Browsing by Author "Kota, Srinivas"

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ACLODS – A Holistic Framework for Environmentally Friendly Product Lifecycle Design
(Springer, 2021-01) Kota, Srinivas
Design for Environment (DfE) is an approach to design where all the environmental impacts of a product are considered over the entire life cycle of a product. Most DfE tools are conceptual in nature, and there is little adoption of these in industry. This chapter discusses the development of a holistic framework that should help in both generation and evaluation of environmentally friendly product life cycle proposals. The overall approach is to investigate literature to analyse the existing guidelines, methods, tools and methodologies for environmentally friendly product design, in order to identify the requirements for a holistic framework for design to reduce the environmental impact of a product lifecycle proposal. An ideal framework to satisfy these requirements is proposed.
ACLODS: a holistic framework for product life cycle design
(Inder Science, 2014-03) Kota, Srinivas
Design can substantially affect the life cycle of a product. During design there is a need to consider the whole life cycle rather than a single phase of a product life cycle. Different approaches on life cycle design are reviewed to arrive at requirements for a holistic framework for product life cycle design. These requirements are consolidated using empirical studies conducted in laboratory setting. Based on the findings from literature review and empirical studies, a holistic framework (ACLODS, which is formed by the first letters of the constituting dimensions in the framework) for product life cycle design is proposed. The framework is made of six dimensions; activities, criteria, life cycle phases, outcomes, design stages and structure of the product. Each dimension consists of individual elements pertaining to that dimension. The existing approaches are compared with proposed framework to identify the dimensions which need support to achieve better product life cycle design.
An Action Effectiveness Measure for Manufacturing Process Performance
(Springer, 2012-11) Kota, Srinivas
The diversity in manufacturing processes has resulted in different kinds of performance measures that suit specific purposes. Performance measures amenable to comparing process alternatives are essential to characterize manufacturing performance. The comparison of process alternatives is increasingly being subjected to broader considerations, like environment and society. This requires a measure amenable to be considered under different perspectives. On analyzing the life cycle processes of a wooden-graphite pencil from a producer’s perspective a generic performance measure of ‘resource-use effectiveness’ is arrived at. Interpretations of the measure under different scenarios and perspectives are presented.
An application of value stream mapping in auto-ancillary industry: A case study
(Emerald, 2020-01) Sangwan, Kuldip Singh; Jasti, Naga Vamsi Krishna; Kota, Srinivas
Lean manufacturing (LM) plays a major role in eliminating wastes (activities/resources) in a manufacturing organization. Value stream mapping (VSM) is one of the critical tools in LM which will help in identifying wastes in materials and information flow in a specific product family. The purpose of this paper is to illustrate the significance of VSM in the auto-ancillary industry in enhancing the productivity and the quality.
Critical Success Factors of Blockchain adoption in Green Supply Chain Management: Contribution through an Interpretive Structural Model
(Taylor & Francis, 2022-02) Kota, Srinivas
The main purpose of this paper is to study the critical success factors (CSFs) of the blockchain technology (BCT) adoption in green supply chain management (GSCM) which might be literally afirst attempt and also propose aconceptual framework of aGSCM model adopting the BCT, which will be promoting the combination of these two areas in the future. Acritical literature review of the BCT, GSCM, and BCT-based GSCM was conducted to identify the most relevant factors of BCT adoption, followed by the model formulation with the help of interpretive structural modelling (ISM) consisting of CSFs and relationships between those based on experts’ views. The overall results emphasized that ‘recording and trading’-related factors may contribute to the BCT adoption, while others like smart contract must be enhanced. This study supports previous conceptual work on BCT and GSCM and could serve as astarting point to assist in decision-making.
A designer workbench with real-time capture and reuse of information on product evolution and rationale
(ICED, 2005) Kota, Srinivas
Product Life Cycle Management promises management of all intellectual assets generated for all life cycle phases of a product [1]. This includes supporting capture and structure of information generated about an evolving product during the PD process [1]. Many structures for product information [3, 4, 5, 6] and rationale information [7, 8] have been suggested, and some turned into a tool, e.g. [7, 8]. However, a practical tool for automated capture and structure of product information including rationale information without interrupting the working of the designer, especially as a product evolves through the PD process, is yet to be developed. The framework reported here has been developed by analysing the proceedings from design experiments and literature to capture, segregate and store the information generated in product design without interrupting designer. The main features of the framework are implemented into the preliminary version of a software tool and evaluated for the ease of use and reuse for designers and re-designers (re-users of rationale). The main functions currently supported are: creation and modification of a three-dimensional assembly, exploring the details of a version tree and product structure, and, exploring the events via video/audio clips attached to the version tree.
