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In the context of injection molding, can you explain the difference between a slide and a lifter? Specifically, how do they operate, and in what situations would you use each mechanism?
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1
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1170
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June 17, 2024
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What are considerations for designing an injection molded part, like on the back-paneling of a consumer product?
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1
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1090
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June 14, 2024
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A beam is made from two cylinders, where the inner cylinder is steel and the outer cylinder is aluminum. Which cylinder will yield first if beam is a simply supported cantilever beam?
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1
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1664
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April 2, 2024
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You have a concentrated load at the center of a beam with two point supports on either end. Describe the shear force and bending moment diagram
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2
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2575
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March 3, 2024
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On which side of a wall-mounted cantilever beam induced with a point load will it fail?
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5
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17231
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February 27, 2024
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You have a cantilever beam, to minimize deflection, you add a support elbow. Would you add this to the top or bottom? Why?
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1
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7500
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April 24, 2022
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You have two identical bolts and nuts torqued to the same spec clamping two faces together. One bolt is lubricated while the other is not. What is the clamp load of each bolt?
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2
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2631
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February 14, 2024
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Two concentric tubes, where the inner tube is made of aluminum and outer tube is steel, are assembled vertically with a mass on top. Which tube will see more deflection?
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4
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2415
|
February 4, 2024
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You have 5kg of Aluminum and 5kg of Steel. You can make whatever cross section beam you want with these materials. If you have to make a cantilever beam 1m long with a load at the end and you want to minimize the deflection. What material would you use?
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8
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7636
|
February 2, 2024
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If you had to pressurize a pressure vessel in testing, would you rather pressurize with liquid or gas and why?
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1
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2352
|
January 21, 2024
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What are the different ways you can identify if a part is steel or aluminum?
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1
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5812
|
August 5, 2020
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What are common DFM guidelines for Sheet Metal Design, and how would you stiffen a part made from sheet metal?
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1
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2256
|
January 5, 2024
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Can you describe the injection molding manufacturing process?
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1
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1574
|
January 5, 2024
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On the material datasheet of most polymers, the glass transition temperature, Tg, is provided. What does the glass transition temperature refer to?
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1
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1816
|
January 5, 2024
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When parts are designed, how do you ensure the manufacturer is building what you intended to design?
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1
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1586
|
January 5, 2024
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Motor Sizing - Torque & Power Calculations + Safety Considerations
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0
|
866
|
December 11, 2023
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Truss Loading: Force Calculation & Displacement
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0
|
983
|
December 11, 2023
|
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What are the three laws of thermodynamics?
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1
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23168
|
August 2, 2020
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If you had designed this rear cover, what are 5 tests that you would conduct on the completed iPod Touch assembly to ensure that your rear cover design met all applicable requirements? Why?
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2
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3345
|
February 15, 2022
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What are the major design considerations for optimizing airflow?
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1
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1663
|
September 18, 2023
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If there is a diving board, how would you half the deflection?
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1
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2071
|
July 31, 2021
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When should you counterbore vs. countersink a hole?
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1
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2368
|
July 31, 2021
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What are the different types of stress & force a material can endure?
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1
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4618
|
August 3, 2021
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Is a pressure vessel more likely to fail from repeated cycles of low pressure or a one off high pressure spike?
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1
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1747
|
August 12, 2021
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Why does a computer/office chair have fives legs? Why does a chair have four?
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1
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1966
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September 15, 2023
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Imagine a dashed line down a mile length of a straight road. Explain how you would calculate the volume of paint required for this mile stretch of road
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1
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1810
|
September 15, 2023
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How would you measure air pressure of an airplane?
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0
|
1306
|
October 3, 2020
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Brainstorm 15-20 ways to remove balloons from a room
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0
|
2428
|
October 26, 2022
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Describe the failure theories for brittle and ductile materials
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0
|
1290
|
August 10, 2021
|
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How would you design an automated sticker peeler?
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0
|
1138
|
August 10, 2021
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