Simultaneous Scheduling of Machines and AGVs in Flexible Manufacturing System with Minimization of Tardiness Criterion

AbstractOptimum Automated Guided Vehicles (AGVs) operation plays a crucial role in improving the performance of Flexible Manufacturing System (FMS). One of the main elements in the implementation of AGV is task scheduling. This will enhance the productivity, Minimize delivery cost and optimally utilize the entire fleet. This enhance article Deals with Binary particle swarm Vehicle Heuristic Algorithm (BPSVHA) for simultaneous Scheduling of machines and AGVs adopting Rebust factor function and minimization of mean tardiness. The method is found to provide better solutio

Influence of Rotary Assisted Electrical Discharge Machining of 17-4PH StainlessSteel Using Taguchi Technique

The current investigation has study the material removal rate, surface roughness and electrode wear rate in rotary toolassisted EDM of 17-4 PH stainless steel. 17-4 PH SS has widely used in aerospace, marine, nuclear, and chemicalprocessing due to their characteristic high strength to weight ratio and corrosion resistance properties. This paper primarilyfocuses on enhancing the flushing efficiency of dielectric fluid in the EDM process and to improve the machiningperformance characteristics. A custom designed rotating electrode attachment has fabricated and used to assist with theEDM process. The experiments are designed and planned using Taguchi L27 Orthogonal array technique.The experimentsare planned for four input factors and each parameter is varied at three levels. Current, pulse on time, pulse off time andElectrode Rotation Speed are input factors. ANOVA test is conducted to find out the significance of factors and theirpercentage contribution on the performance characteristics like Material Removal Rate, Surface Roughness and ElectrodeWear Rate. The resultsconcluded that Electrode Rotation Speed has more influence on Material Removal Rate and ElectrodeWear Rate. An individual percentage and interaction percentage of parameters from ANOVA confirm that their effectsare higher in Material Removal Rate (MRR) compared to Surface roughness (Ra) and Electrode Wear Rate (EWR). Finally,surface morphology studies revealed that significantly less cracks and voids had formed on the EDM’ed sample at optimumcondition

Influence of Rotary Assisted Electrical Discharge Machining of 17-4PH Stainless Steel Using Taguchi Technique

801-808The current investigation has study the material removal rate, surface roughness and electrode wear rate in rotary tool assisted EDM of 17-4 PH stainless steel. 17-4 PH SS has widely used in aerospace, marine, nuclear, and chemical processing due to their characteristic high strength to weight ratio and corrosion resistance properties. This paper primarily focuses on enhancing the flushing efficiency of dielectric fluid in the EDM process and to improve the machining performance characteristics. A custom designed rotating electrode attachment has fabricated and used to assist with the EDM process. The experiments are designed and planned using Taguchi L27 Orthogonal array technique.The experiments are planned for four input factors and each parameter is varied at three levels. Current, pulse on time, pulse off time and Electrode Rotation Speed are input factors. ANOVA test is conducted to find out the significance of factors and their percentage contribution on the performance characteristics like Material Removal Rate, Surface Roughness and Electrode Wear Rate. The resultsconcluded that Electrode Rotation Speed has more influence on Material Removal Rate and Electrode Wear Rate. An individual percentage and interaction percentage of parameters from ANOVA confirm that their effects are higher in Material Removal Rate (MRR) compared to Surface roughness (Ra) and Electrode Wear Rate (EWR). Finally, surface morphology studies revealed that significantly less cracks and voids had formed on the EDM’ed sample at optimum condition

Enactment of Fiber Reniforced Hybrid Epoxy Composite for Passenger Car Bumper Beam

These days, fuel economy and emission petrol control of passenger vehicles are two critical challenges. The most effective approach to improve fuel efficiency with the front and rear parts of a vehicle are equipped with bumpers, which are crucial in low-speed collisions because they serve as low-speed energy absorbers. Sacrificing safety is to employ fiber reinforced composite materials in the body of cars. The fascia is a major element that is designed to absorb abrupt or impact loads that are imparted to automobiles either purposefully or accidentally. The objective for the incorporation of the bumper is when a collision suspends a vehicle to abrupt or impact loads, it is employed to absorb crash energy and is beneficial again for safety of the driver passengers as well as for the vehicle. In this work, a novel composite bumper beam which will be made of hybrid (natural and synthetic) fiber epoxy composite material embedded with multi walled carbon nanotubes to improve the bending stiffness. The major goal of the current investigation is to determine the impact of nano carbon tubes on the mechanical characteristics of jute/glass/epoxy hybrids and banana/glass/epoxy hybrids. The samples manufactured using a hand layup method and a variety of stacking sequences. Experimentations for three quasi-static 3-point bending test as well as fracture toughness will be conducted. Also, water absorption capability in reinforced materials will be measured. Based on the results, the bumpers are proposed for the Indian passenger cars