Development of a framework for lean enterprise
(Emerald, 2020-06) Jasti, Naga Vamsi Krishna; Kota, Srinivas; Kale, Samir Ramdas
Lean enterprise (LE) is one of the emerging fields because of its impact across industry sectors. There were many LE framework articles published in the past without reviewing or considering the already published literature which lead to lots of inconsistencies in the existing frameworks of LE. This study aims to critically review the existing frameworks to identify inconsistencies and propose a new LE framework to overcome limitations of the existing LE frameworks.
Development of a lean manufacturing simulation laboratory for continuing education students
(Sage, 2020-10) Jasti, Naga Vamsi Krishna; Kota, Srinivas; Venkataraman, P. B.
The objective of the article is to establish the significance of a simulation laboratory especially simulation exercises for continuing education students in lean manufacturing course. Subsequently, identify the influence and analysis of these simulation exercises in exploring, understanding and implementing lean strategies in various contexts. The research is carried out through the following steps: enhancing the course handout and course outcomes, identifying the various lean concepts and proposing relevant exercises, mapping the course outcomes with the proposed exercises, identifying the appropriate simulation tool and developing the proposed exercises, deciding the mode of simulation laboratory offering, offering the selected critical exercises in simulation laboratory, conducting a critical review of simulation exercises with a team of experts and performing a comparative study on the student performance. The study has identified that there was a significant improvement in the performance of the students after participating in the simulation laboratory, especially in achieving the course outcomes. This was established by the analysis of the various examination scores, feedback on simulation exercises and instructors. This attempt is the first of its kind to analyse the student performance after incorporating simulation laboratory in a lean manufacturing course. The focus is on evaluating student performance based on the scores in the examinations. A population of 488 students enrolled in a masters’ degree programme is considered in the analysis 234 (without simulation lab) and 254 (with simulation lab).
Development of a method for estimating uncertainty in evaluation of environmental impacts during design
(ICED, 2007-08) Kota, Srinivas
Life Cycle Assessment (LCA) is currently the most promising and scientifically defendable technique for estimating environmental impacts of a product during its lifecycle. Currently, detailed LCA is critically dependent on high volumes of product specific data, time consuming, often unaffordable and used in the detailed stages of design. Current approximate LCA methods are either incomplete, inaccurate or require prior knowledge of what data is important. There is substantial uncertainty involved in the environmental impact calculations in LCA. Literature suggests that impact estimation results must be accompanied by an estimation of its uncertainty or imprecision, without which the decisions taken could be misleading. During development of a product, there is often a lack of accurate information about its structure, lifecycle stages, and related environmental impact information. As information about the product lifecycle continues to evolve during development, the assessment method should be such that it incorporates the different levels of abstraction about product information. A key result to be presented in this paper is a preliminary method developed using interval algebra and probabilistic theory taking product structure and lifecycle uncertainties into account. This method helps in estimating impact values of a product proposal in the earlier stages of design by providing an uncertainty value in terms of confidence on the result calculated, with the intention of supporting design decision making
Development of a platform for supporting design for environment
(ICED, 2007) Kota, Srinivas
Individual guidelines often exist for DfE but these are not integrated with design tools. There is no comprehensive method that can be useful for the whole life cycle of a product in various stages of its design. Few tools exist that could aid iterative changes to a design required in product development and there is a need for an integrated methodology and computational support for designers. Life Cycle Assessment (LCA) [1] is arguably the most promising and scientifically defendable method for estimating environmental impacts of a product during its lifecycle [2]. Like DfE guidelines, LCA tools are not well integrated with design process and tools. Consequently, there is a need for an LCA tool integrated into the natural design process that can be applied to early as well as detailed design stages
Development of an adapted framework for lean product development
(Inder Science, 2021-02) Jasti, Naga Vamsi Krishna; Kota, Srinivas
Lean product development (LPD) plays a major role in success of the organisation's product. Many researchers have proposed various LPD frameworks to implement LPD principles in the organisations without reviewing the existing LPD frameworks. Hence, this study performed a critical review of 35 frameworks with respect to novelty, background, and verification methodology used in the frameworks to identify the inconsistencies and standardise the elements. Several inconsistencies present in the existing LPD frameworks were identified and the importance of coherent theory building as well as development of coherent set of elements in the LPD was elucidated. To overcome these inconsistencies, a comprehensive conceptual LPD framework with high coherent elements was proposed.
Development of lean enterprise implementation methodology: an ISM approach
(Emerald, 2021-02) Jasti, Naga Vamsi Krishna; Kota, Srinivas
There is a concern in literature about the critical elements of lean enterprise (LE) that can be represented as pillars of lean enterprise excellence. However, existing frameworks proposed on LE excellence are very few. The purpose of this paper is to develop a relationship model among the pillars of a proposed framework of LE excellence in Indian manufacturing industry by Jasti et al. (2020) with the help of interpretive structural modelling (ISM) and structural equation modelling (SEM).
