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 219
... fiber.48-50 Indeed , this has been partially accomplished . Highly oriented and extended commercial fibers , such as DuPont Kevlar , possess a tensile 60 60 Stress ( MPa ) 40 20 20 0 DEFORMATION RESPONSE OF ENGINEERING PLASTICS / 219.
... fiber.48-50 Indeed , this has been partially accomplished . Highly oriented and extended commercial fibers , such as DuPont Kevlar , possess a tensile 60 60 Stress ( MPa ) 40 20 20 0 DEFORMATION RESPONSE OF ENGINEERING PLASTICS / 219.
Page 221
... fiber and others . TABLE 6.6 Tenacity of Selected Fibers Tenacity Material Total Elongation Ref . ( g / denier ) ( % ) Steel ~ 4 ~ 8 50,51 Glass ~ 10 ~ 3 50,51 Spider silk ~ 8 ~ 30 51 ( drag line ) DuPont Kevlar ~ 25 Monsanto X - 500 ...
... fiber and others . TABLE 6.6 Tenacity of Selected Fibers Tenacity Material Total Elongation Ref . ( g / denier ) ( % ) Steel ~ 4 ~ 8 50,51 Glass ~ 10 ~ 3 50,51 Spider silk ~ 8 ~ 30 51 ( drag line ) DuPont Kevlar ~ 25 Monsanto X - 500 ...
Page 431
... fibers , where the applied stress is greater than o ' . Since the stress at the outer fiber in bending is Mr I ( 12 ... fiber the flexural stress decreases to o ' when one moves a distance Ar from the outer surface , so that and o ' Mr ...
... fibers , where the applied stress is greater than o ' . Since the stress at the outer fiber in bending is Mr I ( 12 ... fiber the flexural stress decreases to o ' when one moves a distance Ar from the outer surface , so that and o ' Mr ...
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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 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 tensile test temperature Testing and Materials texture thickness Trans transition temperature twin values yield strength