Conference Papers
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Item Wetting behaviour of a Green cutting fluid (GCF); influence of surface roughness and surface energy of AA5052, Ti6Al4V and EN31(Elsevier Ltd, 2022) Edachery, V.; Ravi, S.; Badiuddin, A.F.; Tomy, A.; Kailas, S.V.; Suvin, P.S.Green Cutting fluids (GCFs) are biodegradable and eco-friendly alternatives that can be employed in metalworking processes. They facilitate better tool service life and surface quality by removing the heat built, reducing coefficients of friction at tool-chip, and tool-work interfaces, flushing away the chip and preventing the formation of Built-up edges (BUEs). Conventionally, mineral oil (MO) based CFs are used, which can cause serious health hazards in humans as well as negatively impact the environment. Sustainable Green-cutting fluids (GCF) were found to be the solution for reducing the issues raised by the MO-based cutting fluids. The GCF used in the present study was synthesized using coconut oil (Cocos Nucifera) as the base, which is a clean, bio-degradable and eco-friendly substitute for petroleum-based mineral oils. This work is focused on experimentally determining the effectiveness of green cutting fluids on surfaces of (Aluminium)AA5052, (Titanium alloy)Ti6AL4V and Steel(EN31) with various surface topographies. In order to do so, the wetting properties were measured by a stable contact angle θ between the solid–liquid surface and the vapour-liquid interface. Wettability responses from the roughened surfaces in the range of 0.06–2.1 µm was evaluated using a profilometer and contact angle goniometer. Results show that the wetting characteristics of GCF are comparable to that of the MO-based CFs and can be a viable alternative, thus reducing the adverse effects on the environment. In conclusion, this study shows the potential of GCFas an alternative to MO-based cutting fluids used in machining operations in the manufacturing industries. © 2022Item A Sustainable Green Supplier Selection Using CRITIC Method(Springer Science and Business Media Deutschland GmbH, 2023) Vadivel, S.M.; Shetty, D.S.; Sequeira, A.H.; Nagaraj, E.; Sakthivel, V.A supplier selection is a MCDM problem in nature as it deals with different criteria or attributes to find it out best one. It is a strategic decision approach for the ABC manufacturing company located in Chennai, Tamil Nadu, and Southern India. Currently, they are having five alternative suppliers by supplying raw materials in different sources. Management techniques will helpful in finding out importance of most weightage criteria to analyze the suppliers for their long term relationship and partnership. A CRITIC (Criteria Importance through Inter criteria Correlation) method, a MCDM technique will be helpful to identify this problem. We have considered here 6 attributes such as financial perspective, customer perspective, process perspective, Innovation and learning perspective, environmental perspective and social perspective. The purchasing manager interviewed and surveyed to identify the most importance criteria taken into consideration for selecting their supplier to their ABC firms. The CRITIC method used here to find out best weightage by considering quantitative as well as qualitative data for their firms. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.Item ESG Investment and Sustainability Reporting: A Systematic Review for Future Research(Springer Nature, 2023) Poornima, S.; Gopalakrishna, B.V.Sustainable finance is an area of study that looks beyond the simple number of risk and return. It looks over the impact of investment on ESG, i.e., environment, society, and governance factors. This paper conducts a comprehensive review of research works on ESG and its disclosures using the TCCM framework and thematic analysis, specifically in the Indian context, to determine future research priorities and research gaps in India. The search parameters identified 50 research papers, 44 of which were accepted for analysis. The study identified a gap in the available literature that allows for future observation. The study agenda in this review may help researchers to construct specific research fields around the discovered gaps. ESG investment has emerged as a critical problem for businesses. As a result, a considerable study in this sector is required to grow this topic as an operational investment area. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2023.Item Towards a Greener Extraction: Renewable Energy Initiatives in India's Mining Industry(Institute of Electrical and Electronics Engineers Inc., 2024) Bojja, S.K.; Kunar, B.M.; Rajendhar, R.The main objectives of using renewable energy in India are to advance economic growth, enhance power reliability, increase access to electricity, and lessen the consequences of global warming. Utilizing sustainable energy and ensuring that all residents have access to reliable, inexpensive, environmentally friendly, and contemporary amenities enable sustainable development. Due to strong government support and an improving economic climate, India is rising to the top of the list of the most promising markets in the world for renewable energy. The