An empirical study on implementation of sustainable production practices in Indian manufacturing industry
(Emerald, 2023-10) Jasti, Naga Vamsi Krishna; Nagpal, Gaurav; Kota, Srinivas
Sustainable production (SP) is an efficient and influential approach of production for Indian manufacturing industries as it preserves the social, environmental and economic aspects of production activities altogether. The objective of this research work is to investigate the implementation status of SP practices in Indian manufacturing industries by utilizing empirical survey methodology.
An impact of simulation labs on engineering students' academic performance: a critical Investigation
(Emerald, 2021-03) Jasti, Naga Vamsi Krishna; Kota, Srinivas
This paper aims to investigate the impact of simulation laboratory on continuing education engineering students’ academic performance.
Importance of User and Usage for Eco-Design
(Springer, 2012-11) Kota, Srinivas
There are methods and technologies developed for generation and evaluation of product proposals for better environmental efficiency throughout the lifecycle. But in use phase these are not effective due to complexity of user behaviours and usage scenarios. Literature review revealed the need to develop products with the help of user to achieve sustainability. An outline of a conceptual system to include user in design is proposed in this chapter consisting of different dimensions based on the interactions and influences. It is important to consider how and where the user uses the product in reality while designing by including user also in design process. When different elements like people, product and environment come together, their individual characteristics, context in which they operate determine the interactions and influences among them. The questions need to be answered are identified to develop the proposed system.
A literature review on total quality management (models, frameworks, and tools and techniques) in higher education
(Emerald, 2022-11) Sangwan, Kuldip Singh; Jasti, Naga Vamsi Krishna; Kota, Srinivas
The purpose of this paper is to analyze the evolution of total quality management (TQM) models, frameworks, and tools and techniques in higher education (HE) over the last thirty years from 1991 till 2020, based on a literature review
A method for Estimating the Degree of Uncertainty With Respect to Life Cycle Assessment During Design
(ASME, 2010-09) Kota, Srinivas
Life cycle assessment (LCA) is used to estimate a product’s environmental impact. Using LCA during the earlier stages of design may produce erroneous results since information available on the product’s lifecycle is typically incomplete at these stages. The resulting uncertainty must be accounted for in the decision-making process. This paper proposes a method for estimating the environmental impact of a product’s life cycle and the associated degree of uncertainty of that impact using information generated during the design process. Total impact is estimated based on aggregation of individual product life cycle processes impacts. Uncertainty estimation is based on assessing the mismatch between the information required and the information available about the product life cycle in each uncertainty category, as well as their integration. The method is evaluated using pre-defined scenarios with varying uncertainty.
A method for evaluation of product lifecycle alternatives under uncertainty
(ICED, 2009) Kota, Srinivas
In each stage of product development, we need to take decisions, by evaluating multiple product alternatives based on multiple criteria. Classical evaluation methods like weighted objectives method assumes certainty about information available during product development. However, designers often must evaluate under uncertainty. Often the likely performance, cost or environmental impacts of a product proposal could be estimated only with certain confidence, which may vary from one proposal to another. In such situations, the classical approaches to evaluation can give misleading results. There is a need for a method that can aid in decision making by supporting quantitative comparison of alternatives to identify the most promising alternative, under uncertain information about the alternatives. A method called confidence weighted objectives method is developed to compare the whole life cycle of product proposals using multiple evaluation criteria under various levels of uncertainty with non crisp values. It estimates the overall worth of proposal and confidence on the estimate, enabling deferment of decision making when decisions cannot be made using current information available.
Modeling and evaluation of product quality at conceptual design stage
(Springer, 2015-05) Mishra, Rajesh P; Kota, Srinivas; Gupta, Shashank
Quality of a product is a function of many variables. These have been identified, and modeled in terms of quality digraph. The nodes in the digraph represent the quality features and the edges represent the degree of influence among these. An equivalent matrix representation of the digraph is developed to define the product system quality function (PSQF). Quality index (QI) is defined as a ratio of the actual to the ideal values of PSQF. The designer may use this index to evaluate and compare alternative designs and choose the best among these from the perspective of quality. A high value of QI indicates that the product structure is closer to the ideal state. The presented model is illustrated with an example.
Product development platform for real-time capture and reuse of evolving product information
(Inder Science, 2007-12) Kota, Srinivas
Product life cycle management promises management of all intellectual assets generated for all life cycle stages of a product. In engineering, over 75% of design activity comprises case-based design ? reuse of previous design knowledge to address a new design problem. This means that rationale capture and reuse are critical in design and redesign projects. The goal of this paper is to report empirical study of designing carried out to understand the needs and constraints for design rationale capture, and to detail the concept, implementation and preliminary evaluation of an unobtrusive, real-time design rationale capture framework.