International Journal of Mechanical and Materials Engineering最新文献_第10页

A new method to study free transverse vibration of the human lumbar spine as segmental multi-layer Timoshenko and Euler–Bernoulli beams 采用分段多层Timoshenko - Euler-Bernoulli梁研究人腰椎自由横向振动的新方法

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2018-07-13 DOI: 10.1186/s40712-018-0093-y

H. Asgharzadeh Shirazi, M. Fakher, A. Asnafi, S. Hosseini Hashemi

引用次数: 1

Taguchi-fuzzy multi-response optimization in fly cutting process and applying in the actual hobbing process 飞刀加工中的田口模糊多响应优化及其在滚齿加工中的应用

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2018-04-11 DOI: 10.1186/s40712-018-0092-z

Minh Tuan Ngo, Vi Hoang, Sinh Vinh Hoang

{"title":"Taguchi-fuzzy multi-response optimization in fly cutting process and applying in the actual hobbing process","authors":"Minh Tuan Ngo, Vi Hoang, Sinh Vinh Hoang","doi":"10.1186/s40712-018-0092-z","DOIUrl":"https://doi.org/10.1186/s40712-018-0092-z","url":null,"abstract":"Applying nanofluid made by adding alumina nanoparticles to industrial oil may reduce the cutting force, friction, and cutting temperature and, from that, improve the tool life in the hobbing process. However, it is difficult to set up the experiment for the actual gear hobbing process, because measuring the cutting force and temperature in the hobbing process is very complicated and expensive. Therefore, a fly hobbing test on the horizontal milling machine was performed to simulate the actual hobbing process.In this research, the fuzzy theory was combined with the Taguchi method in order to optimize multi-responses of the fly hobbing process as the total cutting force, the force ratio Fz/Fy, the cutting temperature, and the surface roughness.The optimal condition—A1B1C3 (the cutting speed 38?mpm, the nanoparticle size 20?nm, and concentration 0.5%)—was determined by analyzing the performance index (FRTS) of the fuzzy model. Furthermore, this condition was applied to the actual hobbing process in the FUTU1 Company and compared with the actual conditions of this company and other conditions using the nanolubricant with 0.3% Al2O3, 20?nm. The results show that it can reduce a maximum 39.3% of the flank wear and 59.4% of the crater wear on the hob when using the optimal conditions.The study indicates that the optimal condition determined by using Taguchi-Fuzzy method can be applied in the FUTU1 company with the high efficiency.","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"13 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2018-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40712-018-0092-z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4745565","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

Establishing a simple and reliable method of measuring ductility of fine metal wire 建立了一种简单可靠的测量细金属丝延展性的方法

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2018-03-02 DOI: 10.1186/s40712-018-0091-0

Shiori Gondo, Shinsuke Suzuki, Motoo Asakawa, Kosuke Takemoto, Kenichi Tashima, Satoshi Kajino

{"title":"Establishing a simple and reliable method of measuring ductility of fine metal wire","authors":"Shiori Gondo, Shinsuke Suzuki, Motoo Asakawa, Kosuke Takemoto, Kenichi Tashima, Satoshi Kajino","doi":"10.1186/s40712-018-0091-0","DOIUrl":"https://doi.org/10.1186/s40712-018-0091-0","url":null,"abstract":"Measurement of the ductility like elongation and reduction of area of the fine metal wire is important because of the progress for the weight reduction and miniaturization of various products. This study established a simple and reliable method of measuring the ductility of a fine metal wire.Tensile and loading-unloading tests were performed with applying initial load to high-carbon steel wire (diameters of 0.06–0.296 mm) through capstan-type grippers for non-metal fiber. The wire fastened with the grippers was separated into three parts: the fastened part, the contact part, and the non-contact part. Scanning electron microscope (SEM) images were used to measure the wire radius under uniform deformation and agreed well with the radius calculated using the radius before tensile testing and uniform elongation.The following conditions were clarified: non-slippage at the fastening between gripper and wire, a longitudinally uniform elongation, negligible cross-head bending, and the stroke calculation accuracy of elongated length by the initial load. Thus, uniform elongations were calculated as the ratio of the stroke at 0 N subtracted from the stroke at maximum tensile load to the additional initial chuck distance and the stroke at 0 N. The maximum error of uniform elongation was 0.21%. The reduction of area could be calculated by using the radius at uniform deformation portion, while the radius at the most constricted point was measured using SEM image of one fractured piece and uniform elongation. The measurement error of reduction of area was 1.9%.This measurement method can be applied to other metal wires less than 1 mm in diameter.","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"13 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2018-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40712-018-0091-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4435516","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: 6

RETRACTED ARTICLE: Hydrothermal analysis on MHD squeezing nanofluid flow in parallel plates by analytical method 用解析法分析MHD压缩纳米流体在平行板中的流动

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2018-02-26 DOI: 10.1186/s40712-018-0089-7

