Experimental investigations and prediction of WEDMed surface of nitinol SMA using SinGAN and DenseNet deep learning model

Vinay Vakharia, Jay Vora, Sakshum Khanna, Rakesh Chaudhari, Milind Shah, Danil Yu. Pimenov, Khaled Giasin, Parth Prajapati, Szymon Wojciechowski

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Abstract

Shape memory alloys (SMA) hold a very promising place in the field of manufacturing, especially in biomedical and aerospace applications. Owing to the unique and favorable properties such as pseudo elasticity, shape memory effect and Superelasticity, Nitinol is the most popular amongst other SMAs. However, a major challenge lies in the final surface features of the machined component. In the current study, Nitinol rods were machined using the wire electrical discharge machining (WEDM) process and subsequently, the surfaces were investigated using the Field emission scanning electron miscroscope (FESEM) technique for the features. In addition to this, Singular Generative Adversarial Network (SinGAN) and DenseNet deep learning models were prepared and applied for the prediction of surface morphology and its correlation with the process parameters. It was concluded from the study that the DenseNet model was highly effective in predicting the surface images with 100% average accuracy both with training and testing whereas the least average accuracy of 99.13% and 98.98% with training and testing respectively are observed with the MNB model. Thus, the proposed methodology can prove to be highly beneficial for prediction, specifically for manufacturing applications where the data is limited.
Original languageEnglish
Pages (from-to)325-337
Number of pages13
JournalJournal of Materials Research and Technology
Volume18
Early online date26 Feb 2022
DOIs
Publication statusPublished - 1 May 2022

Keywords

  • shape memory alloy (SMA)
  • nitinol
  • wire electrical discharge machining (WEDM)
  • surface roughness (SR)
  • SinGan
  • deep learning

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