Department of Mechanical engineering

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Subject: search.filters.subject.Sustainability

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Now showing 1 - 10 of 18
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    Use of dfe methodologies and tools - Major barriers and challenges
    (ICED, 2007) Kota, Srinivas
    Products make substantial impact on environment. Product to waste mass generated through out the product lifecycle can be as high as 1:20. 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. Early stages of product development are the key for this because if we know the environmental impacts of potential designs while designing, we can make changes to these designs then and there so as to reduce their environmental impacts [1, 2]. However, unlike cost and performance, use of environmental criteria and DfE is far from part of mainstream designing [3]. Most DfE tools are conceptual in nature, and there is very little adoption of these in industry. Methods like [4] are useful for specific phases of the lifecycle of a product. However, during product development there is a need to consider the whole lifecycle rather than a single phase of the product
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    Sustainable Supply Chain in Product Development
    (Springer, 2014-12) Kota, Srinivas
    There exists an urgency for organizations all over the world to consider sustainable supply chain strategy in product development. Every firm needs to provide a safe working environment and reduce its ecological footprint as well as ensure returns to its investors. This calls for cross-functional integration, better decision making and performance improvement. Every stakeholder in the supply chain is responsible to ensure its’ sustainability. Several incentives can be found in adopting a sustainable supply chain management strategy. Sustainable supply chain management pushes the system towards forethought, exploration and data analysis in business so as to measure up to the expectation of customers and flourish in the long run. The focus of this study has been on why a company requires sustainable supply chain management and how it would benefit by implementing a sustainable supply chain management strategy. The core aspect was to analyze the advantages of sustainability in a supply chain and how everybody would be motivated to work towards it. Main outcome from the research is that stakeholders in different domains are more or less similar but the challenges and motivations of stakeholders are different in different domains. It is required to consider the domain specific characteristics for inclusion of sustainable supply chain in product development. A conceptual strategy is proposed to include sustainable supply chain in product development.
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    Sustainability Definitions — An Analysis
    (Springer, 2017-02) Kota, Srinivas
    Every product or system that we consume or use affects our lives and the environment during its production, consumption and disposal. Emissions and wastes are generated which contaminate soil, water and air, the key life support systems on earth. If these support systems will stop functioning in their natural form, then survival and wellbeing of various living things will be endangered. Thus a product or a system should be conceived based on the principles of sustainability. There exist number of definitions on sustainability making it difficult to choose one for application. So in this paper we aim to discuss the definitions of sustainability from different contexts i.e., global and local, temporal and spatial, measurable and non-measurable, and clear and ambiguous. From the analysis we found most of the definitions are global, non-measurable and ambiguous. We need measurable and clear definitions of sustainability to be used in various situations.
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    Sustainable techniques in grinding: State of the art review
    (Elsevier, 2020-10) Kala, Prateek
    Grinding is the most common method for machining of materials like ceramics, composites, alloys and super alloys having high strength to weight ratio. However, due to stringent mechanical properties of these advanced materials, several challenges are faced with conventional mode of grinding like environmental factors, worker health issues, surface integrity, material stability and more energy investment during machining process. This paper presents the review of recent advancements in grinding techniques in order to achieve sustainable grinding process. A systematic review methodology has been adopted to highlight the research findings which lead to cleaner production using grinding process. Several techniques namely ultrasonic assisted machining, biodegradable minimal quantity lubrication (MQL), and machining in the cryogenic conditions have been elaborated in the present review article. The use of these sustainable techniques is found to result in a significant improvement in surface quality and surface integrity, reduction in grinding forces up to 50–60% over conventional grinding. Besides this, it also has been found to double the abrasive wheel life.