Kh. Hosseinzadeh, M. Alizadeh, D. D. Ganji

{"title":"RETRACTED ARTICLE: Hydrothermal analysis on MHD squeezing nanofluid flow in parallel plates by analytical method","authors":"Kh. Hosseinzadeh, M. Alizadeh, D. D. Ganji","doi":"10.1186/s40712-018-0089-7","DOIUrl":"https://doi.org/10.1186/s40712-018-0089-7","url":null,"abstract":"In this paper, the heat and mass transfer of MHD nanofluid squeezing flow between two parallel plates are investigated. In squeezing flows, a material is compressed between two parallel plates and then squeezed out radially. The significance of this study is the hydrothermal investigation of MHD nanofluid during squeezing flow. The affecting parameters on the flow and heat transfer are Brownian motion, Thermophoresis parameter, Squeezing parameter and the magnetic field.By applying the proper similarity parameters, the governing equations of the problem are converted to nondimensional forms and are solved analytically using the Homotopy Perturbation Method (HPM) and the Collocation Method (CM). Moreover, the analytical solution is compared with numerical Finite Element Method (FEM) and a good agreement is obtained.The results indicated that increasing the Brownian motion parameter causes an increase in the temperature profile, while an inverse treatment is observed for the concentration profile. Also, it was found that enhancing the thermophoresis parameter results in decreasing the temperature profile and augmenting the concentration profile.Effects of active parameters have been considered for the flow, heat and mass transfer. The results indicated that temperature boundary layer thickness will increases by augmentation of Brownian motion parameter and Thermophoresis parameter, while it decreases by raising the other active parameters.","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"13 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2018-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40712-018-0089-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4998675","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: 65

Study of the sensitivity of high-strength cold-resistant shipbuilding steels to thermal cycle of arc welding 高强度耐寒造船钢对电弧焊热循环的敏感性研究

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2018-02-05 DOI: 10.1186/s40712-018-0090-1

Pavel Layus, Paul Kah, Elena Khlusova, Victor Orlov

{"title":"Study of the sensitivity of high-strength cold-resistant shipbuilding steels to thermal cycle of arc welding","authors":"Pavel Layus, Paul Kah, Elena Khlusova, Victor Orlov","doi":"10.1186/s40712-018-0090-1","DOIUrl":"https://doi.org/10.1186/s40712-018-0090-1","url":null,"abstract":"Structure and properties of welded joints of low-alloy thermomechanically processed (09G2FB) and quenched and tempered shipbuilding steels (10XN2MD, 08XN3MD, and 12XN3MF), welded with manual metal arc welding (MMA) and submerged arc welding (SAW), were studied.Effects of specific energy input on the microstructure, mechanical properties, and impact energy of the heat-affected zone (HAZ) have been investigated, and probable reasons for crack formation in welded joints have been found.It was found that welding heat input increase leads to a significant increase in grain size near the fusion boundary and the formation of martensite with high hardness. Therefore, the heat input is recommended to be limited to 2.5–3.5?kJ/mm for these specific steel grades.The study indicates that microalloying elements can be used to limit the grain growth when the steel is subjected to high temperatures during welding thermal cycle. Carbon content and alloying level reduction tend to increase the steel ductility and lower the HAZ toughness.","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"13 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2018-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40712-018-0090-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4540852","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: 17

Flow and heat transfer of dusty hyperbolic tangent fluid over a stretching sheet in the presence of thermal radiation and magnetic field 含尘双曲切线流体在热辐射和磁场作用下在拉伸薄片上的流动和传热

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2018-01-22 DOI: 10.1186/s40712-018-0088-8

K. Ganesh Kumar, B. J. Gireesha, R. S. R. Gorla

{"title":"Flow and heat transfer of dusty hyperbolic tangent fluid over a stretching sheet in the presence of thermal radiation and magnetic field","authors":"K. Ganesh Kumar, B. J. Gireesha, R. S. R. Gorla","doi":"10.1186/s40712-018-0088-8","DOIUrl":"https://doi.org/10.1186/s40712-018-0088-8","url":null,"abstract":"This paper explores the impact of thermal radiation on boundary layer flow of dusty hyperbolic tangent fluid over a stretching sheet in the presence of magnetic field. The flow is generated by the action of two equal and opposite. A uniform magnetic field is imposed along the y-axis and the sheet being stretched with the velocity along the x-axis. The number density is assumed to be constant and volume fraction of dust particles is neglected. The fluid and dust particles motions are coupled only through drag and heat transfer between them.The method of solution involves similarity transformation which reduces the partial differential equations into a non-linear ordinary differential equation. These non-linear ordinary differential equations have been solved by applying Runge-Kutta-Fehlberg forth-fifth order method (RKF45 Method) with help of shooting technique.The velocity and temperature profile for each fluid and dust phase are aforethought to research the influence of assorted flow dominant parameters. The numerical values for skin friction coefficient and Nusselt number are maintained in Tables 3 and 4. The numerical results of a present investigation are compared with previous published results and located to be sensible agreement as shown in Tables 1 and 2.It is scrutinized that, the temperature profile and corresponding boundary layer thickness was depressed by uplifting the Prandtl number. Further, an increase in the thermal boundary layer thickness and decrease in momentum boundary layer thickness was observed for the increasing values of the magnetic parameter.","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"13 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2018-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40712-018-0088-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4857151","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: 57

