Smart Tribology Training Kit for Real-Time Evaluation of Lubricant Quality based on Temperature and Noise Characteristics under Variable Loading ConditionsMuhammad Nurtanto, Constantinus Rudy Prihantoro, Hamid Abdillah and Gulzhaina K. KassymovaEPJ Web Conf., 377 (2026) 06005DOI: https://doi.org/10.1051/epjconf/202637706005