Yazar "Garcia-Collado, A." seçeneğine göre listele

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    Evaluation of machinability-based sustainability indicators in the eco-benign turning of Ti3Al2.5V alloy with textured tools
    (Springer London Ltd, 2021) Singh, Rupinder; Gupta, Munish Kumar; Sarikaya, Murat; Mia, Mozammel; Garcia-Collado, A.
    The recent step towards Sustainable Manufacturing (SM) and efforts to reduce the consumption of cutting fluids have become the hot topic of research these days. Various efforts and strategies have been employed in the modern manufacturing sector to control the environmental pollutions generated from the application of cutting fluids. Therefore, in this holistic work, one such effort of reducing the consumption of cutting fluid is employed with the application of minimum quantity lubrication (MQL) and tool texturing. The turning trials were made on titanium alloy:Ti3Al2.5V alloy under dry and MQL conditions using textured and non-textured tools. The tool life, average surface roughness, specific cutting energy, air quality, and chip morphology were studied with the aid of the above-subjected conditions. In the end, the socio-economic aspects of all cooling conditions were studied and analyzed in the context of sustainable manufacturing. The outcomes of this study reveal that the combination of textured tools and minimum quantity lubrication considerably enhance the machining and sustainability performance as contended with other conditions. However, the air quality factor, i.e., PM2.5 particle generation, was less in the case of a textured tool with MQL conditions. Overall, it is worthy to mention that the combination of tool texturing and MQL cooling conditions has been considered as one of the potential combinations in the area of green machining.
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    Reliability and economic analysis in sustainable machining of Monel 400 alloy
    (Sage Publications Ltd, 2021) Tayal, Ashwani; Kalsi, Nirmal Singh; Gupta, Munish Kumar; Garcia-Collado, A.; Sarikaya, Murat
    Engineering field nurtures a variety of superalloys and its wide applications due to the inherent properties of such material. The prime concern of working engineers is to explore reliability, quality, economy, and machinability analysis of these superalloys. In this work, sustainable machining of Monel 400superalloy using PVD multilayer coated carbide tool under dry turning was studied. Surface roughness (Ra, Rz, and Rq), power (P) and cutting force (Fc) were addressed as responses. The subsequent effect of cutting speed, feed and depth of cut on the responses was explored through response surface methodology (RSM), statistical analysis of variance (ANOVA) and multiple regression analysis. Details of tool wear was observed via scanning electron microscope (SEM) to know the cutting behavior at interface. Further, the reliability and economic analysis were performed to substantiate the feasibility of cutting insert. The investigation reveals that surface roughness was affected by feed and cutting speed. The increase in cutting speed uncovers lower cutting forces with improved surface finish during dry turning which further reduces the power requirement. The economic analysis shows unit production time and unit production cost based on a single insert PVD coated carbide tool under optimum value condition. The reliability analysis exposes the meantime to repair (MTTR) (5 min), mean time between failure (MTBF) (28 min), availability (84.8%), failure rate (0.03), and reliability (80.5%) for the production system.