1. UNIVERSITY OF PUERTO RICO AT HUMACO DEPARTMENT OF PHYSICS ENGINEERING GRAPHICS I Engineering Design Process Dr. Walter López Moreno

2. Outline: What is the engineering design process? How is the design process used? What are engineering activities? Where can I find resources?

3. Fix Broken Cars Design Medical Equipment Build new wind turbines Design sport shoes Create a sculpture What do Engineers Do? Stamp all the ones you think apply

4. Fix Broken Cars Design Medical Equipment Build new wind turbines Design sport shoes Create a sculpture technician artisan What do Engineers Do?

5. What are some things engineers design? Medical Equipment Bio-fuels Transportation

6. What are some things engineers design? Wind Power Tunnels Structures

7. Engineering Design Process common to all designed items Define Problem or Need Select & Test Propose Design Solutions Research Investigate Gather Info Analyze Evaluate Solutions What order is typically followed? Order the steps below from 1 to 5…

8. Analyze Evaluate Solutions Engineering Design Process Define Problem or Need Select & Test Propose Design Solutions Research Investigate Gather Info What similar things exist? BrainstormingDoes solution meet need? Proof of concept Does it work? Modify & redesign

9. Engineering Design Process often common, every day issues Define Problem or Need Issue: Hand dryers in public restrooms do not dry hands effectively. Need solution that dries hands in an amount of time & dryness acceptable to 80% of people. New design must cost no more than 1.5 times of current dryers. http://nsdl.org

10. Engineering Design Process often common, every day issues Define Problem or Need Now it’s your turn! Think about some common or not so common problems or needs you have observed Let’s take 2 minutes and generate some ideas on the chat and on the microphones

11. Engineering Design Process What are some problems or needs that you think engineers should address? Define Problem or Need 123 456 789

12. Analyze Evaluate Solutions Engineering Design Process Define Problem or Need Select & Test Propose Design Solutions What similar things exist? BrainstormingDoes solution meet need? Proof of concept Does it work? Modify & redesign Research Investigate Gather Info

13. Engineering Design Process Consider the hand dryer example. Engineers might: Conduct survey/study to determine the drying time and level of dryness acceptable to 80% of people Explore alternative methods (to forced hot air) to dry hands Research Investigate Gather Info

14. Engineering Design Process Research Investigate Gather Info Let's find out what this audience finds acceptable for hand drying time. Stamp your answer: 2 sec 4 sec 6 sec 8 sec 10 sec 12 sec 14 sec 16 sec 0 sec

15. Engineering Design Process Research Investigate Gather Info Based on your ideas - here is the research & investigation that we would recommend:

16. Engineering Design Process Per qualitative or quantitative rating system, a final design is selected. The final design is then thoroughly tested. There is always more than one possible way to solve a problem …. lots of brainstorming involved. This is where really creative ideas come from. Select & Test Propose Design Solutions Engineers evaluate multiple design solutions to determine if and how well they meet the design criteria. Analyze Evaluate Solutions

18. http://engineeringpathway.org References: http://teachengineering.org