Universal Journal of Mechanical Engineering最新文献_第7页

Modeling of the Automatic Mechanical Injection System 自动机械喷射系统建模

Universal Journal of Mechanical Engineering Pub Date : 2019-11-01 DOI: 10.13189/ujme.2019.070614

Akram Louiz

引用次数: 1

Assessment of Stress Raiser Factor Using Finite Element Solvers 用有限元法计算应力提升因子

Universal Journal of Mechanical Engineering Pub Date : 2019-11-01 DOI: 10.13189/ujme.2019.070608

Armand Augustin Fondjo, T. Dzogbewu

引用次数: 2

Modeling and Simulation of Transient Impact Behavior of Elastic-Plastic Beam 弹塑性梁瞬态冲击特性建模与仿真

Universal Journal of Mechanical Engineering Pub Date : 2019-11-01 DOI: 10.13189/ujme.2019.070607

Taoufik Kriflou, M. Rachik, L. Azrar, Khalid El Bikri

引用次数: 2

Design and Development of Zero Electricity Water Pump for Rural Development 农村发展零电水泵的设计与研制

Universal Journal of Mechanical Engineering Pub Date : 2019-11-01 DOI: 10.13189/ujme.2019.070615

M. Lee, J. Y. Chan, J. Ling, Pui San Lee

{"title":"Design and Development of Zero Electricity Water Pump for Rural Development","authors":"M. Lee, J. Y. Chan, J. Ling, Pui San Lee","doi":"10.13189/ujme.2019.070615","DOIUrl":"https://doi.org/10.13189/ujme.2019.070615","url":null,"abstract":"This study aims to develop a water pump that utilizes natural hydro energy as driving force to deliver water to a higher ground. The conceptual design of using water wheel to extract kinetic energy from water flow and transfer the energy to power multiple piston pump was created based on the extensive literature review findings. The actual prototype is then built and modified to suit the actual environment considerations. Findings show that single pump is able to produce maximum pressure head of 7.14 meters and the maximum volume flowrate achieved is 19.2 l/hr (320ml/min). However, when multiple piston is connected in series (in this research three pistons is used), the maximum water head increased to 13.77 meters and the maximum volume flowrate about 19.2 l/hr. This result shows that the water pump can be used in remote area or places at higher ground that does not have constant water access. Performance of the whole system can be improved by several factors such as adding more blades to the water wheel, steeper angle and better piston shaft design for water pump, and also proper water sealing of the whole system to prevent head loss and increase the overall performance.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131289470","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

Stress and Deflection of a Concrete Block in a Four-Point Bending (FPB) Test 混凝土块体四点弯曲试验中的应力和挠度

Universal Journal of Mechanical Engineering Pub Date : 2019-11-01 DOI: 10.13189/ujme.2019.070601

W. Siswanto, Bayu Putra Martama

引用次数: 0

Effect of TiO2 on Plasma Sprayed Al2O3 Based Composite Coatings at 900℃ in Molten Salt Environment 熔盐环境下900℃等离子喷涂Al2O3基复合涂层中TiO2的影响

Universal Journal of Mechanical Engineering Pub Date : 2019-09-01 DOI: 10.13189/ujme.2019.070501

Gurdeep Singh, K. Goyal, R. Goyal

引用次数: 3

Stability Analysis of Wang's Stretching/ Shrinking Sheet Problem for Nanofluids 纳米流体的Wang拉伸/收缩薄片问题的稳定性分析

Universal Journal of Mechanical Engineering Pub Date : 2019-09-01 DOI: 10.13189/ujme.2019.070506

Mohamad Mustaqim Junoh, F. Ali, N. Arifin, N. Bachok

引用次数: 3

Effect of Thermal Radiation on a Three-dimensional Stagnation Point Region in Nanofluid under Microgravity Environment 微重力环境下热辐射对纳米流体三维驻点区的影响

Universal Journal of Mechanical Engineering Pub Date : 2019-09-01 DOI: 10.13189/ujme.2019.070504

M. Kamal, N. A. Rawi, M. R. Ilias, Anati Ali, S. Shafie

{"title":"Effect of Thermal Radiation on a Three-dimensional Stagnation Point Region in Nanofluid under Microgravity Environment","authors":"M. Kamal, N. A. Rawi, M. R. Ilias, Anati Ali, S. Shafie","doi":"10.13189/ujme.2019.070504","DOIUrl":"https://doi.org/10.13189/ujme.2019.070504","url":null,"abstract":"The unsteady three dimensional boundary layer flow near a stagnation point region is studied numerically under the influence of microgravity environment. The boundary layer plate was embedded by the nanofluid with nanosized copper particles and water as a based fluid together with thermal radiation effect. The problem was mathematically formulated in term of coupled governing equations consisting of continuity, momentum and energy equations derived from the fundamental physical principles with Tiwari and Das nanofluid model. Boundary layer and Boussinesq approximation were then applied to the coupled equations and then reduced into non-dimensional equations to lessen the complexity of the problem using semi-similar transformation technique. Implicit finite different method known as Keller box method was used in this problem. The problem was then analyzed in terms of physical quantities of principal interest known as skin frictions and Nusselt number which explained the flow behavior and heat transfer analysis. From the outcome of the analysis, it was found that the parameter values for curvature ratio lead to the different cases of the stagnation point flow which is either plane stagnation flow or asymmetry stagnation flow. On the other hand, by increasing the nanoparticles volume fraction which is one of the nanofluid parameter may increase the skin frictions on both x- and y- directions. The presence of thermal radiation parameter was found to have increased the rate of change of heat transfer at the boundary layer flow.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126045388","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

Designer's Ethical Responsibility and Ethical Design 设计师的伦理责任与伦理设计

Universal Journal of Mechanical Engineering Pub Date : 2019-09-01 DOI: 10.13189/UJME.2019.070502

A. Atak, A. Şık

{"title":"Designer's Ethical Responsibility and Ethical Design","authors":"A. Atak, A. Şık","doi":"10.13189/UJME.2019.070502","DOIUrl":"https://doi.org/10.13189/UJME.2019.070502","url":null,"abstract":"Design affects the entire lifespan of a product. Humans design ideas in their environments, especially to meet their own needs. People come to design ideas and abilities from various objects and events in nature, and use these to increase their design capabilities. With the increase in human population, proliferation of product needs, and the dangerous use of products, the ethical risks have increased. The risks within unethical designs have now reached all levels of human life. Products have been introduced to the market without considering their ethics, and in many of them, only the material purpose has been pursued, instead of the benefit to humanity. This research focused on the goal of the product designers, which is to design and develop a product, while contributing to the awareness that the product needs to be subjected to both risk and ethical analyses as with all other requirements. The dominant task of this study is to enable designers and their designs to develop their own ethical discourse and concepts. In doing so, the most forward aim is to not damage humans, but to design what is useful. The impact on the designer is to have ethical responsibility for their designs.","PeriodicalId":275027,"journal":{"name":"Universal Journal of Mechanical Engineering","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128606094","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

Oscillating Free Convection Flow between Two Parallel Plates with Mass Diffusion 具有质量扩散的两个平行板间振荡自由对流流动

Universal Journal of Mechanical Engineering Pub Date : 2019-09-01 DOI: 10.13189/ujme.2019.070503

F. Zulkiflee, A. Q. Mohamad, M. R. Ilias, S. Shafie

引用次数: 0