Non-destructive strength testing of microindented float glass by a nonlinear acoustic method
(2023) In Construction and Building Materials 391.- Abstract
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... (More)
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.
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- author
- Karlsson, S. ; Kozłowski, M. ; Grund, L. ; Andersson, S. A.K. ; Haller, K. C.E. and Persson, K. LU
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Float glass, Glass strength, Indentation cracking, Microindentation, Non-destructive testing, Nonlinear acoustic wave, Ring-on-ring test
- in
- Construction and Building Materials
- volume
- 391
- article number
- 131748
- publisher
- Elsevier
- external identifiers
-
- scopus:85160010989
- ISSN
- 0950-0618
- DOI
- 10.1016/j.conbuildmat.2023.131748
- language
- English
- LU publication?
- yes
- id
- 6882a0d5-6d9a-4033-b687-74cafa15f7c8
- date added to LUP
- 2023-08-21 11:05:32
- date last changed
- 2023-10-11 14:56:01
@article{6882a0d5-6d9a-4033-b687-74cafa15f7c8,
abstract = {{<p>The present paper describes a method for non-destructive testing of the glass strength. Square 10 × 10 cm<sup>2</sup> 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.</p>}},
author = {{Karlsson, S. and Kozłowski, M. and Grund, L. and Andersson, S. A.K. and Haller, K. C.E. and Persson, K.}},
issn = {{0950-0618}},
keywords = {{Float glass; Glass strength; Indentation cracking; Microindentation; Non-destructive testing; Nonlinear acoustic wave; Ring-on-ring test}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Construction and Building Materials}},
title = {{Non-destructive strength testing of microindented float glass by a nonlinear acoustic method}},
url = {{http://dx.doi.org/10.1016/j.conbuildmat.2023.131748}},
doi = {{10.1016/j.conbuildmat.2023.131748}},
volume = {{391}},
year = {{2023}},
}