Journal of applied mechanical engineering最新文献_第8页

Vibration Analysis of a Turbulent Fluid Passing Inside an Elbow ShapedPipe Section 弯头管段内湍流的振动分析

Journal of applied mechanical engineering Pub Date : 2017-04-07 DOI: 10.4172/2168-9873.1000273

H. Keshtkar, Jafari Aa

引用次数: 1

CFD Simulation of Ejector in Steam Jet Refrigeration 蒸汽喷射制冷中喷射器的CFD模拟

Journal of applied mechanical engineering Pub Date : 2017-04-06 DOI: 10.4172/2168-9873.1000263

Surya Sd, Vasu Ta, Raghavan Ks, Murthy Chavali

引用次数: 7

Strength and Behavior of Bolted Ultra-High Performance Concrete PanelJoint with Geometric Parameter 考虑几何参数的螺栓连接超高性能混凝土板节点强度与性能

Journal of applied mechanical engineering Pub Date : 2017-03-26 DOI: 10.4172/2168-9873.1000261

Yang-Hee Kwon, S. Chung, Sung-Gul Hong

引用次数: 3

Effect of Permanent Formwork using Ultra-High Performance Concrete onStructural Behaviour of Reinforced Concrete Beam Subjected to Bending asa Function of Reinforcement Parameter 超高性能混凝土永久模板对钢筋混凝土梁受弯结构性能的影响

Journal of applied mechanical engineering Pub Date : 2017-03-26 DOI: 10.4172/2168-9873.1000260

Sung-Hoon Kang, Sung-Gul Hong, Yang-Hee Kwon

{"title":"Effect of Permanent Formwork using Ultra-High Performance Concrete onStructural Behaviour of Reinforced Concrete Beam Subjected to Bending asa Function of Reinforcement Parameter","authors":"Sung-Hoon Kang, Sung-Gul Hong, Yang-Hee Kwon","doi":"10.4172/2168-9873.1000260","DOIUrl":"https://doi.org/10.4172/2168-9873.1000260","url":null,"abstract":"In order to use ultra-high performance concrete (UHPC) as a permanent formworks for a reinforced concrete (RC) slab in a construction field, the structural performance of the RC-UHPC composite beams subjected to bending are experimentally investigated. The main parameters are the rebar location and the UHPC thickness. The experimental results show that the crack patterns of the composite specimen is different compared to the reference RC specimen, because of the crack localization phenomenon of UHPC. Within the post peak state of the load-deflection relationship, the composite specimen behaves similar to the RC specimen. However, the reinforcement of deformed bars in the UHPC section shows a synergy effect on structural performance; both load and deformation capacity is significantly increased. Nevertheless, it is required to reinforce the bars in normal concrete section for preventing debonding failure as well as for retaining the load resisting capacity at the post peak state. The best structural performance of the composite specimen is found when the reinforcement ratios are the same in the both normal concrete and UHPC sections. The results of this study help to apply and design the thin UHPC panel as a permanent formwork for retrofitting existing structures.","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2168-9873.1000260","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43920462","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: 4

Analysis of Changing Wear Assembly Screw-Engine with the use ofAutomatic Systems 利用自动系统改变螺杆发动机装配磨损的分析

Journal of applied mechanical engineering Pub Date : 2017-03-10 DOI: 10.4172/2168-9873.1000257

K. Epifantsev, A. Nikulin

{"title":"Analysis of Changing Wear Assembly Screw-Engine with the use ofAutomatic Systems","authors":"K. Epifantsev, A. Nikulin","doi":"10.4172/2168-9873.1000257","DOIUrl":"https://doi.org/10.4172/2168-9873.1000257","url":null,"abstract":"Waste recycling in Russia merely reaches 5% to 7% versus up to 60% of MSW in the EU, and over 90% of waste in Russia is delivered to waste landfills and unauthorised dumps so that waste accumulation is increasing. This environmental situation is a national priority. The Decree of the President of the Russian Federation dated 5 January 2017 announces 2017 the Year of Ecology in Russia. Most environmental reforms stipulated by amendments to laws are enacted from 1 January 2017. These are primarily measures aimed at emissions and discharges control using best available technologies and breakthrough provisions of the Industrial and Consumer Waste law. The Clean Country, priority project of the Russian Government, will be implemented from 2017 to 2025 with the key aim of reducing the environmental footprint from municipal solid waste disposal and mitigating environmental risks of an accumulated environmental damage. The priority project involves the construction of five environment-friendly facilities for the thermal processing of municipal solid waste (waste incineration plants), four of them to be built in the Moscow Region and one facility to be built in the Republic of Tatarstan. An alternative to waste incineration is municipal waste recycling by moulding in extrusion machines to make pellets to be further used in the fuel or construction industries. The profitability of a waste recycling facility is dependent on a sound choice of extrusion equipment with the best value for money.","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2168-9873.1000257","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41854619","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

