A study on the ?wire-EDM of Ni55.8Ti shape memory superalloy: an experimental investigation and a hybrid ANN/PSO approach for optimization

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dc.authoridAKAR, Samet/0000-0002-3202-1362
dc.contributor.authorAkar, Samet
dc.contributor.authorSeyedzavvar, Mirsadegh
dc.contributor.authorBoga, Cem
dc.date.accessioned2025-01-06T17:43:47Z
dc.date.available2025-01-06T17:43:47Z
dc.date.issued2023
dc.description.abstractThe unique properties of high hardness, toughness, strain hardening, and development of strain-induced martensite of nickel-titanium superalloys made the micro-wire electro discharge machining (mu wire-EDM) process one of the main practical options to cut such alloys in micro-scale. This paper presents the results of a comprehensive study to address the response variables of Ni55.8Ti superalloy in mu wire-EDM process, including the kerf width (KW), material removal rate (MRR), arithmetic mean surface roughness (R-a) and white layer thickness (WLT). To this aim, the effects of pulse on-time (T-on), pulse off-time (T-off), discharge current (I-d) and servo voltage (SV) as input parameters were investigated using the experiments conducted based on Taguchi L-27 orthogonal array. The results were employed in the analysis of variance (ANOVA) to examine the significance of input parameters and their interactions with the output variables. An optimization approach was adopted based on a hybrid neural network/particle swarm optimization (ANN/PSO) technique. The ANN was employed to achieve the models representing the correlation between the input parameters and output variables of the mu wire-EDM process. The weight and bias factor matrices were obtained by ANN in MATLAB and together with the feed forward/backpropagation model and developed functions based on PSO methodology were used to optimize the input parameters to achieve the minimum quantities of KW, R-a and WLT and the maximum value of MRR, individually and in an accumulative approach. The results represented a maximum accumulative error of nearly 8% that indicated the precision of the developed model and the reliability of the optimization approach. At the optimized level of input parameters obtained through the accumulative optimization approach, the KW, R-a, and WLT remained nearly intact as compared with the levels of responses obtained in the individual optimization approach, while there was a sacrifice in the machining efficiency and reduction in the MRR in the mu wire-EDM process of Nitinol superalloy.
dc.description.sponsorshipScientific Research Coordination Unit of Adana Alparslan Tuerkes Science and Technology University [19103007]
dc.description.sponsorshipThis work was supported by Scientific Research Coordination Unit of Adana Alparslan Tuerkes Science and Technology University with project number of 19103007.
dc.identifier.doi10.1007/s40430-023-04100-5
dc.identifier.issn1678-5878
dc.identifier.issn1806-3691
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85149023118
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s40430-023-04100-5
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2797
dc.identifier.volume45
dc.identifier.wosWOS:000940436600002
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Heidelberg
dc.relation.ispartofJournal of The Brazilian Society of Mechanical Sciences and Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectNi55 8Ti superalloy
dc.subjectmu wire-EDM
dc.subjectANN
dc.subjectPSO
dc.subjectKerf width
dc.subjectMaterial removal rate
dc.subjectSurface roughness
dc.subjectWhite layer thickness
dc.titleA study on the ?wire-EDM of Ni55.8Ti shape memory superalloy: an experimental investigation and a hybrid ANN/PSO approach for optimization
dc.typeArticle

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