Influence of dissolution rate on crack growth and fatigue of Na2O-Al2O3-B2O3 SiO2 glasses

Gehrke, E.; Hähnert, M.; Ullner, Christian

doi:10.1007/bf01132392

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…The surface stress relaxation can also explain phenomena that are otherwise not yet understood. It was already predicted that surface stress relaxation plays an important role in slow crack growth and the static fatigue limit, the coaxing phenomenon, subcritical crack growth strengthening, reverse dynamic fatigue, and ion‐exchange strengthening . In fact, surface stress relaxation was recently employed to solve the mystery of the presence of a subsurface compression maximum in ion‐exchanged glass .…”

Section: Looking Forwardmentioning

confidence: 99%

An Overview of the Strengthening of Glass Fibers by Surface Stress Relaxation

Lezzi

Tomozawa

2015

Int J of Appl Glass Sci

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Pristine glass fiber is well known to become mechanically weaker when heat-treated in the presence of water vapor. However, recently, the same fiber was found to become stronger if heat-treated while held under a subcritical tensile stress at a temperature below the glass transition temperature. The added strength was attributed to the formation of a surface compressive layer on the glass created by a surface stress relaxation process that occurred while being held under the tensile stress in air. Silica glass fibers with strengths estimated to be~7-8 GPa were produced, exceeding the~5.5 GPa strength of fresh optical fiber commonly reported at room temperature in air. Similar degrees of strengthening, a 20-30% improvement, have been observed previously for E-glass and is reported here for the first time for soda-lime silicate glasses. This process is a new glass strenthening method that may be applied to all oxide glasses and is not subject to the same constraints as currently available methods.

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Section: Looking Forwardmentioning

confidence: 99%

An Overview of the Strengthening of Glass Fibers by Surface Stress Relaxation

Lezzi

Tomozawa

2015

Int J of Appl Glass Sci

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“…This stress is known as the fatigue limit [17]. Correspondingly, some glasses exhibited a higher strength under very low stressing rates during the dynamic fatigue testing [18]. Another manifestation of the same phenomenon is the excessive slowing down of the crack growth under lower stress intensity.…”

Section: Introductionmentioning

confidence: 98%

Surface stress relaxation and resulting residual stress in glass fibers: A new mechanical strengthening mechanism of glasses

Tomozawa

Lezzi

Hepburn

et al. 2012

Journal of Non-Crystalline Solids

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“…Based on several studies, [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] we calculated the fracture surface energy with the fracture toughness and elastic modulus of glasses obtained from the literature values on the alkali silicate, alkali-earth silicate and borosilicate glass systems (Fig. 4).…”

Section: Resultsmentioning

confidence: 99%