change behaviour would become present. This pressure diaphragm has a pressure range of 0 to 206843 Pa (30 psi) with a pressure resolution of 689.5 Pa (0.1 psi).","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69996732","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 Torsional Stiffness of the Frame of a Formula Student Vehicle 某学生方程式赛车车架抗扭刚度分析

Journal of applied mechanical engineering Pub Date : 2019-01-01 DOI: 10.35248/2168-9873.19.8.315

David Krzikalla, J. Měsíček, J. Petrů, A. Slíva, Jakub Smiraus

{"title":"Analysis of Torsional Stiffness of the Frame of a Formula Student Vehicle","authors":"David Krzikalla, J. Měsíček, J. Petrů, A. Slíva, Jakub Smiraus","doi":"10.35248/2168-9873.19.8.315","DOIUrl":"https://doi.org/10.35248/2168-9873.19.8.315","url":null,"abstract":"This paper presents an analysis of the torsional stiffness of the frame of the Formula TU Ostrava team vehicle Vector 04. The first part introduces the Formula SAE project and the importance of torsional stiffness in frame structures. The paper continues with a description of the testing method used to determine torsional stiffness and an explanation of the experimental testing procedure. The testing method consists of attaching the frame with suspension to two beams. A force is applied to one of the beams, causing a torsional load on the frame. From displacements of certain nodes of the frame, overall and sectional torsion stiffness is then determined. Based on the experiment, an FEM simulation model was created and refined. Simplifications to the simulation model are discussed, and boundary conditions are applied to allow the results to be compared with the experiment for verification and the simulation to be tuned. The results of the simulation and experiment are compared and com-pared with the roll stiffness of suspension. The final part of the paper presents a conclusion section where the results are discussed.","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69996599","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: 10

Modeling and Simulation of High-Performance Solar Thermoelectric Generator 高性能太阳能热电发电机的建模与仿真

Journal of applied mechanical engineering Pub Date : 2019-01-01 DOI: 10.35248/2168-9873.19.8.320

Hadi Ali Madkhali, Hosung Lee

{"title":"Modeling and Simulation of High-Performance Solar Thermoelectric Generator","authors":"Hadi Ali Madkhali, Hosung Lee","doi":"10.35248/2168-9873.19.8.320","DOIUrl":"https://doi.org/10.35248/2168-9873.19.8.320","url":null,"abstract":"A new and optimum design of a STEG has been developed for attaining an increased efficiency of 21.6%. The new design consists of three cascaded thermoelectric materials. In addition, it includes two glass panes, a selective solar absorber, two radiation shields, and forced air cooling system. The design is modeled theoretically and numerically using ANSYS software. Nomenclature: Area of the absorber (Aa); The cross-sectional area of the thermoelectric elements (Ae); Cross sectional area of thermoelement (Ap, An); Optical concentration (Copt); Thermal concentration (Cth); Direct current (DC); Thermal conductivity (W/mk) (k); Thermal Conductivity for p-type and n-type (Kp, Kn); Leg length (L); Number of thermocouples (n); Heat flux (q); Rate of heat liberated at the cold junction (Qc); Rate of heat absorbed at the hot junction (Qb); Internal electrical resistance (R); Load resistance (RL); Internal electrical resistance for p-type and n-type (Rp, Rn); Solar thermoelectric generator (STEG); Thermoelectric generator (Teg); Voltage (V); Power output (W); Figure of merit with unit of (1/k) (Z); Seebeck coefficient with unit of (μV/K) (Α); Absorptivity (Αa); Junction temperatures (Th,c,1,2,3,4); Emissivity (E); Stefan constant (σ); Transmissivity of the glass (Τg); Thomson coefficient (τ); Electrical resistivity (Ω cm) (ρ)","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69996354","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