Treatise on Materials Science and TechnologyHerbert Herman, Minoru Tomozawa, Robert H. Doremus |
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Page 189
... crack ( semiminor axis of the ellipse ) , and x is the distance from the crack tip parallel to the sample surface . Right at the tip ( x 10 ) the stress is - σ / S = 1 + 2c / a In terms of the radius of curvature p = a2 / c of the crack ...
... crack ( semiminor axis of the ellipse ) , and x is the distance from the crack tip parallel to the sample surface . Right at the tip ( x 10 ) the stress is - σ / S = 1 + 2c / a In terms of the radius of curvature p = a2 / c of the crack ...
Page 190
... ( crack length ) TABLE VI COMPARISON BETWEEN THE EXACT SOLUTION " AND THE WESTERGAARD APPROXIMATION FOR THE STRESS NEAR A CRACK TIP ( stress ) / ( applied stress ) ( σ / s ) ( y / c ) Exact Westergaard 1.0 ( crack surface ) 201 x 1.000001 ...
... ( crack length ) TABLE VI COMPARISON BETWEEN THE EXACT SOLUTION " AND THE WESTERGAARD APPROXIMATION FOR THE STRESS NEAR A CRACK TIP ( stress ) / ( applied stress ) ( σ / s ) ( y / c ) Exact Westergaard 1.0 ( crack surface ) 201 x 1.000001 ...
Page 233
... crack propagation results cannot be used to predict fatigue times reliably . Nevertheless slow crack propagation results are certainly related to fatigue and can give insight into the behavior of cracks under different conditions . A ...
... crack propagation results cannot be used to predict fatigue times reliably . Nevertheless slow crack propagation results are certainly related to fatigue and can give insight into the behavior of cracks under different conditions . A ...
Contents
Water in Glass | 75 |
Applications | 121 |
Gel Method for Making Glass | 129 |
Copyright | |
15 other sections not shown
Common terms and phrases
acid activation energy adsorption alkali alkoxide alkoxide method alkoxide solution annealing point atoms autoclave Bartholomew bead seal BK7 glass bond borosilicate borosilicate glass bulk glass calculated Ceram Chem chemical components crack propagation crack tip crystals curve density dependence desorption diameter distribution Dunken effect elastic energy equation etching experimental failure film flaws fused silica geometry glass fibers glass surface H₂O heating Hillig hydrated hydrolysis hydrosilicate increase ions layer liquid load material measured melting metal alkoxides mole Na2O Non-Cryst OH groups Pavelchek and Doremus Phys powders Pyrex ratio reaction refractive index Rekhson samples sandwich seal Section set point shown in Fig shows silicate glasses SiO2 SiO2 glass soda-lime glass Solids spectra static fatigue strain stress release structure Table technique temperature tensile stress thermal expansion TiO2 tion tip radius values vapor Varshneya velocity viscosity water content Wiederhorn Young's modulus ZrO2