Synthetic Data for Predictive Maintenance: A Systematic Review and Framework for Industry 4.0 Applications | 2026 Tyyppi A1 Journal article (refereed), original research Tekijä(t) Nieminen Walter, Gebreweld Haben, Liuha Arto, Nissinen Mikko, Verdugo Mario, Mikkola Aki, Kutvonen Antero Digitaalinen murros LUT-kauppakorkeakoulu LUT School of Engineering Sciences LUT School of Energy Systems