Introduction to Engineering Design 4th Edition Chapter 19 Introduction to Engineering Design

What you will learn Minds-on transition to Hands-on Nature of Engineering Design Not singled value answers Importance of teaming and characteristics of a good designer. Two ground rules for successful designing Need for a systematic approach Hands-on exercise – the Tower Exploring Engineering

What’s Unique about Design? Unlike homework problems, there are NO unique answers! Design is a balance of competing requirements. E.g., you could make an airplane that would be 100% safe in an accident – but it would be too heavy to fly! How do you achieve a design balance among competing criteria? Most designs are hands-on, meaning you have to build and test a working prototype. Exploring Engineering 3

Every Design Project … Teams are needed because the magnitude of most projects is too large for one person to handle A good designer is curious about how things work A good designer can manage several simultaneous tasks A good designer has a clear understanding of where to go A good designer engages all the team members A good designer pushes the team without seeming to Exploring Engineering 4

Ground Rules for any Design Use a Design Notebook* Put ideas, notes, graphs, sketches etc. in the notebook so others can follow your thinking and your design. If some competitor claims prior invention (in a legal suit or a patent contest) you will have a clear, dated, signed response that will be accepted in any court * A page numbered, margined, lined, “lab notebook” available in any office supply store, pharmacy, college book store etc. Exploring Engineering 5

Ground Rules for any Design Teaming and the team leader (if any) Team leader may be assigned or spontaneously arise from the team Team leader is a participant, not a supervisor, and leads by example Successful teams assign clear roles and work assignments Team leader fosters good internal communication in the team Shares leadership responsibilities Team decisions by consensus Exploring Engineering 6

Systematic Approach 1 Define the problem 2 Generate alternative concepts 3 Evaluate and select a concept 4 Detail the design 5 Design defense 6 Manufacture and test 7 Evaluate performance 8 Prepare the final design report Exploring Engineering 7

A Teaming Exercise – the Tower Build the tallest tower from sheets of paper Teams of about 2 - 4 people Each team has 5 sheets of std 8.5” × 11” paper Two teams get a roll of Scotch tape® Two teams get roll of duct tape Two teams get a box of paper clips Two teams get a pair of scissors Exploring Engineering 8

A Teaming Exercise – the Tower Teams have 10 minutes to complete the project One point awarded/inch of tower First finished awarded 10 points Teams indicate when they want tower measured Only supplied materials can be used Tower must be built on a flat surface After 3 minutes one individual/team will be offered 8 points to shift to another team There are teams and individual winners … Exploring Engineering 9

Post Tower Discussion Was the quality of teaming equal among teams? Within teams? Could everyone contribute in your team? Were any of the supplied materials shared among teams? Did the proper materials make the design easier? Was it ethical to jump to another team, or not share materials? Exploring Engineering 10