Journal of Mechanical Engineering and Automation 

About: Journal of Mechanical Engineering and Automation is an academic journal. The journal publishes majorly in the area(s): Bearing (mechanical) & Nusselt number. It has an ISSN identifier of 2163-2405. It is also open access. Over the lifetime, 190 publications have been published receiving 799 citations.

Vehicle Vibration Response Subjected to Longwave Measured Pavement Irregularity

Abstract: The motivation of this work is to develop a spectral method to deal with the vehicle vibration response when subjected to a longwave measured pavement irregularity. For this purpose, the vehicle model vibration is correlated in the frequency domain with the spectral density function of the pavement irregularity, to achieve the system spectral transfer function. Vehicle transfer function and spectral pavement irregularity results are treated in the frequency domain to obtain the vehicle frequency response due to a longwave road evenness input. The results show that, at 120 km/h in an asphalt pavement with ondulation, the first vehicle vibration mode has a significant movement enlargement, due to the pavement irregularity signature, causing passenger vibrational discomfort and identifying location for maintenance.

Critical Parameters Effecting the Rapid Prototyping Surface Finish

Abstract: A component can be manufactured in several ways. Rapid Prototyping technique is one among the material adding manufacturing process, building up its unique potential in the present scenario. This technique helps manufacture a product from the basic design of the component, thus optimizing the iterative product development process time and creating geometrically complex parts to precise dimensions. In the Rapid Prototyping process, surface finish is critical as it can affect the part accuracy, reduce the post-processing costs and improve the functionality of the parts. This paper presents an ex- perimental design technique for determining the optimal surface finish of a part built by varying Build Orientation, Layer Thickness and keeping other parameters constant using the Fused Deposition Modeling (FDM) process. The design inves- tigates the effect of these parameters on the surface finish. Experiments were conducted using a fractional factorial design with two levels for Layer Thickness and three levels for Build Orientation factor. The results are statistically analyzed to determine the significant factors and their interactions. The significant factors, their interactions and the optimum settings are proposed.

Modeling the Effects of Tool Probe Geometries and Process Parameters on Friction Stirred Aluminium Welds

Abstract: The weld properties of friction stir welding remains as an area of interest with respect to the effect of tool geometry and process parameters. In the present investigation effort has been made to understand the effect of important welding parameters such as tool rotational speed, traverse speed and probe geometries on various mechanical properties of AA1100 aluminium alloys. Ultimate tensile strength, percentage of elongation and hardness were determined experimentally for this purpose. Analysis of variance (ANOVA) was used to observe the main effect of above mentioned parameters on mechanical properties. A regression relationships were developed to predict each output. The experimental and predicted values from the mathematical model were in close agreement.

A Review on Tool Wear Monitoring System

Abstract: Tool wear is a major problem encountered in manufacturing industry during machining operations. A substantial work on online tool wear monitoring system has been reported in order to improve the quality of machining parts, to reduce the machine damage, and cost of machining. Researchers have made an effort to model the tool life, tool wear, and tool wear progression during hard turning by considering abrasion an adhesion and /or diffusion wear mechanisms. Experimental models (statistical-based), numerical attempts (Finite element method using Abaqus), and analytical based models are widely reported for soft and hard turning. This paper presents a review of studies on tool wear modeling as an attempt to develop tool condition monitoring system.

Numerical Model to Study of Contact Force in A Cylindrical Roller Bearing with Technical Mechanical Event Simulation

Abstract: In this paper, the “two body abrasive wear characteristics” have been studied for the cylindrical samples of pure epoxy and chemical treated coir fibre filled epoxy polymer composites of the size of 10 mm and 32 mm at different sliding speeds in multiphase conditions. The wear characteristics have been estimated by following two parameters, the normal load and sliding speed in a single pin-on-disc wear testing machine. It has been found that the wear characteristics decreases by increasing the sliding speed in both the cases / samples, pure epoxy and treated coir fibre filled epoxy respectively. Finally, we get that the rate of abrasion for composite is slightly less as compared to pure epoxy polymer composites.