administration has developed open-minded guidelines, approaches, and a setting that welcomes foreign investment and advances the nation's green energy industry. This essay discusses significant advancements in India's use of renewable energy, including prospects, projections, electricity production and challenges. This study recognized the considerable challenges that the renewable energy industry faces as well as how renewable energy affects the mining sector. Mining businesses are switching to non-fossil fuels in order to lessen their carbon footprint. Policymakers, entrepreneurs, project developers, investors, businesses, appropriate parties-related scholars, and experts will find the suggestions based on the evaluated results. © 2024 IEEE.Item Optimisation of Cement Mortar Performance Through Bagasse Ash as a Sustainable Supplementary Material(Springer Science and Business Media Deutschland GmbH, 2024) Majeed, P.M.M.; Baby, B.; Palanisamy, T.Bagasse ash, a residue from the processing of sugarcane, has the potential as an environmentally friendly addition material for waste valorisation in the building sector. This study used different amounts of bagasse ash to partially substitute cement to examine the mechanical and durability aspects of cement mortar. The experimental matrix involved substituting the cement with bagasse ash at dosages of 5, 10, 15, and 20%. Using compressive strength, flexural strength, ultrasonic pulse velocity (UPV), and rapid chloride penetration tests (RCPT), both the durability and mechanical characteristics of the various mixes were studied. The results revealed that a bagasse ash dosage of 15% emerged as the optimum level, demonstrating superior mechanical and durability performance. For measuring compressive strength and UPV, mortar cube specimens measuring 70.6 mm × 70.6 mm × 70.6 mm were cast; prism specimens measuring 40 mm × 40 mm × 160 mm were formed for the assessment of flexural strength; and cylindrical specimens measuring 100 mm in diameter and 200 mm in height were cast for RCPT. The significant improvement in the compressive and flexural strengths demonstrated the beneficial impact of bagasse ash on the mortar's structural integrity. Furthermore, UPV measurements revealed enhanced internal cohesion and homogeneity in the mortar matrix. Moreover, the findings of the RCPT demonstrated a noteworthy decrease in the penetration of chloride ions, highlighting the capacity of bagasse ash to alleviate the risk of corrosion on reinforcement. This study emphasises the importance of using bagasse ash as a sustainable alternative for waste valorisation in cementitious systems. An optimised dosage of 15% enhanced the mechanical and durability properties and contributed to the eco-friendly disposal of agricultural waste. These findings support the adoption of bagasse ash as a viable supplementary material to promote environmental sustainability and improve the performance of construction materials. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.Item Unmodified Bitumen in SMA: A Sustainable and Cost-Effective Approach(Springer Science and Business Media Deutschland GmbH, 2025) Arun, U.; Chinnabhandar, R.K.; Talkeri, H.T.; Yatish, R.G.; Ravishankar, A.U.Stone Matrix Asphalt (SMA) is a Hot Mix Asphalt (HMA) mixture consisting of a discontinuous aggregate gradation characterised by a high coarse aggregate content (between 70 and 80%), a high percentage of binder (typically between 6 and 7%) and a filler content as high as about 10%. SMA has an aggregate skeleton which imparts high strength and rutting resistance to the mixture. The high binder content though provides the mixture with durability, it also drains through the void spaces in the aggregate skeleton during production, transportation and placement of the mixture in the field. Hence, to reduce the drainage of bitumen and bitumen mortar, the SMA guidelines suggest using a modified bitumen or pelletised cellulose fibres in the mixture when a conventional bitumen such as Viscosity Graded (VG 30) is used. However, the production of cellulose fibres is not only expensive but also requires trees to be cut since cellulose is obtained from plant sources leading to deforestation. Due to the high cost of Polymer Modified Bitumen (PMB), the SMA mixtures prepared with the modified bitumen are also expensive. Hence, the present study focuses on the laboratory evaluation of SMA mixes using a conventional Viscosity Graded bitumen (VG 40) without the use of pelletised cellulose fibres. The results indicated that the susceptibility of mixtures to drainage of binder and/or binder mortar was within the permissible limit of 0.3% by weight of the mixture. The mechanical and moisture susceptibility tests conducted on compacted specimens indicated that the performance is comparable to that of the mixtures prepared using PMB. Further, it was noted that only the grades of bitumen softer than VG 40 required cellulose fibres to reduce drain-down. The study also revealed a reduction in cost due to not using cellulose fibres with VG 40 bitumen or modified bitumen, which makes it more environmentally friendly and sustainable. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.