Glass, Volume 22 |
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Page 189
As a rough approximation one can think of two factors that cause a high stress at
the tip of the crack : a force “ moment ” ' caused by the depth of the crack , and an
intensification of the moment depending upon the sharpness of the tip .
As a rough approximation one can think of two factors that cause a high stress at
the tip of the crack : a force “ moment ” ' caused by the depth of the crack , and an
intensification of the moment depending upon the sharpness of the tip .
Page 197
These criteria are based on Griffith ' s calculation of the strain energy change in a
stressed material caused by a crack . ... is high enough to cause propagation by
Eq . ( 11 ) , but propagation cannot occur because Sy is lower than calculated ...
These criteria are based on Griffith ' s calculation of the strain energy change in a
stressed material caused by a crack . ... is high enough to cause propagation by
Eq . ( 11 ) , but propagation cannot occur because Sy is lower than calculated ...
Page 201
As described in Section II , pressing a hard sphere against a glass surface
causes a ring crack and then a cone crack . In some cases the ring cracks appear
to start at preexisting flaws and then propagate ( Frank and Lawn , 1967 ) .
However ...
As described in Section II , pressing a hard sphere against a glass surface
causes a ring crack and then a cone crack . In some cases the ring cracks appear
to start at preexisting flaws and then propagate ( Frank and Lawn , 1967 ) .
However ...
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Contents
Water in Glass | 75 |
Applications | 121 |
Gel Method for Making Glass | 129 |
Copyright | |
11 other sections not shown
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Common terms and phrases
acid addition adsorption alkali alkoxide analysis applied atoms band Bartholomew bond bulk calculated cause Ceram Chem chemical clusters coefficient components composition concentration constant contraction crack crystals curve decrease dependence depth determination developed discussed distribution Doremus effect energy equation et al example expansion experimental failure fatigue fibers formation formed fracture function geometry give given glass surfaces groups heating higher hydrated hydrolysis hydrosilicate important increase influence ions Kamiya layer lead length load lower material mean measured melting metal method mole observed obtained occurs oxide phase Phys possible prepared pressure processes produced propagation properties range ratio reaction region samples seal shown in Fig shows silicate glasses SiO2 soda-lime Solids solution strain strength stress structure studies Table technique temperature thermal tion values vapor viscosity water content
Bibliographic information
| Title | Glass, Volume 22 Glass, Minoru Tomozawa Volume 12 of Treatise on materials science and technology |
| Editors | Minoru Tomozawa, R. H. Doremus |
| Publisher | Academic Press, 1977 |
| Original from | the University of Michigan |
| Digitized | 29 Nov 2007 |
| ISBN | 0123418127, 9780123418128 |
| Export Citation | BiBTeX EndNote RefMan |