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    The Lithium-Ion Battery Recycling Process from a Circular Economy Perspective—A Review and Future Directions
    (MDPI, 2023-04) Mishra, Rajesh P
    Ever since the introduction of lithium-ion batteries (LIBs) in the 1970s, their demand has increased exponentially with their applications in electric vehicles, smartphones, and energy storage systems. To cope with the increase in demand and the ensuing environmental effects of excessive mining activities and waste production, it becomes crucial to explore ways of manufacturing LIBs from the resources that have already been extracted from nature. It is possible by promoting the re-usage, refurbishing, and recycling of the batteries and their constituent components, rethinking the fundamental design of devices using these batteries, and introducing the circular economy model in the battery industry. This paper through a literature review provides the current state of CE adoption in the lithium-ion battery industry. The review suggests that the focus is mostly on recycling at this moment in the battery industry, and a further understanding of the process is needed to better adapt to other CE practices such as reuse, remanufacture, refurbishment, etc. The paper also provides the steps involved in the recycling process and, through secondary case studies, shows how some of the industries are currently approaching battery recycling. Thus, this paper, through review and secondary cases, helps us to understand the current state of LIB recycling and CE adoption.
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    A sustainability assessment framework for cement industry – a case study
    (Emerald, 2019-02) Digalwar, Abhijeet K.; Sangwan, Kuldip Singh
    The purpose of this paper is to develop a framework and key performance indicators (KPIs) to assess the sustainability of the manufacturing organizations along the integrated supply chain.
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    R744 refrigeration as an alternative for the supermarket sector in small tropical island developing states: The case of MauritiusUtilisation du R744 comme frigorigène dans le secteur de la grande distribution dans les petits états insulaires tropicaux en développement: Le cas de l’Ile Maurice
    (Elsevier, 2019-07) Dasgupta, Mani Sankar
    The implications of HCFC phase out and coming restrictions on HFCs on the energy efficiency of refrigeration systems for Article 5 countries have to be examined if the issues of global warming and ozone depletion are to be addressed. While the Kigali amendment to the Montreal Protocol is seen as a driving force for the phase out of HFCs, only the low GWP argument cannot be considered as a determining factor for Small Island Developing States (SIDs) with high reliability on imported fossil fuels for their electricity generation. While CO2 has emerged as a promising refrigerant for the supermarket sector, the shift for such alternative technologies represents a tremendous leap forward for SIDs. The paper discusses the implications of a shift towards CO2 through an energy analysis of the proposed alternatives and their implementation is discussed with special focus on the unique socio-economic context of SIDs.
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    Antecedents of a Resilient Sustainable Supply Chain
    (Elsevier, 2023) Sangwan, Kuldip Singh
    These days resilience and sustainability have become critical supply chain measures. Supply chain resiliency is being given top priority by the industry as well as the governments due to prolonged disruptions because of Covid-19 pandemic and geo-political uncertainties. The literature on this topic is largely focused on supply chain network design taking resiliency and sustainability into consideration. Even some researchers have found the antecedents of resilient sustainable supply chains (RSSC), but this research is largely segregated for a single or a few elements. There is a need to amalgamate the various antecedents of RSSC, find their weightage and interrelationship among them. This paper identifies seven antecedents of a RSSC from literature – visibility, flexibility, collaboration, control, circularity, digitalization, and network design. A fuzzy DEMATEL approach is used to find the causal relationship among these seven antecedents. Further, the weightage and ranks of these antecedents were found using multi criteria decision models. The findings of the study can be used by various researchers and practitioners for determining the importance and interrelationship of these elements in their organizations, which can be leveraged for strategic and operational decisions for effective management of supply chain disruptions.
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    Integrated Lean Management System for Sustainable Development: A Conceptual Model
    (Excel Publishers, 2011) Sangwan, Kuldip Singh
    Sustainability manufacturing practices like lean and green manufacturing seek to optimize production efficiency while minimizing environmental impact and maintaining social equity. It is also well knowing fact that company that adopt sustainable practices are able to achieve better quality, improved productivity and profitable growth. Among these lean is an important practice that leads us towards sustainability initiatives by eliminating waste at all levels in system and using the resources efficiently. In this paper an integrated lean sustainability development model has been proposed to integrate supplier, organization and customer.
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    Supply chain resilience and its key performance indicators: an evaluation under Industry 4.0 and sustainability perspective
    (Emerald, 2023-05) Sangwan, Kuldip Singh
    Creating visibility in the supply chain (SC) helps in making it resilient. Integrating the SC with Industry 4.0 key enabling technologies creates visibility and sustainability in SCs. It also fosters intelligent decision-making, thereby making a SC smart. However, how Industry 4.0 technologies affect key performance indicators (KPIs) of a resilient SC and may help achieve sustainability is rarely studied.