Browsing by Author "Devanathan, C."

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    An ANN Approach for Measuring Operational Performance Efficiency in India Post Service Industry
    (Springer Science and Business Media Deutschland GmbH, 2025) Vadivel, S.M.; Khosla, S.; Devanathan, C.; Sequeira, A.H.; Abhinav, A.
    In this study, the authors proposed Artificial Neural Network (ANN) as a decision making tool for India post service operational excellence, Karnataka, southern part of India. Though the concept of lean system bundles has been excellent results in the service sector, implementing in the postal service has been taken up as a new challenge. The performance has been validated based on Lean Service Practices (LSPs), Lean Workplace Environmental Practices (LWEPs), and Lean Social Practices (LSoPs) on Operational Performance (OP). Results can be deriving specific conclusions. As per our expectation, it is observed that ANN gives promising of ranking the decision making units. Here, we have used radial based function model. The expense of implementing lean was around INR 2 lakhs. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
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    Analysis of UNS S31603 ferrous joint made by rotary friction welding
    (Springer, 2024) Senthil Murugan, S.; Girisankar, S.; Devanathan, C.; Kattimani, S.
    This study delves into the effects of employing low friction pressure and high axial penetration during the fabrication of friction-welded joints using UNS S31603 stainless steel. The experiments were conducted using a continuous-drive rotary friction welding machine. Crucially, the research showcases the feasibility of creating robust welds in the metal, surpassing the strength of the parent metal. The resulting weld interfaces were remarkably narrow and well-defined. The mechanical properties of the welded joints, including tensile strength, yield strength, microhardness, impact toughness, and bending/flexural strength, were meticulously evaluated following ASTM standards. The findings indicate that the welded joints exhibited impressive tensile strength, approximately 803 MPa, and withstood a peak load of 52.0 kN. Additionally, these joints demonstrated a maximum elongation of 15.3% and a yield strength of 714.0 MPa. When subjected to bending conditions, similar joints made of UNS S31603 withstood loads of up to 19.0 kN before experiencing crack propagation. Ductility was observed in the fracture mode within the weld region, characterized by the formation of cup and cone necking, highlighting the joints' ductile behaviour. Furthermore, the joint efficiency was calculated to be over 100%. Utilizing these specific parameters, this method resulted in a maximum axial shortening or material loss of approximately 14 mm. © Indian Academy of Sciences 2024.
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    Chennai Apartment’s (BHK) Facility Layout Design and Evaluation Using Genetic Algorithm
    (Springer Science and Business Media Deutschland GmbH, 2025) Vadivel, S.M.; Sankaran, M.; Devanathan, C.; Sequeira, A.H.; Abhinav, A.
    The Apartment 2 or 3 Bedroom, Hall and Kitchen (BHK) layouts are a carefully thought-out method to incorporate home furnishings, family accommodations and extra amenities for maximizing a family member’s pleasure. Based on volume measures and inter-department distances, the flat layout problem (FLP) is an optimization problem that aims to ascertain the form and placement of different departments within a layout. One of the main techniques now employed for the optimization of these flat layouts is the CRAFT algorithm. The objective is to use this method to analyze and evaluate the many modular flat layouts that have been offered. Lowering the layout’s overall cost is the aim. The distance between the departments and the flow of humans will determine this. Additionally, an effort has been made to use GA to optimize the layout. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
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    Modular Kitchen Layout Design Using AHP Method – An Indian Case Perspective
    (Springer Science and Business Media Deutschland GmbH, 2024) Vadivel, S.M.; Suganya, P.; Devanathan, C.; Sequeira, A.H.; Abhinav, A.
    This study uses the AHP technique to assess and choose the best facility layout based on cooking practices, work environment, and ergonomics (anthropometric) factors. This study will be beneficial in determining ways to minimize the cooking time in light of facility layout changes. We initially developed four logical layouts based on the survey, which were approved by all family members, neighbors, relations, friends, and working women in the apartment to be evaluated under various performance layout schemes. Four alternative layouts, three performance criteria were taken into consideration in this Facility Layout Design (FLD) problem. The analysis of the FLD was conducted in Park Avenue, Vijay Shanthi apartments, Chennai, Southern India. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.