KS L ISO 17561:2018 Fine ceramics(advanced ceramics, advanced technical ceramics) — Test method for elastic moduli of monolithic ceramics at room temperature by sonic resonance
2018KS L ISO 17561:2018 Fine ceramics(advanced ceramics, advanced technical ceramics) — Test method for elastic moduli of monolithic ceramics at room temperature by sonic resonance
2003KS L ISO 17561:2003 Fine ceramics(advanced ceramics, advanced technical ceramics)-Test method for elastic moduli of monolithic ceramics at roomtemperature by sonic resonance