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Wear Resistance Enhancement of AISI D3 Tool Steels by Cryogenic Treatment: A Review 低温处理提高AISI D3工具钢耐磨性的研究进展
Pub Date : 2018-05-05 DOI: 10.51983/arme-2018.7.1.2440
S. Ather, S. A. Sonawane
The aim of this study is to reveal the enhancement of wear resistance of AISI D3 Tool Steel by Cryogenic Treatment. Cryogenic Treatment is often referred as Cryotreatment, is an add-on process to the conventional heat treatment. In the experimentation process, samples of AISI D3 tool steel were taken in batches out of which some samples were treated with conventional heat treatment (QT) whereas other were cryogenically treated (QCT) at 77 K for a period of 24 hrs. Dry sliding wear test were carried out on Pin on Disk machine. The input parameters are Load (N), and sliding velocity (V). Trials were performed in combination of above said parameters. Later on SEM was been carried on the worked samples so as to compare the microstructural changes between the conventional heat treated samples and cryogenically treated samples.
本研究的目的是揭示AISI D3工具钢经低温处理后耐磨性的提高。深冷处理通常被称为低温处理,是常规热处理的附加工艺。在实验过程中,分批提取AISI D3工具钢样品,其中一些样品进行常规热处理(QT)处理,而另一些样品在77 K下进行低温处理(QCT),持续24小时。在销盘式机床上进行了干滑动磨损试验。输入参数为载荷(N)和滑动速度(V),结合上述参数进行试验。然后对加工后的试样进行扫描电镜分析,比较常规热处理试样和低温热处理试样的显微组织变化。
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引用次数: 3
Selection of the Disc Brake Material Using Pin on Disc Apparatus: A Review 用销盘式装置选择盘式制动器材料的研究进展
Pub Date : 2017-11-05 DOI: 10.51983/arme-2017.6.2.2432
Harvinder Singh
An automobile brake disc is a device used for slowing or stopping the motion of a wheel while it runs at certain speed. The mostly used brake disc material is cast iron which consumes much fuel due to high specific gravity. The main aim is to develop the material selection and select optimum material for the application of brake disc system for better working. The paper describes the tribological behavior of the conventional materials i.e. Gray cast Iron, Structural steel, Aluminum and High speed steel (HSS). In this paper to check major tribiological parameters for these four materials and try to suggest better new material compared to conventional existing material. After Test on wear machine we find the best suitable material for disc brake applications because of its low wear rate, low frictional force, low coefficient of friction, low cost, better mechanical properties than other.
汽车制动盘是一种装置,用于减缓或停止车轮的运动,当它运行在一定的速度。常用的制动盘材料是铸铁,由于比重高,消耗较多的燃料。其主要目的是研究制动盘系统的材料选择,为制动盘系统的应用选择最优材料,使制动盘系统更好地工作。本文介绍了灰铸铁、结构钢、铝和高速钢等常规材料的摩擦学性能。本文对这四种材料的主要三生物学参数进行了比较,并试图提出比传统现有材料更好的新材料。经过磨损机试验,我们找到了最适合盘式制动器应用的材料,因为它具有低磨损率,低摩擦力,低摩擦系数,低成本,比其他机械性能更好。
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引用次数: 2
Comparative Study of Al2O3 Nanofluid Heat Pipes Using Various Inclinations with Water Based Heat Pipes 不同倾角Al2O3纳米流体热管与水基热管的比较研究
Pub Date : 2017-11-05 DOI: 10.51983/arme-2017.6.2.2433
H. Hinge, N. T. Dhokane, S. Barhatte
An experimental study is carried out in order to quantify the net heat transfer from evaporator region of a heat pipe to the cold water poured inside cooling water pot mounted on the condenser end of the heat pipe. For this purpose a setup is designed in order to accommodate five heat pipes out of which four of them are charged with nanofluid in the increasing order such that the concentrations by the total volume of working fluid were 0.1%, 0.3%, 0.6% and 1% respectively and remaining one consisting pure water. For preparation of nanofluids water is used as the base fluid because of its reliability to high temperature and ease of availability. Nanoparticles of the size of 100nm were manufactured in nanolabs and TEM (Transmission Electron Microscopy) analysis is carried out. 20 RTDs (4 RTDs for each heat pipe) were used to measure the local wall temperature; five heaters are mounted at the bottom of heat pipe to heat the evaporator region of heat pipe, and a control panel consisting of temperature indicator, voltmeter and ammeter. A heat input in the steps of 25W is given to the evaporator and the performance is monitored for various concentrations by varying inclinations of heat pipes with respect to horizontal. The tests are stopped after a heat input of 100W. All the tried inclinations (30⁰,45⁰,60⁰,90⁰) proved that there is increase in the net heat transfer rate when heat pipes are charged with nanofluids than that of water.
