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A probability model for evaluating the effectiveness of the Heat Soak Test

A probability model for evaluating the effectiveness of the Heat Soak Test The potential presence of Nickel Sulfide (NiS), which contaminates glass melt, can provoke “spontaneous” rupture even after years from installation. This is why most standards recommend that glass panels bearing a safety risk are subjected to the Heat Soak Test (HST): they are exposed to a certain temperature for a certain time so to destroy the glass panes affected by critical NiS inclusions before installation. A micro-mechanically motivated model for assessing the risk of spontaneous failure of thermally-treated glass is here proposed. This correlates the statistical expectation of finding a critical NiS inclusion with the breakage consequent to its volumetric expansion due to phase transformation. Three functions à la Weibull for the probability of spontaneous rupture during lifetime are derived for the case of no HST, short HST and long HST. This analysis may contribute to solve the long-standing problem of defining the risk of spontaneous breakage in glass due to NiS inclusions, by assessing the optimal holding time of the HST as a function of the risk reputed acceptable for the particular application of glass. A parametric analysis shows the potentiality of the proposed approach. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Glass Structures & Engineering Springer Journals

A probability model for evaluating the effectiveness of the Heat Soak Test

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Publisher
Springer Journals
Copyright
Copyright © 2019 by Springer Nature Switzerland AG
Subject
Engineering; Building Construction and Design; Structural Materials; Building Materials
ISSN
2363-5142
eISSN
2363-5150
DOI
10.1007/s40940-019-00101-w
Publisher site
See Article on Publisher Site

Abstract

The potential presence of Nickel Sulfide (NiS), which contaminates glass melt, can provoke “spontaneous” rupture even after years from installation. This is why most standards recommend that glass panels bearing a safety risk are subjected to the Heat Soak Test (HST): they are exposed to a certain temperature for a certain time so to destroy the glass panes affected by critical NiS inclusions before installation. A micro-mechanically motivated model for assessing the risk of spontaneous failure of thermally-treated glass is here proposed. This correlates the statistical expectation of finding a critical NiS inclusion with the breakage consequent to its volumetric expansion due to phase transformation. Three functions à la Weibull for the probability of spontaneous rupture during lifetime are derived for the case of no HST, short HST and long HST. This analysis may contribute to solve the long-standing problem of defining the risk of spontaneous breakage in glass due to NiS inclusions, by assessing the optimal holding time of the HST as a function of the risk reputed acceptable for the particular application of glass. A parametric analysis shows the potentiality of the proposed approach.

Journal

Glass Structures & Engineering – Springer Journals

Published: Jul 11, 2019

References

  • A statistical model for the failure of glass plates due to nickel sulphide inclusions
    Bonati, A; Pisano, G; Royer Carfagni, G
  • Glass breaks like metal, but at the nanometer scale
    Célarié, F; Prades, A; Bonamy, D; Ferrero, L; Bouchaud, W; Guillot, C; Marliére, C
  • Stress-corrosion mechanisms in silicate glasses
    Ciccotti, M
  • Environmentally enhanced fracture of glass: a historical perspective
    Freiman, SW; Wiederhorn, SM; Mecholsky, JJ
  • Fracture of silicate glasses: ductile or brittle?
    Guin, JP; Wiederhorn, SM
  • Surfaces formed by subcritical crack growth in silicate glasses
    Guin, JP; Wiederhorn, SM
  • Spontaneous fracture in thermally strengthened glass—a review and Outlook
    Karlsson, S
  • Spontaneous cracking of thermally toughened safety glass. Part one: properties of nickel sulphide inclusions
    Kasper, A
  • Spontaneous cracking of thermally toughened safety glass. Part three: statistic evaluation of field breakage records and consequences for residual breakage probability
    Kasper, A
  • Spontaneous cracking of thermally toughened safety glass. Part two: nickel sulphide inclusions identified in annealed glass
    Kasper, A; Pyeonglae, N; Yuan, Z
  • Fracture of Brittle Solids
    Lawn, BR
  • Zum verhalten des nickelsulfids im glas
    Merker, L
  • Mechanism of brittle rupture
    Murgatroyd, JB
  • Strength of new heat treated window glass lites and laminated glass units
    Norville, HS; Sheridan, DL; Lawrence, SL
  • Nano-ductile crack propagation in glasses under stress corrosion: spatiotemporal evolution of damage in the vicinity of the crack tip
    Prades, S; Bonamy, D; Dalmas, D; Bouchaud, E; Guillot, C
  • Nickel sulphide inclusions in glass: an example of microcracking induced by a volumetric expanding phase change
    Swain, MV
  • Stress corrosion reaction of silica glass and water
    Tomozawa, M
  • A statistical theory of the strength of materials
    Weibull, W
  • Plastic flow-slow crack-propagation and static fatigue in glass
    Weidmann, GW; Holloway, DG
  • Influence of water vapor on crack propagation in soda-lime glass
    Wiederhorn, SM
  • Fracture surface energy of glass
    Wiederhorn, SM
  • Stress corrosion and static fatigue of glass
    Wiederhorn, SM; Bolz, LH
  • Effects of water and other dielectrics on crack growth
    Wiederhorn, SM; Freiman, SW; Fuller, ER; Simmons, CJ