A ductile material has four distinct bahviors as it is loaded. They are , , and .
A ductile material has four distinct bahviors as it is loaded. They are , , and .
A ductile metal becomes harder and stronger as it is subjected to cold working
A ductile metal becomes harder and stronger as it is subjected to cold working
“Brittle fracture”和“Ductile Fracture ”的含义分别是
“Brittle fracture”和“Ductile Fracture ”的含义分别是
重结晶过程中，力学性能会发生什么改变? A: harder B: weaker C: more ductile D: softer
重结晶过程中，力学性能会发生什么改变? A: harder B: weaker C: more ductile D: softer
Among the main failure modes of the inclined section in flexural members, the inclined tension failure and the inclined compression failure belong to brittle failure, and the shear-compression failure belongs to ductile failure.
Among the main failure modes of the inclined section in flexural members, the inclined tension failure and the inclined compression failure belong to brittle failure, and the shear-compression failure belongs to ductile failure.
Which of the following describes a material with high compressive strength but lowtensile strength A: tough B: B. brittle C: C. ductile D: D. malleable E: E. resilient
Which of the following describes a material with high compressive strength but lowtensile strength A: tough B: B. brittle C: C. ductile D: D. malleable E: E. resilient
( ) is not true A: particles of a hard and stiff material added to a ductile matrix increase its ductility and stiffness B: plywood is a laminated composite C: laminated composite was used in aerospace structure D: Diameters of fiber used in composite are in the range of 1μm to 100μm.
( ) is not true A: particles of a hard and stiff material added to a ductile matrix increase its ductility and stiffness B: plywood is a laminated composite C: laminated composite was used in aerospace structure D: Diameters of fiber used in composite are in the range of 1μm to 100μm.
Which of the following is not the reason why concrete needs reinforcement? A: Reinforcement has good tensile resistance, while concrete has good compressive resistance. B: Reinforcement has good compressive resistance as concrete. C: Engineers prefer ductile failure to brittle failure of the members. D: Reinforcement and concrete can work together to increase the bearing capacity of the members.
Which of the following is not the reason why concrete needs reinforcement? A: Reinforcement has good tensile resistance, while concrete has good compressive resistance. B: Reinforcement has good compressive resistance as concrete. C: Engineers prefer ductile failure to brittle failure of the members. D: Reinforcement and concrete can work together to increase the bearing capacity of the members.