Simulated and experimental investigation of the airfoil contour forming of 301 austenitic stainless steel considering the springback 考虑回弹的301奥氏体不锈钢翼型成形模拟与实验研究

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2018-01-05 DOI: 10.1186/s40712-017-0087-1

Reza Bagheinia, Aazam Ghassemi

引用次数: 5

Structural Analysis of Biologically Inspired Small Wind Turbine Blades 生物启发小型风力涡轮机叶片结构分析

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2017-08-22 DOI: 10.1186/s40712-017-0085-3

Cory Seidel, Sanjay Jayaram, Leah Kunkel, Alexander Mackowski

{"title":"Structural Analysis of Biologically Inspired Small Wind Turbine Blades","authors":"Cory Seidel, Sanjay Jayaram, Leah Kunkel, Alexander Mackowski","doi":"10.1186/s40712-017-0085-3","DOIUrl":"https://doi.org/10.1186/s40712-017-0085-3","url":null,"abstract":"Renewable energy resources are becoming more important to meet growing energy demands while reducing pollutants in the environment. In the current market, wind turbines are primarily restricted to rural use due to the large size, noise creation, and physical appearance. However, wind turbines possess the ability to run at any time of the day. Horizontal axis wind turbines remain the most widely used, but there is significant room for improvement in vertical axis wind turbines.While vertical axis wind turbines are not reaching the same level of efficiency of horizontal axis wind turbines, there are significant benefits to researching improvements. One of the main benefits is to make use of vertical axis wind turbines in urban settings. In order to improve the efficiency of the vertical axis wind turbine, a biological approach was taken to design blades that mimic the shape of maple seeds and triplaris samara seeds. This approach was taken because due to its geometrical properties, typically extra lift is generated.The results obtained through FEA simulations were consistent with the expected results for the application that was considered. The results obtained provide valuable insight for engineers to iterate and design optimum wind turbine blades taking advantage of biological phenomena applied to conventional airfoils.The purpose of this paper is to provide structural analysis details into the design of a vertical axis wind turbine blades that mimic the geometry of maple and triplaris samaras seeds.","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"12 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40712-017-0085-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4853050","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: 14

Effect of nonlinear thermal radiation on double-diffusive mixed convection boundary layer flow of viscoelastic nanofluid over a stretching sheet 非线性热辐射对粘弹性纳米流体在拉伸片上双扩散混合对流边界层流动的影响

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2017-08-18 DOI: 10.1186/s40712-017-0083-5

K. Ganesh Kumar, B. J. Gireesha, S. Manjunatha, N. G. Rudraswamy

{"title":"Effect of nonlinear thermal radiation on double-diffusive mixed convection boundary layer flow of viscoelastic nanofluid over a stretching sheet","authors":"K. Ganesh Kumar, B. J. Gireesha, S. Manjunatha, N. G. Rudraswamy","doi":"10.1186/s40712-017-0083-5","DOIUrl":"https://doi.org/10.1186/s40712-017-0083-5","url":null,"abstract":"The present exploration deliberates the effect of nonlinear thermal radiation on double diffusive free convective boundary layer flow of a viscoelastic nanofluid over a stretching sheet. Fluid is assumed to be electrically conducting in the presence of applied magnetic field. In this model, the Brownian motion and thermophoresis are classified as the main mechanisms which are responsible for the enhancement of convection features of the nanofluid. Entire different concept of nonlinear thermal radiation is utilized in the heat transfer process.Appropriate similarity transformations reduce the nonlinear partial differential system to ordinary differential system which is then solved numerically by using the Runge–Kutta–Fehlberg method with the help of shooting technique. Validation of the current method is proved by having compared with the preexisting results with limiting solution.The effect of pertinent parameters on the velocity, temperature, solute concentration and nano particles concentration profiles are depicted graphically with some relevant discussion and tabulated result.It is found that the effect of nanoparticle volume fraction and nonlinear thermal radiation stabilizes the thermal boundary layer growth. Also it was found that as the Brownian motion parameter increases, the local Nusselt number decreases, while the local friction factor coefficient and local Sherwood number increase.","PeriodicalId":592,"journal":{"name":"International Journal of Mechanical and Materials Engineering","volume":"12 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2017-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40712-017-0083-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5002744","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: 43

A quasi-analytical solution of homogeneous extended surfaces heat diffusion equation 齐次扩展表面热扩散方程的拟解析解

IF 3.1

International Journal of Mechanical and Materials Engineering Pub Date : 2017-08-16 DOI: 10.1186/s40712-017-0084-4

Ernest Léontin Lemoubou, Hervé Thierry Tagne Kamdem

引用次数: 0