The mechanical performance of bi-treated glass

Zaccaria, Marco; Overend, Mauro

doi:10.1201/b16499-103

Cited by 8 publications

(14 citation statements)

References 4 publications

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“… Cumulative probability function of the heat‐treated glass plates tested by Zaccaria and Overend for different Weibull parameters…”

Section: Comparison With Experimentssupporting

confidence: 87%

“…Zaccaria and Overend have recently tested annealed, heat treated and chemically tempered glass plates, with the aim of investigating the mechanical behavior of bitreated glass. In particular, the authors measured the strength of annealed and fully tempered glass plates under a CDR configuration, with the diameters of the loading and supporting rings, respectively, 51 and 127 mm.…”

Section: Comparison With Experimentsmentioning

confidence: 63%

“…For the pristine annealed glass strength, the authors record a value of the 50% fractile of the order of 101 MPa, indeed a value much lower than the one (161 MPa) that can be calculated from the data analyzed in a previous work, corresponding to a standard commercial glass. We do not know if this datum has been erroneously reported in Zaccaria and Overend, but in any case, although the average of the surface residual stresses for the fully tempered glass was 117 MPa with standard deviation 7 MPa, the mean failure stress value was found to be 288 MPa, a value much higher than what should be expected from a formula of the type (7).…”

Section: Comparison With Experimentsmentioning

confidence: 99%

“…Such parameters take into account the effective area

A_{eff}

of the specimen according to the expressions (3) and (4). For what concerns the prestress state, following Zaccaria and Overend we have considered μ=117 MPa and σ=7 MPa in expression (6).…”

Section: Comparison With Experimentsmentioning

confidence: 99%

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Statistical interference of material strength and surface prestress in heat‐treated glass

Pisano

Royer-Carfagni

2016

J Am Ceram Soc

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It is customary to assume that the characteristic design value for heat‐treated glass is represented by the sum of the characteristic values of the annealed glass strength and of the heat‐induced surface prestress, even though experiments have provided evidence that the resulting strength may be much higher. Here, we investigate the statistical interference between an assumed two‐parameter Weibull distribution for the annealed glass strength and a Gaussian distribution for the surface prestress. We show how the compound distribution confirms the experimental findings and, in particular, that the type of stress induced by the applied loads, ie, uniaxial vs biaxial, has an important role. This effect, which is more relevant for “weak” than for “strong” glasses, is the mechanical counterpart of the well‐known principle of diversification of investments in economy, and leads to a critical consideration of the design approach commonly suggested by structural standards.

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“… Cumulative probability function of the heat‐treated glass plates tested by Zaccaria and Overend for different Weibull parameters…”

Section: Comparison With Experimentssupporting

confidence: 87%

Section: Comparison With Experimentsmentioning

confidence: 63%

Section: Comparison With Experimentsmentioning

confidence: 99%

“…Such parameters take into account the effective area

A_{eff}

of the specimen according to the expressions (3) and (4). For what concerns the prestress state, following Zaccaria and Overend we have considered μ=117 MPa and σ=7 MPa in expression (6).…”

Section: Comparison With Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Statistical interference of material strength and surface prestress in heat‐treated glass

Pisano

Royer-Carfagni

2016

J Am Ceram Soc

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“…18 The potential of SCALP-05 to measure stresses along the thickness of glass was also exploited in the literature: for instance, stresses up to a depth of ;2.2 mm were determined in float, tempered and chemically toughen glass specimens. 20 The research presented in the literature suggests the potential of SCALP-05 to measure residual stresses present in float glass, and as it will be shown in the latter half of this article, the results of SCALP-05 were used to validate the predictions of the contour method/eigenstrain hybrid model proposed in this article.…”

Section: Experimental Investigations Of Residual Stress In Glassmentioning

confidence: 99%

An experimentally validated contour method/eigenstrains hybrid model to incorporate residual stresses in glass structural designs

Achintha

Balan

2015

The Journal of Strain Analysis for Engineering Design

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Contour method-based finite element models together with knowledge of the surface deformation resulted from the stress relaxation along a newly cut-plane were used to construct the residual stresses in commercially available float glass. The results show that the residual stress depth profile of float glass is parabolic. The constructed residual stress profiles, validated to some extent against results of scattered light polariscope experiments, were then used to establish the misfit strains (i.e. eigenstrains) existed in the original glass specimens. It is shown that despite the modelling uncertainty of the contour method and the limitations associated with the scattered light polariscope measurements, the eigenstrain depth profile in a given float glass specimen can be determined to an acceptable accuracy. The article shows that once the underlying eigenstrain distribution in a given thickness of glass has been determined, the complete residual stress distribution can simply be determined by incorporating the eigenstrain profile as a misfit strain in an appropriate finite element model. It is also shown that the hybrid contour method/eigenstrain model enables modelling the residual stress around stress concentration features such as holes and/or stress evolution during subsequent applied loadings, by simply using the knowledge of eigenstrains.

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Assessment of Stresses in Float and Tempered Glass Using Eigenstrains

Balan

Achintha

2015

Exp Mech

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The mechanical performance of bi-treated glass

Cited by 8 publications

References 4 publications

Statistical interference of material strength and surface prestress in heat‐treated glass

Statistical interference of material strength and surface prestress in heat‐treated glass

An experimentally validated contour method/eigenstrains hybrid model to incorporate residual stresses in glass structural designs

Assessment of Stresses in Float and Tempered Glass Using Eigenstrains

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