为了定量研究热管蒸发器区域对热管冷凝器端冷却水罐内冷水的净换热,进行了实验研究。为此,设计了一种装置,以容纳5个热管,其中4个热管按增加的顺序装满纳米流体,使工作流体的浓度分别为0.1%、0.3%、0.6%和1%,其余一个由纯水组成。纳米流体的制备采用水作为基液,因为水耐高温且易于获得。在纳米实验室中制备了100nm大小的纳米颗粒,并进行了TEM(透射电子显微镜)分析。采用20个RTDs(每个热管4个RTDs)测量局部壁面温度;热管底部装有5个加热器,对热管蒸发器区域进行加热,控制面板由温度指示器、电压表、电流表组成。在25W的步骤中输入热量给蒸发器,并通过改变热管相对于水平的倾斜度来监测不同浓度下的性能。热输入100W后停止测试。所有尝试的斜度(30⁰、45⁰、60⁰、90⁰)都证明,热管中充满纳米流体比水的净传热率更高。
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引用次数: 0
Heat and Mass Transfer Effect on Steady MHD Flow through an Isothermal Vertical Porous Surface 等温垂直多孔表面稳态MHD流动的传热传质效应
Pub Date : 2017-11-05 DOI: 10.51983/arme-2017.6.2.2428
P. Moheswari
Magneto hydro dynamic effects of heat and mass transfer on continuously moving isothermal vertical porous surface is investigated. The boundary layer equations are transformed into ordinary differential equations. The Velocity, temperature and concentration profiles are studied for different non dimensional parameters like thermal Grashof number, mass Grashof number, Schmidt number, Prandtl number, porosity parameter and Hartmann number. The results are discussed with the help of graphs.
研究了连续运动等温垂直多孔表面的磁流体动力学传热传质效应。将边界层方程转化为常微分方程。研究了热格拉什夫数、质量格拉什夫数、施密特数、普朗特数、孔隙度参数和哈特曼数等不同无因次参数的速度、温度和浓度分布。用图形对结果进行了讨论。
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引用次数: 0
Multidisciplinary Technology of Animatronics: A Review 动物电子学多学科技术综述
Pub Date : 2017-11-05 DOI: 10.51983/arme-2017.6.2.2435
Omkar Utture, Nikhil S. Mane, Shubham S. Varute, Asawari B. Waingade
Animatronics is a developing technology which involves the disciplines of Mechanical Engineering, electronics engineering and animations to produce real life size replicas of the object working on robotic technology. Animatronics technology creates animated objects working on mechanisms which will seems and sense alive. These objects are more realistic compare to the robotic machines. The basic mechanism of these machines is a combination of different mechanical and electronic components. They can be powered by electrical motors, pneumatics or hydraulics, and their controlling mechanism can be manual controlled or computer controlled.The animatronics objects are made of mechatronics structure with fully functional and controlled mechanisms covered with detailed and colored skins. The alive nature of the animatronics object is result of artistically designed costuming of the object. Animatronics provide real life mirage to the non living structures. This paper provides review on different aspects of animatronics like. In this work, wide overview of animatronics with different present and future applications of the field of animatronics is rectified.
