Effect of machining on mechanical properties of borosilicate glasses

0579667 - FZÚ 2024 RIV PL eng C - Konferenční příspěvek (zahraniční konf.)
Václavek, Lukáš - Tomáštík, Jan - Čtvrtlík, R.
Effect of machining on mechanical properties of borosilicate glasses.
Proceedings of the conference Local Mechanical Properties. Warszawa: de Gruyter, 2022 - (Hvizdoš, P.; Shepa, I.; Ondrejová, K.; Bureš, R.; Martin, T.), s. 62-74. E-ISSN 1339-4533.
[International Conference on Local Mechanical Properties /15./. Košice (SK), 11.05.2022-13.05.2022]
Grant CEP: GA TA ČR TN01000038
Institucionální podpora: RVO:68378271
Klíčová slova: borosilicate glass * mechanical properties * indentation * acoustic emission * glass manufacturing
Obor OECD: Materials engineering
https://sciendo.com/article/10.2478/pmp-2022-0008

Although optical properties are essential for materials for optical purposes, their mechanical properties must also be considered as they directly govern their practical applicability as well as their machining. The machining of optical glasses is mainly carried out by mechanical removal of the material using free or bonded abrasives. The relationship between the local mechanical properties of three types of borosilicate glasses used to produce optical elements (mirrors) and the type of surface machining was investigated. The samples were machined using two approaches, namely 7-axis CNC surface machining and conventional manual machining. Advanced analysis of nano/micro-mechanical properties was performed on glass samples using quasi-static nanoindentation and microindentation and dynamic impact test complemented by the analysis of the acoustic emission signals generated during the mechanical tests.

Trvalý link: https://hdl.handle.net/11104/0348480