Deformation-Based Design Method of Aluminium Helideck for Eurocode 9 欧洲规范9中基于变形的铝制直升机甲板设计方法

Journal of applied mechanical engineering Pub Date : 2017-03-10 DOI: 10.4172/2168-9873.1000258

Parks Js, Seo Jk

{"title":"Deformation-Based Design Method of Aluminium Helideck for Eurocode 9","authors":"Parks Js, Seo Jk","doi":"10.4172/2168-9873.1000258","DOIUrl":"https://doi.org/10.4172/2168-9873.1000258","url":null,"abstract":"Aluminium alloys are increasingly used in the construction industry, as they offer high strength-to-weight ratios, good durability and ease of fabrication. An aluminium helideck structure should satisfy the requirements of offshore regulations and rule notations such as the Australian/New Zealand Standard and EUROCODE 9, in which the width-tothickness ratio and yield stress are the recognised governing parameters for the design of cross-sections. Aluminium helideck structures are composed of several structural units, which can be aluminium or steel. The aluminium parts are the pancake, girder, safety net, etc. In this study, the aluminium helideck design with the relevant EUROCODE 9 is based on the strength calculation. It may be possible to reduce the calculation time and thus provide a reasonable solution in terms of a practical design. The static and nonlinear collapse behaviour of a developed structure is investigated in this study. The primary aim is to provide a reasonable solution that can improve product quality by checking both strength and deformation criteria. The effect of deflection during the fabrication stage is considered in the structural design based on the newly proposed EUROCODE 9. Lastly, a comparison between the results of this study and those from finite element analysis is presented.","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2168-9873.1000258","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44844746","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

Performance Analysis of a Helium Turbo-expander for CryogenicApplications with a Process Modeling Tool: Aspen HYSYS 用过程建模工具Aspen HYSYS对低温应用的氦涡轮膨胀机的性能分析

Journal of applied mechanical engineering Pub Date : 2017-03-10 DOI: 10.4172/2168-9873.1000259

Joshi Dm

{"title":"Performance Analysis of a Helium Turbo-expander for CryogenicApplications with a Process Modeling Tool: Aspen HYSYS","authors":"Joshi Dm","doi":"10.4172/2168-9873.1000259","DOIUrl":"https://doi.org/10.4172/2168-9873.1000259","url":null,"abstract":"Cryogenic system refers to interacting group of components involving low temperature. Cryogenic engineering deals with the development and improvement of low temperature techniques, processes, and equipment. They are applicable to helium refrigerators and various liquefiers. Nowadays, the energy crisis has forced the need to recover the energy which is normally wasted in other industrial processes. Reduction of gas pressure is one of such process in which there is a high loss of energy. To prevent such high wastage of energy, Turbo-expander which is the heart for the production of low temperature by reducing the pressure to a low value, has been introduced in the industries. Turbo-expanders are used in almost every segments of the oil and gas industry to produce Cryogenic refrigeration. Before implementation of such a critical component in the plant, it is necessary to carry out the performance analysis of turbo-expander. \u0000In this paper, a process simulator called Aspen HYSYS is used for the analysis of Helium turbo-expander (Helium gas is taken as a process sample gas) and detailed observation is carried out for checking the performance of helium turbo-expander at various adiabatic efficiencies. The results provide useful indications on the selection of turboexpander to obtain required output at various efficiencies with variation in temperature. Keeping the constraints of the plant in mind, this analysis can thus result in the design of an efficient productive plant","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45034421","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

Fracture Properties Investigation of Artocarpus odoratissimus Compositewith Polypropylene (PP) 罗汉果与聚丙烯复合材料的断裂性能研究

