Machine Learning-Based Material Thickness and Type Classification via Scattering Parameters

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dc.authorid0000-0003-3399-9343
dc.contributor.authorEngin, Mustafa Alptekin
dc.contributor.authorCakir, Mehmet
dc.date.accessioned2026-02-28T12:18:14Z
dc.date.available2026-02-28T12:18:14Z
dc.date.issued2025
dc.departmentBayburt Üniversitesi
dc.description.abstractThe precise determination of material type and thickness is of major significance in non-destructive testing, quality assurance, and materials science, as it influences the functionality, reliability, and performance of materials in engineering applications. This study proposes a methodology for the classification of material thickness and type through the analysis of scattering parameters within the 8-12 GHz frequency range. A database was created, encompassing real, imaginary, and dB values of reflection and transmission parameters for nine real-world materials with thicknesses ranging from 1 to 10 mm. This study addressed two main classification tasks, namely material thickness and material type. A variety of training-testing splits were employed in conjunction with 10-fold cross-validation to facilitate a comparison of classifier performance. In the material type classification, incorporating multiple thickness levels of each material enabled the model to distinguish materials with similar reflection characteristics more accurately, thereby enhancing discrimination performance. The results showed that Fine KNN consistently achieved 100% accuracy in thickness classification, while Quadratic SVM achieved 100% accuracy in material type classification, even when utilising only three thickness levels. Furthermore, the 90% training-10% testing split yielded the highest performance in thickness classification, whereas the optimal data split for material type classification differed across classifiers. Overall, this study demonstrates that the combination of scattering parameters and machine learning serves as a reliable and efficient approach for non-destructive material characterization.
dc.identifier.doi10.3390/app16010391
dc.identifier.issn2076-3417
dc.identifier.issue1
dc.identifier.scopus2-s2.0-105027328811
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3390/app16010391
dc.identifier.urihttps://hdl.handle.net/20.500.12403/6179
dc.identifier.volume16
dc.identifier.wosWOS:001657223300001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherMdpi
dc.relation.ispartofApplied Sciences-Basel
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20260218
dc.subjectthickness classification
dc.subjectmaterial identification
dc.subjectnon-destructive testing
dc.subjectscattering parameters
dc.subjectmachine learning
dc.titleMachine Learning-Based Material Thickness and Type Classification via Scattering Parameters
dc.typeArticle

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