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材料力学实验_lab of material mechanics

2020-07-21 14:07:54   0  举报

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低碳钢拉伸力学性能实验low carbon steel‘s tension test

仪器

万能材料试验机universal testing machine

游标卡尺vernier

低碳钢试样Low carbon steel sample

L=5.65*Aˆ0.5

测量值

下屈服强度yield strength

抗拉强度tensile strength

步骤

测量试样尺寸measure sample

准备试验机prepare the testing machine

安装试样install the sample

预拉pre-load to check if everything is all right

加载gradually add load，until it broken

测定measure

求两次断面直径section diameter

扭转实验torsion test

仪器

扭转试验机torsion testing machine

游标卡尺vernier

试样sample

测量值

切变模量shear modulus

剪切屈服极限shear yield strength

因为有大变形，截面逐渐变为塑性形变because of huge distortion，section is part by part gradually change into plastic distortion

低碳钢、铸铁扭断规律low carbon steel ／casting steel‘s twist off phenomenon

步骤

弯曲正应力实验normal stress experiment under pure bending force

仪器

简易加载设备loading equipment

数字电阻应变仪Digital resistance strain gauge

钢梁iron beam

测量值

纯弯曲正应力分布normal stress distribution under pure bending force

步骤

应变仪调零zero setting of strain gauge

联接应变片connect the strain gauge

加载，读数loading，reading number

弹性模量和泊松比的测定elasticity modulus and poisson ratio’s measure

仪器

万能材料试验机universal testing machine

数字电阻应变仪Digital resistance strain gauge

试样sample

测量值

弹性模量、泊松比Elastic modulus、poisson ration

步骤

应变仪调零zero setting of strain gauge

联接应变片connect the strain gauge

加载，读数loading，reading number

画图，求斜率plot，calculate slope

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LAB Access Work flow

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lab 11 1000

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lab 11 1001

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材料力学·弯曲内力详细思维导图

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