Latest Mechanical Design topics

Topic	Replies	Views	Activity
About the Mechanical Design category	0	175	September 13, 2023
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? general , tesla	2	1299	February 14, 2024
Walk me through the different materials used on the visible exterior of your phone, why those specific materials might be used, and how they are manufactured apple , manufacturing , general , htc	1	1385	January 25, 2024
If you had to pressurize a pressure vessel in testing, would you rather pressurize with liquid or gas and why? spacex , firefly	1	1442	January 21, 2024
Truss Loading: Force Calculation & Displacement zipline	0	213	December 11, 2023
What are the major design considerations for optimizing airflow?	1	1038	September 18, 2023
What are the different types of stress & force a material can endure?	1	2097	August 3, 2021
Is a pressure vessel more likely to fail from repeated cycles of low pressure or a one off high pressure spike?	1	1225	August 12, 2021
Why does a computer/office chair have fives legs? Why does a chair have four?	1	1128	September 15, 2023
How would you tolerance a touch screen assembly to the mounting chassis of a smart phone? apple	0	1149	January 17, 2023
How would you design an automated sticker peeler?	0	740	August 10, 2021
Draw a commuter bike-label every single part on it. Explain what it’s job is and why it is designed that way general , spinlaunch	0	835	August 6, 2020
iPhone Home Button: How would you design the mechanism of the home button? apple	0	1405	April 17, 2022
If you were asked to design an electric toothbrush, a mining truck, and a satellite to be launched in to space, what considerations would you have for each?	0	566	January 24, 2023
What type of tests would you conduct on a solid state drive? zoox , mechanical-testing	0	753	January 4, 2021
What techniques are used to mitigate rotational vibration on a hard disk? facebook	0	1290	August 8, 2020
Your device has a stylus. How do you store it? How do you charge it? What kind of things can you use it for? microsoft	0	622	August 8, 2020
What are critical dimensions necessary in the tolerance stack-up/loop to minimize the part gap? square	0	541	August 2, 2023
Explain the types of tests you would conduct on an Oculus Rift facebook , square	0	836	September 2, 2020
Describe how you would design a mounting for a resistor?	0	538	January 24, 2023
How do you test for waterproofing on consumer electronic products (smart phone, tablet, etc)? apple	3	1669	August 28, 2023
What are seven ways to bond plastic and metal?	2	1028	June 15, 2023
Describe how you approach material selection/design for a component where strength is critical, and how you would approach a different component where stiffness is critical? apple , spacex	2	2479	May 28, 2022
A garden hose has stopped flow. There is constant static pressure and no water hammer. Why does the hose tear in the axial direction at the end of the hose? spinlaunch , spacex	2	1535	April 24, 2022
What are the key parameters to consider when selecting a fan for forced airflow? heat-transfer	2	1398	February 17, 2022
How would you design a snap fit? Where are snap fits used most often? How much force does it usually take to insert a snap fit?	1	1399	February 16, 2022
Name all the ways of actuating an object you can think of. What are the pros and cons of each?	2	1269	February 15, 2022
You have a long slender vertical member with a compressive force on one end, what if the dominant failure mode?	2	1554	February 15, 2022
There are three buckets with water, air, and gasoline. If you put a sensor in the buckets, what type of sensing technology would you use to tell them apart?	1	1220	November 29, 2021
For the following joints (images) describe the forces and failure modes of the bolted connections. Why is pretensioning the bolts important? What would fatigue failure look like for the bolted connections?	1	1269	August 12, 2021