Journal of applied mechanical engineering Pub Date : 2017-02-24 DOI: 10.4172/2168-9873.1000255

Shah Mkm, Sapuan Sm, Al-Fareez Bin-Aslie, O. IrmaWani, J. Sarifudin

{"title":"Fracture Properties Investigation of Artocarpus odoratissimus Compositewith Polypropylene (PP)","authors":"Shah Mkm, Sapuan Sm, Al-Fareez Bin-Aslie, O. IrmaWani, J. Sarifudin","doi":"10.4172/2168-9873.1000255","DOIUrl":"https://doi.org/10.4172/2168-9873.1000255","url":null,"abstract":"Wood plastic composites (WPC) were done using a matrix of polypropylene (PP) thermoplastic resin with wood fibre from Artocarpus odoratissimus as filler. The purpose of this study is to investigate the fracture properties of Artocarpus odoratissimus composite with PP. The WPC was manufactured by a hot - press technique with varying formulations which are 10:0 (100% pure PP), 50:50 (40 g of wood fibre and 40 g of PP) and 60:40 (48 g of wood fibre and 32 g of PP). The mechanical properties were investigated. Tensile and flexural were carried out according to ASTM D 638 and ASTM D 790. The results were analysed to calculate the tensile strength. Tensile strength at break is ranged from 13.2 N/mm2 to 21.7 N/mm2. While, the flexural strength obtained is varying from 14.7 N/mm2 to 31.1 N/mm2. The results of the experiment showed that tensile and flexural properties of the composite increased with the adding of wood fibre material. Finally, the Scanning Electron Microscope (SEM), have been done to study the fracture behaviour of the WPC specimens.","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2168-9873.1000255","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41408541","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

UAS Propeller/Rotor Sound Pressure Level Reduction Through LeadingEdge Modification 通过LeadingEdge改进降低无人机螺旋桨/旋翼声压级

Journal of applied mechanical engineering Pub Date : 2017-02-24 DOI: 10.4172/2168-9873.1000254

M. N. Callender

{"title":"UAS Propeller/Rotor Sound Pressure Level Reduction Through LeadingEdge Modification","authors":"M. N. Callender","doi":"10.4172/2168-9873.1000254","DOIUrl":"https://doi.org/10.4172/2168-9873.1000254","url":null,"abstract":"Manned aviation is regulated by the Federal Aviation Administration (FAA) to provide for safe, secure, efficient, and environmentally responsible aviation in the United States. One environmental issue regulated by the FAA is the noise created by aircraft. Federal Aviation Regulation (FAR) Title 14 Part 36 deals specifically with sound pressure levels (SPL) per aircraft type when the aircraft are in close proximity to the ground. Minimizing aircraft noise helps to maintain positive relationships between the aviation community and the general public. Unmanned aircraft systems (UAS) are a very rapidly growing segment of the aviation industry that operate within the National Airspace System (NAS); however, there is currently no regulation for UAS SPL. The UAS are regulated, as of August 29, 2016, such that they are mandated to be in close proximity to the ground (no higher than 400 ft). As with manned aircraft, UAS produce high levels of SPL, much of which is due to the propellers/rotors. The combination of proximity to the ground, high SPL, and increasing UAS density will most certainly result in a negative public reaction. To minimize the audible impact of UAS, the author sought to minimize the SPL of small UAS propellers/rotors via leading edge modifications. The modification consisting of a leading edge comb was inspired by one of the three characteristics found on the flight feathers of certain owls: leading edge comb, trailing edge tuft, and upper surface porosity. The modifications could successfully reduce SPL while maintaining constant levels of thrust over a wide range of rpm.","PeriodicalId":90573,"journal":{"name":"Journal of applied mechanical engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2168-9873.1000254","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45162485","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: 7

Theoretical Results for Utilizing Nozzle Between the Wind-Way andWind Turbine in Roof of the Buildings - Wind Speed Increase for WindTurbine to Produce Electricity 利用建筑物屋顶风道与风力机之间的喷嘴的理论结果——风力机提高风速发电

Journal of applied mechanical engineering Pub Date : 2017-02-24 DOI: 10.4172/2168-9873.1000256

Bazgir As

引用次数: 0