1. The stress that drives dislocations and thus deforms materials' shape is: A. Tensile stress B. Compressive stress C.

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1 The Stress That Drives Dislocations And Thus Deforms Materials Shape Is A Tensile Stress B Compressive Stress C 1 (53.67 KiB) Viewed 46 times

1. The stress that drives dislocations and thus deforms materials' shape is: A. Tensile stress B. Compressive stress C. Shear stress D. Von Mises stress The correct answer is: 2. Stress concentration in front of a crack's tip significantly affects materials' fracture behavior as well as streng ductility and fracture toughness. Stress concentration happens in which stress condition: A Tensile stress B. Compressive stress C. Shear stress D. Von Mises stress The correct answer is: 3. Stress concentration in front of a crack's tip significantly affects materials fracture behavior as well as streng ductility and fracture toughness. The intensity of stress concentration depends on: A The amount of an extemal stress B. The type of materials C. The length of a crack D. The sharpness of a crack The correct answer is: Hydrogen bond is not a type of chemical bond. It belongs to which category of chemical bond: A. Metallic bond. B. Ionic bond c. Covalent bond. D. Van der Waals bond. The correct answer is: In general, metals with which crystal structure has the best ductility: A. Body center cubic (BCC). B. Face center cubic (FCC). C. Hexagonal close packed (HCP). The correct answer is: Twinning is a type of plastic deformation. Twins generally do not happen in the materials with: A. Body center cubic (BCC) crystal structure. B. Face center cubic (FCC) crystal structure. C. Hexagonal close packed (HCP) crystal structure. The correct answer is: