Dr. Sarravanan Rathinasamy | SAVEETHA UNIVERSITY (original) (raw)

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Papers by Dr. Sarravanan Rathinasamy

Research paper thumbnail of INTEGRATING SIMULATION AND OPTIMIZATION TO SCHEDULE BATCHES IN PARALLEL HYBRID FLOW SHOP

Nowadays manufacturing organizations produce their products in a high variety with low volume to ... more Nowadays manufacturing organizations produce their products in a high variety with low volume to meet the requirements of a variety of customers by using existing resources. Scheduling is the task of allocation of resources over time to process jobs. The importance of good scheduling strategies in production environments is obvious. The need to respond to market demands quickly and to run plants efficiently gives rise to complex scheduling problems in all but the simplest production environments. This research is motivated by an operation scheduling for an automobile spare manufacturing plant. The Problem complexity is, male and female components of assemblies flow for processing in two parallel hybrid flow shop with inseparable nature, the preprocessing time is stochastic nature, storage space between the work centers are limited. The objective is not only to minimize the completion time, but also optimize the resource utilization and average queue length. Simulation modeling and analysis used to analyze the behavior of this complex production environment and an algorithm suggested for scheduling any number of batches. In the case study, the algorithm outperforms and yielded best solution and the suggested schedule reduced completion time drastically.

Research paper thumbnail of Sequencing and scheduling of nonuniform flow pattern in parallel hybrid flow shop

The International Journal of Advanced Manufacturing Technology, 2009

This work is motivated by a practical need for operation scheduling for an automobile manufacturi... more This work is motivated by a practical need for operation scheduling for an automobile manufacturing industry involved with machining of different types of vibration dampers. This work aims to minimize the makespan time for relatively different types of vibration dampers with nonuniform flow pattern through a two-parallel inseparable hybrid flow shop. A mathematical model has been developed for simulation of the hybrid flow line performance. The simulation provides data relating to completion time, queue status, and machine utilization of various schedules. After analysis and evaluation of different possible schedules, simultaneous processing of two types of dampers is suggested. The model was evaluated for nonuniform flow pattern for any number of types of dampers for different sets, and a parallel solution based on completion time is suggested.

Research paper thumbnail of Synthesis and Characterization of Mechanical Properties and Wire Cut EDM Process Parameters Analysis in AZ61 Magnesium Alloy + B4C + SiC

Materials

Wire Cut Electric Discharge Machining (WCEDM) is a novel method for machining different materials... more Wire Cut Electric Discharge Machining (WCEDM) is a novel method for machining different materials with application of electrical energy by the movement of wire electrode. For this work, an AZ61 magnesium alloy with reinforcement of boron carbide and silicon carbide in different percentage levels was used and a plate was formed through stir casting technique. The process parameters of the stir casting process are namely reinforcement %, stirring speed, time of stirring, and process temperature. The specimens were removed from the casted AZ61 magnesium alloy composites through the Wire Cut Electric Discharge Machining (WCEDM) process, the material removal rate and surface roughness vales were carried out creatively. L 16 orthogonal array (OA) was used for this work to find the material removal rate (MRR) and surface roughness. The process parameters of WCEDM are pulse on time (105, 110, 115 and 120 µs), pulse off time (40, 50, 60 and 70 µs), wire feed rate (2, 4, 6 and 8 m/min), and c...

Research paper thumbnail of Integrating simulation and optimization to schedule a hybrid flow shop with maintenance constraints

Computers & Industrial Engineering, 2004

Research paper thumbnail of BEG composite for leaf spring applications

A Leaf spring is a simple form of spring commonly used for the suspension in wheeled vehicles. We... more A Leaf spring is a simple form of spring commonly used for the suspension in wheeled vehicles. Weight reduction is the major problem faced by many automobile industries. Weight reduction can be achieved by designing new materials, sophisticated manufacturing processes. Due to increasing competition and innovation in recent decade's automobile industries shown interest on replacing conventional steel leaf spring with fiber reinforced composite leaf spring which has advantages as higher strength to weight ratio, higher stiffness, high impact energy absorption and lesser stresses. Selection of constituents for the composites is based on the type of application, availability, strength required and cost of material. In this work an attempt is made to develop a natural and synthetic fiber reinforced hybrid composite material with optimum properties so that it can replace the existing synthetic fiber reinforced composite material and conventional steel in automobile leaf spring. Banana and E-glass woven fabrics are used as reinforcements and Epoxy resin LY556 and Hardener HY 951 is used as the matrix material. The CAD models of Leaf spring are prepared in CATIA V5 R20 and imported ANSYS 15.0 workbench where finite element analysis (FEA) is performed. This study gives a comparative analysis between steel (65Si7) leaf spring and Banana/E glass reinforced Epoxy leaf spring. The hybrid composite leaf spring is found to have up to 81% weight reduction, lesser cost, lesser stresses, higher strain energy.

Research paper thumbnail of INTEGRATING SIMULATION AND OPTIMIZATION TO SCHEDULE BATCHES IN PARALLEL HYBRID FLOW SHOP

Nowadays manufacturing organizations produce their products in a high variety with low volume to ... more Nowadays manufacturing organizations produce their products in a high variety with low volume to meet the requirements of a variety of customers by using existing resources. Scheduling is the task of allocation of resources over time to process jobs. The importance of good scheduling strategies in production environments is obvious. The need to respond to market demands quickly and to run plants efficiently gives rise to complex scheduling problems in all but the simplest production environments. This research is motivated by an operation scheduling for an automobile spare manufacturing plant. The Problem complexity is, male and female components of assemblies flow for processing in two parallel hybrid flow shop with inseparable nature, the preprocessing time is stochastic nature, storage space between the work centers are limited. The objective is not only to minimize the completion time, but also optimize the resource utilization and average queue length. Simulation modeling and analysis used to analyze the behavior of this complex production environment and an algorithm suggested for scheduling any number of batches. In the case study, the algorithm outperforms and yielded best solution and the suggested schedule reduced completion time drastically.

Research paper thumbnail of Sequencing and scheduling of nonuniform flow pattern in parallel hybrid flow shop

The International Journal of Advanced Manufacturing Technology, 2009

This work is motivated by a practical need for operation scheduling for an automobile manufacturi... more This work is motivated by a practical need for operation scheduling for an automobile manufacturing industry involved with machining of different types of vibration dampers. This work aims to minimize the makespan time for relatively different types of vibration dampers with nonuniform flow pattern through a two-parallel inseparable hybrid flow shop. A mathematical model has been developed for simulation of the hybrid flow line performance. The simulation provides data relating to completion time, queue status, and machine utilization of various schedules. After analysis and evaluation of different possible schedules, simultaneous processing of two types of dampers is suggested. The model was evaluated for nonuniform flow pattern for any number of types of dampers for different sets, and a parallel solution based on completion time is suggested.

Research paper thumbnail of Synthesis and Characterization of Mechanical Properties and Wire Cut EDM Process Parameters Analysis in AZ61 Magnesium Alloy + B4C + SiC

Materials

Wire Cut Electric Discharge Machining (WCEDM) is a novel method for machining different materials... more Wire Cut Electric Discharge Machining (WCEDM) is a novel method for machining different materials with application of electrical energy by the movement of wire electrode. For this work, an AZ61 magnesium alloy with reinforcement of boron carbide and silicon carbide in different percentage levels was used and a plate was formed through stir casting technique. The process parameters of the stir casting process are namely reinforcement %, stirring speed, time of stirring, and process temperature. The specimens were removed from the casted AZ61 magnesium alloy composites through the Wire Cut Electric Discharge Machining (WCEDM) process, the material removal rate and surface roughness vales were carried out creatively. L 16 orthogonal array (OA) was used for this work to find the material removal rate (MRR) and surface roughness. The process parameters of WCEDM are pulse on time (105, 110, 115 and 120 µs), pulse off time (40, 50, 60 and 70 µs), wire feed rate (2, 4, 6 and 8 m/min), and c...

Research paper thumbnail of Integrating simulation and optimization to schedule a hybrid flow shop with maintenance constraints

Computers & Industrial Engineering, 2004

Research paper thumbnail of BEG composite for leaf spring applications

A Leaf spring is a simple form of spring commonly used for the suspension in wheeled vehicles. We... more A Leaf spring is a simple form of spring commonly used for the suspension in wheeled vehicles. Weight reduction is the major problem faced by many automobile industries. Weight reduction can be achieved by designing new materials, sophisticated manufacturing processes. Due to increasing competition and innovation in recent decade's automobile industries shown interest on replacing conventional steel leaf spring with fiber reinforced composite leaf spring which has advantages as higher strength to weight ratio, higher stiffness, high impact energy absorption and lesser stresses. Selection of constituents for the composites is based on the type of application, availability, strength required and cost of material. In this work an attempt is made to develop a natural and synthetic fiber reinforced hybrid composite material with optimum properties so that it can replace the existing synthetic fiber reinforced composite material and conventional steel in automobile leaf spring. Banana and E-glass woven fabrics are used as reinforcements and Epoxy resin LY556 and Hardener HY 951 is used as the matrix material. The CAD models of Leaf spring are prepared in CATIA V5 R20 and imported ANSYS 15.0 workbench where finite element analysis (FEA) is performed. This study gives a comparative analysis between steel (65Si7) leaf spring and Banana/E glass reinforced Epoxy leaf spring. The hybrid composite leaf spring is found to have up to 81% weight reduction, lesser cost, lesser stresses, higher strain energy.