MEEN 4263/64 Senior Design

Fall 2014 – Spring 2015

Design Concepts

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What will we be doing?1 Lecture each week, 1 hrLab session, up to 3 hours or speakers Dean says 3-5 team members, I have allowed a

few with 6, no more than 6 students per team. Status Reports of Projects Conceptual Design Review – middle of October Preliminary Design Review – end of Fall

Semester (last regular class day or “Finals” day) Mid-Semester Design Review–after Spring Break. Senior Design Conference/ Critical Design

Review – May 1, 2015

What is Engineering Design?

The use of math, science, and engineering knowledge, skills, techniques to create or modify an item such that the new or modified item meets or exceeds desired criteria in the most efficient manner. Poor design is “just getting by, or doing the minimum.”

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What positions do you need?

Outside Mentor/AdvisorProject LeaderChief Financial Officer (also may be chief weight/ load/ space officer)Manufacturing LeadDocumentation LeadAnalyst LeadCommunications / Report Lead

Prof. Peel will be your Program Manager

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The Design ProcessGet Project Notebook (Required!)Develop ObjectivesBrainstorm ideas based on objectives, trying not to be critical.Conduct a literature search, continually refine.Select best ideas and make a decision matrix.Presentations from Industry… ask questions!!!

Discussion on next pages……

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Brainstorming

Don’t be critical of ideas, lots of great products were “pooh-poohed” at first.Use your objectives as your guides.Get in a room with a chalk/white board, appoint a scribe, take an hour or two.If a good idea comes, perhaps you change your objective?Ask or try to explain your project to a non-technical person (mother, brother, wife, friend?)

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Literature SearchGoogle, Google ImageBing, Bing ImageJernigan Library – Online Resources, Interlibrary Loan, Books, JournalsSCIRUS.COM (technical search)Patent Searches (uspto.gov, see notes from Dr. Murphy)

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Decision Matrices – Project (Cribbing Group)

Project Selection Decision Matrix

Point Value Scale: Best & Easiest = 3 , Worst & Hardest = 1

ProjectDesig

nManufacturin

gAnalysi

sConsultin

gCreativi

tyScore

s

Impeller for Pump 3 2 3 1 1 10.00

Spinning Wash Nozzle 1 1 1 2 2 7.00

Cribbing Mechanism 2 3 2 3 3 13.00

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The Design Process Cont’dAfter you have some basic ideas…….Conduct preliminary calculationsSelect materialsSelect configurationMake Technical DrawingsConduct analyses and optimizationRevise Technical DrawingsFabricate & Test prototypeRepeat the processPresentations from Industry… ask questions!!!

What is a Good Design?It works! (Will your design work? How do you know?)You have considered several alternative designs and determined this is the best one. (How did you consider the other designs or ideas? Calculations, Decision matrices, spreadsheets, other research?)The design has a cost suitable for its application. (Determined through price quotes, similar projects, inclusion of all expenses, especially labor)The design can be reasonably manufactured. (Has something similar been fabricated before? Equipment? Expertise? Labor time?)It can be completed in a realistic time. (Does your schedule allow enough time to complete your design? Buffer time?)

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Detailed (Implemented) Design

You should have good technical drawings now..Preliminary & Detailed analyses? When simulated, does the design work? Can you fabricate it as designed? Is the cost reasonable?

Detailed drawings, exploded views, other? List of needed materials,Machine shop work?

What is a Technical Drawing?

It is a professional-level drawing that has enough info for a qualified machinist/ fabricator/technician to fabricate what you have designed.

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From:www.cadster.co.uk/index.html

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Resources from the Book!Definition of DesignEngineering EthicsProject ManagementModeling & SimulationMaterial SelectionStress AnalysisEngineering Economics, cost analysisDesign OptimizationStatistics, Statistical decisionsReliabilitySafety

Ch 1: Engineering Design Ch 2: Product Development Process Ch 3: Problem Definition and Need

Identification Ch 4: Team Behavior and Tools Ch 5: Gathering Information Ch 6: Concept Generation Ch 7: Decision Making and Concept

Selection Ch 8: Embodiment Design Ch 9: Detail Design Ch 10: Design for Sustainability and the

Environment Ch 11: Materials Selection Ch 12: Design with Materials Ch 13: Design for Manufacturing Ch 14: Risk, Reliability, and Safety Ch 15: Quality, Robust Design, and

Optimization Ch 16: Economic Decision Making Ch 17: Cost Evaluation Ch 18: Legal and Ethical Issues in

Engineering Design (available online)

Weekly Status Report/Assignments

Fill in names, team roles, email, cell #Make sure you have a valid Team Mentor/ Consultant (technical background)Describe current work, list problems, concernsList next week’s objectives, list of materials needed, etc.Team leaders should fill out status report each week, write the tasks each person will do, follow up on each task.Each team member should know what their tasks are each week, and be prepared to report on them, at weekly meetings.Let me know of needed materials, 3D printing, etc well before needed dates.

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Time Management Assignment

A. List 5 things you can do to improve your time management.

B.Write about what you have done to implement each of them.

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