Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 161Lecture #14 EGR 120 – Introduction to EngineeringReading Assignment: Chapter 3 – Design and Teamwork in Thinking Like An Engineer – An Active Learning Approach, by StephanHandout: ASEE Model Design Competition Rules (for the current year)Assignment: Team Assignment #1Engineering Design:“Engineering design is a systematic process by which solutions to the needs of humankind are obtained.” (Introduction to Engineering, by Eide, McGraw-Hill)ABET defines engineering design as follows:“Engineering design is the process of devising a system, component, or process to meet desired needs. It is a decision-making process (often iterative), in which the basic sciences, mathematics, and engineering sciences are applied to convert resources optimally to meet a stated objective. Among the fundamental elements of the design process are the establishment of objectives and criteria, synthesis, analysis, construction, testing, and evaluation. The engineering design component of a curriculum must include most of the following features: development of student creativity, use of open-ended problems, development and use of modern design theory and methodology, formulation of design problem statements and specifications, production processes, concurrent engineering design, and detailed system descriptions. Further, it is essential to include a variety of realistic constraints such as economic factors, safety, reliability, aesthetics, ethics, and social impact.”2The Engineering Design Process:Engineering is inherently about solving problems. This could be as simple as solving a homework problem or as complex as designing and building an airplane. As engineering solutions become more complex, a systematic approach becomes highly beneficial. This systematic approach to finding solutions is called the engineering design process. There are different ways to organize the steps in this process. The exact number of steps in the process may vary. Our text introduces an 8-step process as shown on the following page.Lecture #14 EGR 120 – Introduction to Engineering3The Engineering Design Process:1. Recognizing the Need for a Product or Service2. Problem Definition andUnderstanding3. Research and Preparation4. Conceptualization5. Synthesis6. Evaluation7. Optimization8. PresentationLecture #14 EGR 120 – Introduction to Engineering4The Engineering Design Process:1. Recognizing the Need for a Product or Service2. Problem Definition andUnderstanding•A product that consumers will like•An item that will be marketable•Solution to a problem in society•Broad definition first•Avoid jumping to any particular solution•It is important to fully understand the task ahead of your team.•How much money is available?•What deadlines are involved?•What restrictions are involved?•What criteria must be met?•Solutions to problems are often handled by breaking the task into parts. Communication among group members is critical. •What parts of the project is my group responsible for?Lecture #14 EGR 120 – Introduction to Engineering5The Engineering Design Process:3. Research and Preparation•Collect useful information•Search for similar products or components•Avoid “re-inventing the wheel”•Internet searches are very useful•Search vendor catalogs for the most useful components•Generate ideas that could offer a reasonable solution•Brainstorming – do not discount any ideas yet•Perform enough analysis to determine if each solution has merit and is worth pursuing further•Develop a task chart for completion of the project4. ConceptualizationLecture #14 EGR 120 – Introduction to Engineering6The Engineering Design Process:5. Synthesis•Details of possible design solutions are considered here•Perform calculations•Use computer simulation•Determine sizes and materials for components•Analyze the problem in more detail•Identify critical design issues (problems to be overcome)•Build and test prototype models•Determine the best solution from the alternatives (see evaluation tool in text)6. EvaluationLecture #14 EGR 120 – Introduction to Engineering7The Engineering Design Process:7. Optimization•Optimization = minimization or maximization•A functional design meets all of the design requirements.•An optimized design improves on the functional design in areas such as cost, strength, speed, weight, etc.•Optimization is often an iterative procedure. See the procedure shown on the next page.•Communicate your solution to the client•This might include:•Oral reports•Written reports•Performance data•CAD drawings & schematics•Parts lists•Instruction & training manuals•Etc.8. PresentationLecture #14 EGR 120 – Introduction to Engineering8This process is considered to be iterative. This means that certain portions of the process may need to be repeated. For example, if a weakness in the design is detected, a search for more information might be conducted.• Note that the design process may be used for an entire project as well as for subsystems of the project. Lecture #14 EGR 120 – Introduction to EngineeringInitial DesignPerformAnalysisEvaluate Results of AnalysisCanthe design be improved?Modify DesignFinal DesignYesNoAn Optimization ProcedureEngineering Design Process Step 8 - Optimization9ASEE Model Design Competition •Form design teams (3-5 students per team)•Review the rules for the ASEE Model Design Competition. •As a class, discuss the rules briefly.•As a team, come up with a list of specifications related to the vehicle, the track, and the vehicle’s performance on the track as described on the following pages. Select someone in the group to record the results (or divide up the lists among group members). Lecture #14 EGR 120 – Introduction to Engineering10Step 2 –Problem Definition and Understanding Vehicle Specifications – List specifications for the vehicle.••• • •• • • • •Lecture #14 EGR 120 – Introduction to Engineering11Step 2 –Problem Definition and UnderstandingTrack Specifications – List specifications for the track.•••••• • • •• • • •Lecture #14 EGR 120 – Introduction to Engineering12Step 2 –Problem Definition and UnderstandingPerformance Specifications –