Relaxation behaviour, high-temperature tensile strength and brittleness of glass melts
dc.bibliographicCitation.firstPage | 399 | |
dc.bibliographicCitation.lastPage | 409 | |
dc.bibliographicCitation.volume | 62 | |
dc.contributor.author | Hessenkemper, Heiko | |
dc.contributor.author | Brückner, Rolf | |
dc.date.accessioned | 2024-08-28T16:08:21Z | |
dc.date.available | 2024-08-28T16:08:21Z | |
dc.date.issued | 1989 | |
dc.description.abstract | The intention of this paper is to investigate the frequently in practice used conception "brittleness of a glass melt" and to find a method for quantitative measurements of this kind of property. The simple compression of cylindrical glass samples has been applied as a measuring technique, by which information can be obtained on the high-temperature (ht)-fracture strength, the stiffness and the relaxation behaviour of glass melts. In this way the brittleness of a glass melt can be defined in a quantitative manner. Α clear correlation has been found between the ht-fracture tensile strength and the relaxation modulus for some industrial commercial glasses and for various laboratory glasses with successive substitution of CaO by MgO in such a way that a high relaxation modulus is connected to a low ht-fracture tensile strength and vice versa at comparable (Newtonian) viscosities and deformation rates. Differences up to more than 300 % have been measured for silicate glass melts of various compositions. Thus, a powerful method has been developed which allows to understand and to measure the isothermal workability of a glass melt and to investigate the effect of various parameters on it. In contrast to the pure elastic and viscoelastic range the brittle fracture behaviour within the viscous range is a volume property. | |
dc.description.version | publishedVersion | |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/15195 | |
dc.identifier.uri | https://doi.org/10.34657/14217 | |
dc.language.iso | eng | |
dc.publisher | Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft | |
dc.relation.ispartofseries | Glastechnische Berichte | |
dc.relation.issn | 0946-7475 | |
dc.rights.license | CC BY 3.0 DE | |
dc.rights.uri | https://creativecommons.org/licenses/by/3.0/de/ | |
dc.subject.ddc | 660 | |
dc.title | Relaxation behaviour, high-temperature tensile strength and brittleness of glass melts | |
dc.type | article | |
dc.type | Text |
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