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Ductile materials can stand large plastic deformation without fracture.
发布时间:
2024-05-11 16:46:23
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相关试题
1.
12判断Ductile materials can stand large plastic deformation without fracture.选项: A:正确; B:错误
2.
12判断Ductile materials can stand large plastic deformation without fracture. 选项: A:正确; B:错误
3.
What's true about the fracture is that ( ).选项: A:Brittle material fracture fibrous.; B:Ductile materials have no obvious plastic deformation before fracture.; C:The fracture of the ductile material is crystalline and shiny.; D:The fracture of brittle materials is crystalline or porcelain.
4.
The percent( ) is the percentage of plastic stain at fracture. 选项:A、 reduction|B、 elongation|C、 production|D、 deformation
5.
A material that experiences very little or no plastic deformation at fracture is termed as ( ). 选项:A、elastic B、ductile C、brittle D、ferromagnetism
6.
The following statement about fatigue is true ( ). 选项: A、The stress of fatigue is higher than the yield strength of static load. B、Obvious plastic deformation can be observed at fatigue fracture. C、Fatigue fracture can be divided into fatigue source, bright area, rough area. D、The occurrence of fatigue fracture is premonitory and is called brittle fracture.
7.
A material that experiences very little or no plastic deformation at fracture is termed as ( ). 选项: A、 elastic B、 ductile C、 brittle D、 ferromagnetism
8.
A material that experiences very little or no plastic deformation at fracture is termed as ( ). 选项:A、 elastic|B、 ductile|C、 brittle|D、 ferromagnetism
9.
The following statement about fatigue is true ( ).选项: A:The stress of fatigue is higher than the yield strength of static load.; B:Obvious plastic deformation can be observed at fatigue fracture.; C:Fatigue fracture can be divided into fatigue source, bright area, rough area.; D:The occurrence of fatigue fracture is premonitory and is called brittle fracture.
10.
Plastic deformation can break the crystal grains of metal materials and ( ).选项: A:increase the toughness; B:decrease the dislocation density; C:increase the plasticity; D:increase the dislocation density
11.
( ) is an important means of strengthening metal materials.选项: A:elastic deformation; B:plastic deformation; C:stretching; D:fibrous structure
12.
Compared with plastic materials, the biggest characteristic of the tensile mechanical properties of brittle materials is . 选项: A:Low intensity; B:Small deformation under the same tension; C:There is almost no plastic deformation before fracture; D:The stress-strain relationship strictly follows Hooke's law
13.
Preexisting micro cracks such as those found in sintered materials and large welded structures tend to promote failure by 选项: A:fast fracture. B:plastic yielding. C:excessive creep strain. D:nonprotective oxide formation.
14.
Rock deformations usually include brittle deformation and ductile deformation.
15.
When plastic deformation occurs to metal under external force, which of the following laws can be applied to judge the maximum direction of deformation:
16.
Brittle materials have( )plastic deformation and low energy absorption before fracture 选项: A、High B、Low C、Medium D、None of the above
17.
Plastic deformation is a permanent deformation
18.
Plastic deformation is recoverable while elastic deformation is irrecoverable.
19.
plastic deformation
20.
韧度是衡量材料韧性大小的力学性能指标,是指材料断裂前吸收( )的能力。选项: A:Plastic deformation work and fracture work; B:Elastic deformation work and plastic deformation work; C:Elastic deformation work and fracture work; D:Plastic deformation work
21.
The main characteristics of fatigue rupture of metal components under the action of cyclic stress are ( )选项: A:No obvious plastic deformation, the fracture surface is divided into smooth area and coarse grained area; B:No obvious plastic deformation, the surface of the fracture is coarse-grained; C:There is obvious plastic deformation, the fracture surface is divided into smooth area and coarse grained area; D:There is obvious plastic deformation, and the fracture surface is smooth
22.
韧度是衡量材料韧性大小的力学性能指标,是指材料断裂前吸收( )的能力选项: A:Plastic deformation work and fracture work; B:Elastic deformation work and plastic deformation work; C:Elastic deformation work and fracture work; D:Plastic deformation work
23.
plastic deformation 英译汉
24.
In the most general case, we can divide the failure criteria into two big parts. One for ( ) criteria, and mostly for ductile materials, like metals.
25.
Which of the following materials can be categorized as conductor? 选项: A: Aluminum B: Styrofoam C: Wood D: Plastic
26.
名词解释:plastic deformation
27.
Plastic deformation(塑性变形)
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