This paper investigates the mechanical properties of polymer composites reinforced with natural fibers - banana, coconut sheath and jute. Natural fibers which are usually discarded away as agricultural waste have a good potential of being used as reinforcements. Epoxy resin is used as the matrix. The fibers are treated in alkali solution and the composites are fabricated by hand lay-up method. The fabricated specimens are tested for their mechanical properties according to ASTM standards. The potential to use these natural fiber composites in various automobile applications is analyzed. These natural fiber composites can be used to make various automobile accessories. The use of such green materials involves lesser cost and energy requirements. Natural fiber composites. being less dense, can be used to manufacture lightweight parts.

In this paper, a finite element model has been developed to predict the effect of residual stress induced in the work material during multiple pass turning of AISI 4340 steel. Chip morphology and force variation during machining are also quantified using the FE model. Finite element model was developed using arbitrary Lagrangian-Eulerian formulation along with Johnson-Cook material model and Johnson-Cook damage model. The finite element model developed in this study was validated experimentally by studying the chip morphologogy and cutting force variation during the machining. Results indicate that there is good correlation existing between numerical results and experimental results.

This paper presents the study which was intended to identify the optimum geometries for different operating conditions of a Coanda bases Fluidic Thrust vectoring using ACHEON nozzle (Aerial Coanda High Efficiency Orienting Nozzle). This computational study was done utilising the software ANSYS. The study is aimed at optimising the Coanda surface by identifying the most appropriate geometry of the Coanda surface for different operating conditions. The radius of curvature of the coanda surface has been modified for different studies and also different levels of truncation of the coanda surface has also been done. In this study a variation in the radius is from 52.73 mm to 62.67mm.

Machining simulation is a primary research area all around the world. Many researchers are attempting to understand the underlying principles of machining. Earlier research has started with orthogonal machining then slowing is now progressing into oblique machining. Even though extensive research has been carried out in the field of machining and its allied areas, still the process of understanding the nuances of the machining processes is underway. The research is happening on the theoretical and experimental front. Numerical simulation has helped the researchers in understanding the machining processes within a quick duration and it is to a certain extent reliable. Here the authors of the work have tried to outline the procedure and the method involved in Finite element simulation of the machining processes. In the present work, commercially available software is used for numerical simulation purposes. The machining purposes considered for the research work is drilling process.

A FEM simulation study was carried out to investigate the influence of the rolling parameters on the rolling process. Using commercial FEM software, ABAQUS, a number of cases were studied. In this paper, a two-dimensional Elastic-plastic finite element model to simulate the cold rolling of thick strip with different roll angular velocity and roll diameter models is described. The angular velocity of the rigid rolls ranged from 30 to 480 revolutions per minute (r.p.m.) and the rigid roll diameter ranged from 100 to 300 mm. The initial feeding speed of the plate and friction was kept constant, thus causing a slip between the plate and the roll surfaces. The main interest of this study is to see whether the speed of the rolls and the diameter of the rolls have any influence on the contact pressure and the residual stress in cold rolling process. The roll speed is an easily controlled operational parameter which may be used to enhance the process and the quality of the final products by changing the roller diameter and see the effect of stress and contact pressure on the thick plates strip is new one

In this paper, a detailed study has been made at an auto ancillary unit to prioritise the jobs in a press shop which accommodates 170 types of jobs and 27 press machines with different order quantities. The main objective of this work is to develop a simulation model of the press shop to study the performance measures such as lead-time, WIP, machine utilisation, and queue-related statistics and to develop an effective job priority system which improves the performance measures of the press shop. A novel analytic hierarchy process (AHP)-based priority dispatching rule is presented in this study by assigning weights to the factors such as due date, production volume and processing time. The proposed AHP-based priority rule is implemented in the proposed simulation model and it is found to be effective in improving the most of the performance measures considered in this study.