电子动画学是一门新兴的技术,它涉及机械工程、电子工程和动画学科,以生产真实尺寸的机器人工作对象的复制品。电子动画技术创造了在机械上工作的动画物体,这些物体看起来和感觉都是活的。与机器人相比,这些物体更加逼真。这些机器的基本机构是不同的机械和电子元件的组合。它们可以由电动机,气动或液压驱动,其控制机构可以手动控制或计算机控制。这些电子动物是由机电一体化结构制成的,具有完整的功能和可控制的机构,上面覆盖着详细的彩色皮肤。电子动画对象的生命本质是对对象的服装进行艺术设计的结果。电子动画为非生物结构提供了真实的海市蜃楼。本文综述了动物电子学的不同方面,如。在这项工作中,广泛概述了电子动画与不同的目前和未来的应用领域的电子动画。
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引用次数: 1
Inventory Control by Linear and Non Linear Demand Forecasting 基于线性和非线性需求预测的库存控制
Pub Date : 2017-11-05 DOI: 10.51983/arme-2017.6.2.2429
Rajesh V. Patil, A. N. Chapgaon
Now a day, supply chain practices are widely adopted in Indian industries .Research points out examination of success factors and implementations of the system in Indian industries. However, the adoption in Small and Medium Enterprises is not very common. Interestingly, multinational firms and large enterprises can invest huge capital for implementing latest information technology tools to share the information and carry day-to-day operations, but the investment and implementation is quite difficult for SMEs. This inspires us to investigate effect of new age supply chain technology like VMI practices in SMEs and other industries. VMI entails forecasting demand through joint efforts of customer and supplier, maintaining a targeted service level for customers, initiating and shipping supply orders, material control and customer order fulfillment.In this study, the results of adopting a partial vendor managed inventory practice, along with latest decision support tool like ANN, are presented. Outcomes of case study shows that deployment of vendor managed forecasting improves forecasting accuracy, reduces bullwhip, minimizes total supply chain cost, improves profits and most importantly improves customer satisfaction indexOverall five statistical models and five neural network models are adopted and compared. Study illustrates how a neural network aptly learns the case dynamics, and improves system performance. The results presented in this section demonstrates the effectiveness of the Focused Time Lagged Recurrent Neural Networks (FTLRNN) model compared to traditional and other neural network models. The significant finding of this research is results of forecasting error and other supply chain performance measures. Further study reveals that when we bracket the overstock and under stock cost in the supply chain cost, a forecast with minimum forecasting error may not lead to reduced supply chain cost or improved profits. This study also introduces a mixed model where the error obtained from statistical model is mixed with the forecast obtained by neural model and a new forecast is obtained. The analysis shows that the developed model could further improve supply chain performance in VMI setting.
如今,供应链实践在印度工业中被广泛采用。研究指出了对印度工业中成功因素和系统实施的检查。然而,在中小企业的采用并不普遍。有趣的是,跨国公司和大型企业可以投入大量资金来实施最新的信息技术工具,以实现信息共享和日常运营,但中小企业的投资和实施却相当困难。这激发了我们对新时代供应链技术如VMI实践在中小企业和其他行业的影响进行研究。VMI需要通过客户和供应商的共同努力来预测需求,为客户保持目标服务水平,启动和运输供应订单,物料控制和客户订单履行。在这项研究中,采用部分供应商管理库存实践的结果,以及最新的决策支持工具,如人工神经网络,被提出。案例研究结果表明,部署供应商管理预测提高了预测精度,减少了牛鞭,使供应链总成本最小化,提高了利润,最重要的是提高了客户满意度指数。研究说明了神经网络如何恰当地学习案例动态,并提高系统性能。本节给出的结果证明了与传统和其他神经网络模型相比,聚焦时间滞后递归神经网络(FTLRNN)模型的有效性。本研究的重要发现是预测误差和其他供应链绩效测量的结果。进一步的研究表明,当我们将库存过剩和库存不足成本纳入供应链成本时,预测误差最小的预测可能不会导致供应链成本的降低或利润的提高。本文还引入了一种混合模型,将统计模型得到的误差与神经模型得到的预测结果混合,得到一个新的预测结果。分析表明,该模型能够进一步提高VMI环境下的供应链绩效。
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引用次数: 0
Thermal Performance of Solar Cooker Based on Evacuated Tube Collector and PCM Storage Unit 基于真空管集热器和PCM存储单元的太阳能炊具热性能研究
Pub Date : 2017-11-05 DOI: 10.51983/arme-2017.6.2.2427
Surjeet Saini, Narender Kumar
In this experimental set up, solar cooker with thermal storage unit was connected to evacuated tube collector through connecting pipes via a low flow rate pump. The design of solar cooker was such that the following fluid transfers its heat to PCM and cooking vessel simultaneously. Commercial grade acetanilide was used as latent heat storage material in the solar cooker. Cooking experiments were conducted during noon and evening with different loads and PCM storage processes were carried out simultaneously. The result include that cooking lunch for a family is possible simultaneously with heat storage along the day. Closing gate valves afterward allows cooking the dinner with the retained heat up to late evening. This expands the applicability of solar cooking and sustains the possibility of all the day around cooking using solar energy with a low inventory cost.
