Microhardness Prediction of Aerospace Materials Using Electromechanical Admittance

SOFUOĞLU M. A., Haydarlar G., TEKKALMAZ M.

Springer Aerospace Technology, Springer International Publishing Ag, ss.179-196, 2026 identifier

  • Yayın Türü: Kitapta Bölüm / Araştırma Kitabı
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1007/978-3-032-23373-8_8
  • Yayınevi: Springer International Publishing Ag
  • Sayfa Sayıları: ss.179-196
  • Anahtar Kelimeler: Aerospace materials, Electromechanical admittance, Inconel 718, Microhardness, Non-destructive inspection, Ti–6Al–4V
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Electromechanical admittanceElectromechanical admittance (EMA) is a widely used technique for detecting structural changes and material property variations. Owing to its non-destructive inspection (NDINon-Destructive Inspection (NDI)) capability, low cost, and relatively short data analysis time, EMA has gained significant attention in structural health monitoringStructural health monitoring (SHM) and material characterization applications. In this study, the relationship between EMA responses and microhardnessMicrohardness was systematically investigated. Hastelloy-X, Inconel 718Inconel 718, and Ti–6Al–4VTi–6Al–4V workpieces were machined under different cutting parameters, and specimens were extracted from the machined surfaces. EMA and microhardnessMicrohardness measurements were subsequently performed through controlled experimental procedures. Based on the susceptance (imaginary part of admittance) values obtained from EMA measurements, an empirical equation was derived to estimate microhardnessMicrohardness. The proposed model yielded a coefficient of determination (R2) of 0.917, indicating strong predictive capability. Moreover, the statistical significance level of the regression model was found to be below 0.001, confirming the robustness and reliability of the proposed equation for predicting microhardnessMicrohardness values.