借物喻人作文800字

機械類(lèi)筆試試題

1. Briefly describe what is blanking(cutting), forming, coining and emboss ing in stamping process.

2. What is metal clading?

3. What is the purpose of adding glass fiber to thermoplastic material?

4. In contrast with metal and thermoplastic material,which has a higher co efficient of thermal expansion(CTE).

5. The most suitable material for a integral hinge design (typical plastic thickness=0.25 to 0.5mm at hinge)

6. Can a bending load makes both compressive and tensile stress in a membe r?

7. What is the design criteria used in plastics catch/snap?

8. What is FEA?

9. Why is natural frequency important in vibration analysis?

10. What is the deflection equation of a cantilever beam fixed at one edge

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