在本实验装置中,带蓄热装置的太阳灶通过连接管通过低流量泵与真空管集热器连接。太阳能炊具的设计是这样的,以下流体将其热量同时传递给PCM和烹饪容器。采用商品级乙酰苯胺作为太阳能炊具的潜热储热材料。烹饪实验分别在中午和晚上进行,不同的负荷和PCM储存过程同时进行。研究结果包括,为一个家庭烹饪午餐的同时,可以在一天中储存热量。关闭闸阀之后,可以用保留的热量烹饪晚餐,直到深夜。这扩大了太阳能烹饪的适用性,并以低库存成本维持了全天使用太阳能烹饪的可能性。
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引用次数: 1
Synthesis, XRD & SEM Studies of Heusler Ferromagnetic Shape Memory Alloys Heusler铁磁形状记忆合金的合成、XRD和SEM研究
Pub Date : 2017-11-05 DOI: 10.51983/arme-2017.6.2.2431
S. V. Dhanal, S. A. Kori, V. G. Akkimardi, M. S. Mokashi
Ferromagnetic Shape Memory Alloys (FSMAs) are the materials that responds to externally applied magnetic field similar to magnetostriction, but with vastly greater strain. These alloys are becoming an important element of sensor and actuator materials due to their large magnetic-field-induced strain and shape memory effect in recent years. In this work the structural parameters of relatively new Ni-Mn-Al and Ni-Mn-Sn Heusler FSMA were observed by X-Ray diffraction (XRD).In order to investigate the morphologies and microstructures of the inter layer matrix and filler of the prepared alloy, Scanning Electron Microscope (SEM) wasused for the observations. The alloy samples were prepared using vacuum arc melting technique. The average crystalline size was determined by using Scherrer equation.
铁磁形状记忆合金(fsma)是一种响应外部磁场的材料,类似于磁致伸缩,但具有更大的应变。近年来,这些合金由于具有较大的磁致应变和形状记忆效应而成为传感器和执行器材料的重要组成部分。本文用x射线衍射(XRD)观察了较新的Ni-Mn-Al和Ni-Mn-Sn Heusler FSMA的结构参数。利用扫描电子显微镜(SEM)对制备的合金层间基体和填料的形貌和组织进行了观察。采用真空电弧熔炼技术制备合金样品。用Scherrer方程确定了平均晶粒尺寸。
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引用次数: 1
Experimental Study of Double Slope Solar Distillation with and without Effect of Latent Thermal Energy Storage 有无潜热蓄热作用的双斜面太阳蒸馏试验研究
Pub Date : 2017-11-05 DOI: 10.51983/arme-2017.6.2.2430
A. Husainy, Omkar S. Karangale, Vinayak Y. Shinde
Hygienic drinkable water is a basic necessity for man along with food and air. Fresh water is also required for agricultural and industrial purposes. Most water sources are contaminated by industrial waste, sewage and agricultural runoff. The higher growth rate in world population and industries resulted water in a large acceleration of demand for fresh water.The natural source can meet a limited demand and this leads to acute shortage of fresh water. Hence, there is an issue to essentially treat the salt and contaminated into purified water. There are several methods to convert impure water into potable water for drinking, but out of them thermal method is economically viable. In this paper experimentation were carried out on two different setups of double slope single basin solar still with and without thermal energy storage by phase change material.
卫生的饮用水与食物和空气一样是人类的基本必需品。农业和工业也需要淡水。大多数水源受到工业废水、污水和农业径流的污染。世界人口和工业的较高增长率导致对淡水的需求大大加速。自然水源只能满足有限的需求,这就导致了淡水的严重短缺。因此,有一个问题,基本上是处理盐和污染成纯净水。有几种方法可以将不纯净的水转化为可饮用的饮用水,但其中热法在经济上是可行的。本文对两种不同装置的双坡单盆太阳能蒸馏器进行了相变材料蓄热和不蓄热的实验研究。
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引用次数: 6
Vertical Axis Wind Turbine 垂直轴风力涡轮机
Pub Date : 2017-11-05 DOI: 10.51983/arme-2017.6.2.2434
M. D. Raj Kamal, P. Harish Krishna, G. Jagadeesh Babu, Ashwin Suresh, K. Baskar
The main objective of this paper is to design the vertical axis wind turbine. The design of the turbine will include the study of various vertical axis wind turbines. Various wind turbines converting wind energy to a rotary motion have been already suggested and practiced. Among them, the horizontal axis wind turbine is required to have the propeller rotating disk always rightly aligned with the wind direction, whereas the vertical axis wind turbine is Omni-directional, is not influenced at all by the wind direction and is better in respect of the configuration and operation.
本文的主要目的是设计垂直轴风力发电机组。涡轮机的设计将包括对各种垂直轴风力涡轮机的研究。将风能转化为旋转运动的各种风力涡轮机已经提出并付诸实践。其中,水平轴风力机要求螺旋桨旋转盘始终与风向正对,而垂直轴风力机是全方位的,完全不受风向的影响,在配置和运行方面都更好。
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引用次数: 0
期刊
Asian Review of Mechanical Engineering
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