i-manager's Journal on Mechanical Engineering (JME)


Volume 11 Issue 1 November - January 2021

Research Paper

Interpreting Preferred Values for the Input Parameter Discharge Current in Taguchi Method

B. S. V. Ramarao*
Department of Mechanical Engineering, Pragati Engineering College (A), Kakinada, Andhra Pradesh, India.
Ramarao, B. S V. (2021). Interpreting Preferred Values for the Input Parameter Discharge Current in Taguchi Method. i-manager's Journal on Mechanical Engineering, 11(1), 1-7. https://doi.org/10.26634/jme.11.1.17608

Abstract

Selection of parameters and its range is quite important to proceed with the major experimentation in research work especially when we use Taguchi method. In any machine, few parameters should be considered as static and few as dynamic according to the limitations or ranges of the values of parameters in that machine. After the completion of selection of parameters, the immediate next task is to select the range of values. Along with the study of the literature, there should be one procedure or base to select the correct range of values in the set. Here, in this paper the selection of range of values of discharge current is discussed. Out of the four input parameters which are proposed to be used in the major/main experiment, three parametric values are assumed as static and five experiments were conducted to determine the range for the fourth parameter. As a result of five experiments, output parameters MRR and SR were found out for the five set of input values. Modified TOPSIS has been applied on these observations and better values of DC were found out with higher relative closeness in the method, to proceed with the main experiment using Taguchi.

Research Paper

Experimental Investigation of IC Engine using Pongamia Biodiesel Blended with Cerium Oxide Nanoparticles

R. Sam Sukumar* , yash**, A. Gopala Krishna ***
*,*** Department of Mechanical Engineering, Jawaharlal Nehru Technological University Kakinada, Kakinada, Andhra Pradesh, India.
** Department of Mechanical Engineering, Visakha Institute of Engineering and technology, Visakhapatnam, Andhra Pradesh, India.
Sukumar, R. S., Rao, M. M., and Krishna, A. G. (2021). Experimental Investigation of IC Engine using Pongamia Biodiesel Blended with Cerium Oxide Nanoparticles. i-manager's Journal on Mechanical Engineering, 11(1), 8-15. https://doi.org/10.26634/jme.11.1.17683

Abstract

Fossil fuels, which have fueled the world's industrial economies for decades, are now regarded as having corrosive environmental consequences and are a non-renewable natural resource. Policymakers all over the world are working to find the most effective ways to drastically minimize the use of fossil fuels. According to researchers, biofuels such as biodiesel are a feasible option. Pongamia biodiesel blends of B20 with CeO2 as an additive in various proportions were used as fuel in this analysis. CeO2 is prepared by coprecipitation method and characterized by UV visible studies, SEM, Fluorescence and Intensity distribution studies. Testing is carried out at different loads on the Kirloskar TV1 single-cylinder four-stroke diesel engine, at a constant speed of 1500 rpm. The output of the engine and the emission parameters are tested. The results indicated that adding nanoparticles to fuel had a positive impact, lowering BSFC compared to nonadditive fuel. CO and HC emissions were found to be lower in nano additive bio-diesel blends than in pure bio-diesel blends. Unlike the fuel blends, the B20 blend with 50 mg CeO2 provided optimal efficiency while lowering emissions.

Research Paper

CFD Analysis on Different Elbow Draft Tubes

Jithendra Sai Raja Chada* , Akhil Yuvaraj Manda **, Phani Bhaskar Anusuri ***
*-*** Department of Mechanical Engineering, Pragati Engineering College, Kakinada, Andhra Pradesh, India.
Chada, J. S. R., Manda, A. Y., and Anusuri, P. B. (2021). CFD Analysis on Different Elbow Draft Tubes. i-manager's Journal on Mechanical Engineering, 11(1), 16-21. https://doi.org/10.26634/jme.11.1.17643

Abstract

The elbow pipe is a common and essential component in terms of the transmission of a fluid, be it a working fluid or a non – working fluid. The purpose of the presented work is to conceptualize an optimal design of an elbow pipe with suitable modifications, to contribute to higher rates of velocities. The base elbow pipe geometry is modified with draft tube of different shapes namely square, ellipse and circular. The modified geometries are simulated, evaluated and compared to the base pipe geometry in terms of the velocity and pressure lineation using the SolidWorks software. The results depicted ideal values for model M3 with draft tube of ellipse shape at an inlet mass flow rate of 1.8 kg/s. The results when compared to the linear regression analysis generated, were found to be in an appreciable correlation with each other.

Review Paper

Trending Applications and Mechanical Properties of 3D Printing: A Review

Rakesh Kumar* , Rajesh Sharma **, Santosh Kumar ***, Naman Goyal ****
*-**** Department of Mechanical Engineering, Chandigarh Group of Colleges - Chandigarh College of Engineering, Mohali, Punjab, India.
Kumar, R., Sharma, R., Kumar, S., and Goyal, N. (2021). Trending Applications and Mechanical Properties of 3D Printing: A Review. i-manager's Journal on Mechanical Engineering, 11(1), 22-39. https://doi.org/10.26634/jme.11.1.17627

Abstract

Mass customization, ability to manufacture complicated shapes, material complexity, fast prototyping, no need of cutting tools, coolants and other auxiliary resources are the key advantages of 3D printing. This emerging technology enables to fabricate physical component directly from the CAD data by deposition of material in layer fashion without wastage. Hence, in this paper a comprehensive review of the dominant 3D printing techniques, evolution and their trending applications is carried out. In addition, the applications of 3D printing in medical, automotive, fabric and fashion, electronic, architecture, aerospace, food, etc. are discussed. Overall, this review paper discussed the literatures on mechanical properties of distinct additive manufacturing (AM) techniques, trending applications, future scope and challenges in the area of 3D printing.

Case Study

A Case Study on the Productivity Enhancement of Discrete Part Manufacturing Process Through Value Stream Mapping

M. Prakash * , M. Manikandan**, Milon Selvam Dennison***, Rajasekaran R.****
*-** Department of Mechanical Engineering, Karpagam Academy of Higher Education, Tamilnadu, India.
*** Department of Mechanical Engineering, Kampala International University, Western Campus, Uganda.
**** Department of Mechanical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Tamilnadu, India.
Prakash, M., Manikandan, M., Dennison, M. S., and Rajasekaran, R. (2021). A Case Study on the Productivity Enhancement of Discrete Part Manufacturing Process Through Value Stream Mapping. i-manager's Journal on Mechanical Engineering, 11(1), 40-48. https://doi.org/10.26634/jme.11.1.17551

Abstract

Continuous utilization of automated machine devices in the fabricating sector requires standard profitability by eliminating the bottlenecks through lean tools. A few manufacturers attempted to bring down costs by diminishing assembling costs, where they either execute lean. In lean, Value Stream Mapping (VSM) is the best strategy that can be utilized to diminish lead time or potentially improve productivity. VSM can prompt items having reliable throughput, maybe even reliably in great quality and reducing the inventory. This project work is adopted in a foundry with the main objective of increasing the productivity of wheel production by using VSM. At present, the VSM component travels nearly 150 km for fettling, heat treatment (HT) and pre-machining and it takes 144 hours to complete the process. Through VSM, bottle neck areas were identified and non-value-added activities were also identified. Implementing an integrated production system eliminates the non-value-added activities by increasing the efficiency of the plant by 15 %.