手机测试 ppt课件.ppt

Introduction of GE design guide
Test methods
May/28/2001
手机测试
Mechanical testing
Thermal test
Flammability testing
Electrical testing
Physical testing
Rheological testing
精品资料
你怎么称呼老师？
如果老师最后没有总结一节课的重点的难点，你是否会认为老师的教学方法需要改进？
你所经历的课堂，是讲座式还是讨论式？
教师的教鞭
“不怕太阳晒，也不怕那风雨狂，只怕先生骂我笨，没有学问无颜见爹娘 ……”
“太阳当空照，花儿对我笑，小鸟说早早早……”
手机测试
Tensile strength, strain, and modulus
• Multi-Purpose Test Specimen(MPTS)
Stress - Strain Diagram
Tensile strength, strain, and modulus
• Speeds of testing
Speed A – 1mm/min – tensile modulus
Speed B – 5mm/min – tensile stress/strain for glass filled resins
Speed C – 50mm/min – tensile stress/strain for unfilled resins
Flexural strength and modulus
Flexural stress and modulus
Flexural stress S = 3 F l / (2b h2)
Flexural modulus E = s l 3 / (4 b h3)
F maximum load (N) exerted on the sample.l the distance (mm) between the supports.b the width (mm) of the sample h the height (mm) of the sample s slope of the initial straight line portion of the load –
deflection curve, N/mm of deflection.
Table Abrasion resistance

measure the loss
mass in
mg/1000 cycles