【English of Mechanical Engineering】
机械英语
每周一课
通知:我非常后悔之前沒有把DOC格式的所有《English of Mechanical Engineering》課程保存到我的WORD中，結果那些課程現在在已經不存在了。為了繼續大傢的課程，我找了一些比較專業的東西繼續咱們的課程！从本周起咱們开始进入较为专业的学习！
Lesson 3
Difference Between Material And Matter
(区分材料与物质)
4月14日~4月20日
第三课
特别感谢:
finley1984
Materials Science and Engineering
Materials Science 材料科学
-- The relationships that exist between the structures and properties of materials.
Materials Engineering 材料工程
-- On the basis of the structures –property correlations, designing or engineering the
structures of a material to produce a predetermined set of properties (Material Science
and Engineering)
MSE 投影片
structure 结构– the arrangement of the internal components of the material .
(dimensions of material science ) -> microscopic (尺度投影片)
property ,性质 – A material characteristics in terms of the kind and magnitude of
response to a specific imposed stimulus .
Processing══►Structure══►Properties══►Performance
The four components of the discipline of materials science and engineering and their linear interrelationship.
(具体见附件图片)
Mechanical – (load force) <->(deformation)
Electrical – (electric field)<->conductivity
Thermal – Heat <-> heat capacity
Magnetic – magnetic field
deteriorative 腐蚀性质 chemical reactivity of material
Why do we study materials?
To solve a design problem involving materials.
1-5
Material selection criteria
(1) The in-service conditions must be characterized.
-trade off one characteristic for another.
(2) Deterioration of material properties that may occur during service operation.
(3) Economics.
Classification of Materials
Based on metals:
Solid :(chemical makeup ;Atomic structure)
Metals:(ceramics 陶瓷 ;oxide,nitride,carbide ;polymers 高分子)
Composites 复合材料—consist of more than one material type FRP
环保回收问题
Semiconductor 半导体 –IC组件
Biomaterials
Advanced Materials
IV. Modern Material Needs
Energy – solar cell
Nuclear energy –fuel to containment structures to facilitate the disposal of waste.
Environment problem –pollution control.
Transportation –high strength –low density, high –temperature endurance
Developed new materials having comparable properties and less adverse
environmental impact.
Vocabulary
Materials Science 材料科学
Materials Engineering 材料工程
MSE 投影片
structure 结构
(dimensions of material science ) -> microscopic (尺度投影片)
property ,性质
deteriorative 腐蚀性质
ceramics 陶瓷
polymers 高分子
Composites 复合材料
Semiconductor 半导体 –IC组件
containment围阻体
最后由 Honey 前辈 于 2008-04-04 21:03:05编辑
Selection
