Trends in machine design (vol1, issue1) by STM Journals Publication

Trends in Machine Design Jan - April 2014

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Trends in Machine Design Focus and Scope Covers ? Kinematics of Machines ? CAD/CAM/CAE technology ? CAD/CAM/CAE technology ? Mechatronic design ? Machine manufacturing processes ? Machine learning algorithms

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Srinivasu Gangisetti

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Arindam Majumder Assistant Professor,National Institute of Technology, Agartala.

Dilip Datta Head,Mechanical Engineering Tezpur University, Assam.

Dinesh Kumar Assistant Professor, Department of Mechanical Engineering, Malaviya National Institute of Technology, Jaipur.

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LA Kumaraswamidhas Associate Professor, Department of Mechanical Engineering and Mining Machinery Engineering, Indian School of Mines Dhanbad, India.

Manju Singh Principal Scientist Central Mechanical Engineering Research Institute Durgapur, India.

Rajeev Jain, Head Mechanical Engineering Department, Kalaniketan Polytechnic College Jabalpur India.

S K Kakoty Professor Mechanical Engineering, Indian Institute of Technology, Guahati.

Sanjivi Arul Associate Professor, Mechanical Engineering, Amrita School of Engineering, Coimbatore.

Shubhankar Bhowmick Assistant Professor, Mechanical Engineering, National Institute of Technology, Raipur, India.

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STM JOURNALS

I take the privilege to present the print version for the [Volume 1 Issue (1)] of Trends in Machine Design. The intension of TMD is to create an atmosphere that stimulates creativeness, research and growth in the area of Machine Design. The development and growth of the mankind is the consequence of brilliant Research done by eminent Scientists and Engineers in every field. TMD provides an outlet for Research findings and reviews in areas of Machine Design found to be relevant for National and International recent developments & research initiative. The aim and scope of the Journal is to provide an academic medium and an important reference for the advancement and dissemination of Research results that support high level learning, teaching and research in the domain of Machine Design. Finally, and Authors for their continued support and invaluable contributions and suggestions in the form of authoring I express my sincere gratitude and thanks to our Editorial/ Reviewer board write ups/ reviewing and providing constructive comments for the advancement of the journals. With regards to their due continuous support and co-operation, we have been able to publish quality Research/Reviews findings for our customers base. I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.

Dr. Archana Mehrotra Director STM Journals

Trends in Machine Design

Contents

1. The Effect of using Grease on the Surface Roughness of Aluminum 1100 Sheet during the Single Point Incremental Forming Process Sami Ali Nama, Nasri S. M. Namer, Sherwan M. Najm

2. Characterization of Materials used In Laser Engineered Net Shaping through Microstructure Analysis: A Review Mantrala K Mallik, Srinivasa Rao Ch., Kesava Rao V.V.S.

3. Evaluating the Mechanical Behaviors of Acacia Nilotica Reinforced Polymer Composite with and without Coupling Agent Ganesh M., Retna Siga E, Livingston T

Trends in Machine Design Volume 1, Issue 1 www.stmjournals.com

The Effect of using Grease on the Surface Roughness of Aluminum 1100 Sheet during the Single Point Incremental Forming Process Sami Ali Nama, Nasri S. M. Namer*, Sherwan M. Najm Dies & Tools Technology Engineering Department, Technical College, Baghdad, Iraq Abstract Incremental forming is a sheet metal forming technique in which a uniform sheet is plastically deformed through the progressive action of a rounded tool. The movement of the tool is governed by a CNC machine. By this way the tool locally deforms the sheet through pure stretching deformation. In this research incremental forming experiments were carried out on Aluminum 1100 sheets to form a cone shape. Roughness was studied by varying the input parameters (tool speed, feed rate and lubricant). From the study, it was found that the surface roughness was improved as tool speed and feed rate increases. Also it was found that using grease improve the surface roughness compared with using the coolant oil.

Keywords: Incremental forming, tool path, tool speed, federate, lubricant

Trends in Machine Design Volume 1, Issue 1 www.stmjournals.com

Characterization of Materials used In Laser Engineered Net Shaping through Microstructure Analysis: A Review Mantrala K Mallik1*, Srinivasa Rao Ch.2, Kesava Rao V.V.S.2 1

Department of Mechanical Engineering, Vasireddy Venkatadri Institute of Technology, Guntur, India 2 Department of Mechanical Engineering, Andhra University College of Engineering, Visakhapatnam, India

Abstract Laser Engineered Net Shaping is a well developing layered manufacturing method in which the metal powders are used to deposit on a substrate with the help of laser. Due to continuous and repeated melting and solidification, the properties of the metals may change by the end of preparation of the components. Microstructure analysis is one of the characterization techniques to evaluate the behavior of the metals after deposition. Many useful materials like Ti-6Al-4V, Co-Cr-Mo, Stainless Steels etc. were characterized by microstructure analysis using Scanning Electron Microscopy and the results were published. The current paper deals with the study of such works produced by the researchers in characterizing the aforementioned materials. The study revealed that the LENS process is capable of producing components that are compatible with base material and sometimes superior, if the process parameters are optimized and proper heat treatment is applied when required.

Keywords: Layered Manufacturing, laser engineered net shaping, microstructure, Ti6Al-4V, Co-Cr-Mo.

Trends in Machine Design Volume 1, Issue 1 www.stmjournals.com

Evaluating the Mechanical Behaviors of Acacia Nilotica Reinforced Polymer Composite with and without Coupling Agent Ganesh M.1*, Retna Siga E1, Livingston T2 1

Mechanical Department, Lord Jegannath College of Engineering and Technology, India 2 Mechanical Department, PSN Engineering College, India

Abstract Over the last thirty years composite materials, plastics and ceramics have been the dominant emerging materials. The volume and number of applications of composite materials have grown steadily, penetrating and conquering new markets relentlessly. Modern composite materials constitute a significant proportion of the engineered materials market ranging from everyday products to sophisticated applications. While composites have already proven their worth as weight-saving materials. Attractive composite components have resulted in several innovative manufacturing techniques currently being used in the composites industry. In this work, Acacia Nilotica has been characterized for their mechanical properties with the various volume ratio of fibermatrix compositions. The volume ratios that taken into count for the fabrication are 20–80%, 30–70%, 40–60% fiber-matrix. The hand layup method is opted for the fabrication of the composite. The coupling agent can improve the mechanical properties without any compromisation in the composition of the fiber content. The experimental work shows that the tensile strength was increased by 25–30% and flexural strength was increased by 15–20%. Thus by adding the coupling agent to a natural fiber the strength can improve with the same composition. And also the SEM Analysis indicates that the materials are uniformly distributed.

Keywords: Acacia nilotica, particulate composites, tensile test, flexural test, impact test, wca-with coupling agent, woca-without coupling agent