Problem 1 is on performance specification. It is about what kind of performance customers expect without knowing the design. Lectures do not cover the details. Our textbook “Design for Reliability” covers this on page 7.
Since some of you may not have the textbook, here is the listing of performances from the textbook. Make a statement on each from customers point of view. The customer may not need all of these. May be the customers like to have some new requirement not on this list.
Functions of the product
Range of applications
Range of environments
Duty cycles during life
Robustness for user or servicing mistakes
Internal interface requirements
External interface requirements
Shipping and handling capabilities
Serviceability and diagnostics capabilities
Prognostics health monitoring
Usability on other products
I would add one more feature (slide 5 of lecture 3): defining what the product “should not do”. You can also interpret as “what the product shall not do”. Remember sudden acceleration on millions of Toyota cars? The performance specification should have said: There shall be no sudden acceleration.