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Non-destructive strength testing of microindented float glass by a nonlinear acoustic method
RISE Research Institutes of Sweden, Bioeconomy and Health, Material and Surface Design. (Glass)ORCID iD: 0000-0003-2160-6979
Silesian University of Technology, Poland.ORCID iD: 0000-0002-1698-023X
RISE Research Institutes of Sweden, Bioeconomy and Health, Material and Surface Design. (Glass)ORCID iD: 0000-0001-7925-6137
Acoustic Agree AB, Sweden.
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2023 (English)In: Construction and Building Materials, ISSN 0950-0618, E-ISSN 1879-0526, Vol. 391, article id 131748Article in journal (Refereed) Published
Abstract [en]

The present paper describes a method for non-destructive testing of the glass strength. Square 10 × 10 cm2 samples of annealed float glass was inflicted with a controlled defect in the centre of the atmospheric side using Vickers microindentation-induced cracking with a force of 2 N, 5 N and 10 N and compared to an un-indented reference. The samples were non-destructively tested using a nonlinear acoustic wave method resulting in defect values. The average of the defect values was found to linearly correlate to the indentation force in a log–log relationship. The samples were subsequently tested in a ring-on-ring setup that allows for an equibiaxial stress state. The indentation-induced cracking gave practically realistic strength values in the range of 45 to 110 MPa. The individual sample values for failure stress as a function of normalized defect value show linear trends with approximately half of the data within 95% confidence limit. In summary, this study provides an initial proof-of-concept for a non-destructive testing of the strength of glass.

Place, publisher, year, edition, pages
2023. Vol. 391, article id 131748
Keywords [en]
Float glass, Non-destructive testing, Glass strength, Indentation cracking, Microindentation, Nonlinear acoustic wave, Ring-on-ring test
National Category
Materials Engineering Tribology (Interacting Surfaces including Friction, Lubrication and Wear) Fluid Mechanics and Acoustics Applied Mechanics Reliability and Maintenance
Identifiers
URN: urn:nbn:se:ri:diva-64863DOI: 10.1016/j.conbuildmat.2023.131748OAI: oai:DiVA.org:ri-64863DiVA, id: diva2:1758394
Projects
Hållfasthetsklassificering av planglas för bättre kvalitet - validering av metod genom väldefinierade ytdefekter och hållfasthetsprovningTunnare och starkare glas för hållbar produktion och konsumtion
Funder
ÅForsk (Ångpanneföreningen's Foundation for Research and Development), 19-479Swedish Research Council Formas, 2018-00707
Note

ÅForsk (Ångpanneföreningens Forskningsstiftelse) 19-479. Forskningsrådet Formas 2018-00707. 

Available from: 2023-05-22 Created: 2023-05-22 Last updated: 2023-07-05Bibliographically approved

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Karlsson, StefanGrund, Lina

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