Deformation and Fracture Mechanics of Engineering MaterialsUpdated to reflect recent developments in our understanding of deformation and fracture processes in structural materials. This completely revised reference includes new sections on isostress analysis, modulus of rupture, creep fracture micromechanicsms, and many more. |
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Page 466
Richard W. Hertzberg. 13.1 STRESS AND CRACK LENGTH CORRELATIONS WITH FCP Crack propagation data may be obtained from a number of specimens such as many of those shown in Fig . 8.7 . Starting with a mechanically sharpened crack , cyclic ...
Richard W. Hertzberg. 13.1 STRESS AND CRACK LENGTH CORRELATIONS WITH FCP Crack propagation data may be obtained from a number of specimens such as many of those shown in Fig . 8.7 . Starting with a mechanically sharpened crack , cyclic ...
Page 470
... Crack length- 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Length ( mm ) ( a ) FIGURE 13.4 Crack length versus time plots revealing crack growth rate behavior in 7079 - T6 aluminum alloy . ( a ) Linear load shedding to ...
... Crack length- 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Length ( mm ) ( a ) FIGURE 13.4 Crack length versus time plots revealing crack growth rate behavior in 7079 - T6 aluminum alloy . ( a ) Linear load shedding to ...
Page 471
... Length ( mm ) ( b ) FIGURE 13.4 ( Continued ) Most interestingly , the stress intensity factor is observed to be large when the crack length is small but decreases with increasing crack length . Consequently , one would predict that if ...
... Length ( mm ) ( b ) FIGURE 13.4 ( Continued ) Most interestingly , the stress intensity factor is observed to be large when the crack length is small but decreases with increasing crack length . Consequently , one would predict that if ...
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alloy aluminum alloy American Society applied stress associated ASTM STP atoms behavior brittle Burgers vector Chapter Charpy component crack growth rate crack length crack tip craze crystal crystalline cycles decreasing defined depends ductility effect elastic embrittlement engineering environment assisted cracking example failure FIGURE flaw fracture mechanics fracture surface fracture toughness given grain boundary hydrogen initial KIEAC lattice load Materials from copyright metallurgical microstructure modulus MPa Vm notch occur orientation parameter plane strain plane stress plastic deformation plastic zone plate polymer properties R. W. Hertzberg region relationship relative Reprinted with permission response result sample screw dislocation Section sensitivity shear stress shown in Fig slip plane slip systems specimen stacking fault energy strain hardening strain rate stress concentration stress intensity factor stress level stress-strain curve striation Table test temperature Testing and Materials texture thickness Trans transition temperature twin values yield strength