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Design and Modeling. Ten-Stage Design Process. What Is Engineering Design?. “Engineering Design is the process of designing a system, component, or process to meet a desired need.” (Gomez et al 349). Engineering Design cont. Continuous process Can be short and simple, or - PowerPoint PPT Presentation
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Design and ModelingDesign and Modeling
Ten-Stage Design ProcessTen-Stage Design Process
What Is Engineering Design?What Is Engineering Design?
““Engineering Design Engineering Design is the process of is the process of designing a system, designing a system, component, or component, or process to meet a process to meet a desired need.” desired need.” (Gomez et al 349)(Gomez et al 349)
Engineering Design cont.Engineering Design cont.
Continuous processContinuous process
Can be short and simple, or Can be short and simple, or
complex and in-depth processescomplex and in-depth processes
Used for:Used for: Ongoing manufacturing processesOngoing manufacturing processes One-time designsOne-time designs
Significant FactorsSignificant Factors
FunctionalityFunctionality
QualityQuality
SafetySafety
ErgonomicsErgonomics
AppearanceAppearance
Environmental Environmental ConsiderationsConsiderations
EconomicsEconomics
QuickTime™ and aYUV420 codec decompressor
are needed to see this picture.
http://www.enm.bris.ac.uk/research/nonlinear/tacoma/tacoma.html
Tacoma Narrows Bridge Disaster
Ten-Stage Design ProcessTen-Stage Design Process
Begins with appointment of project managerBegins with appointment of project manager Responsible for oversight of projectResponsible for oversight of project
Recruitment of team members of various Recruitment of team members of various backgrounds and expertisebackgrounds and expertise
Stage 1: Identify the Problem/ Stage 1: Identify the Problem/ Product InnovationProduct Innovation
Establish the ProblemEstablish the Problem
Identify information sources to understand Identify information sources to understand problem’s scope and natureproblem’s scope and nature
Develop a preliminary, formal problem Develop a preliminary, formal problem statementstatement
All correct issues and backgrounds have All correct issues and backgrounds have been exploredbeen explored
Stage 2: Define the Working Stage 2: Define the Working Criteria and GoalsCriteria and Goals
Establish preliminary Establish preliminary goalsgoals Act as focal points Act as focal points
throughout processthroughout process
Determine working Determine working criteriacriteria
Develop process Develop process goalsgoals Checkpoints for Checkpoints for
progressprogress
Example Working Example Working Criteria QuestionsCriteria Questions Costs?Costs? Production Difficulty?Production Difficulty? Size, Weight, Strength?Size, Weight, Strength? Appearance?Appearance? Ease of Use?Ease of Use? Safe to Use?Safe to Use? Legality Concerns?Legality Concerns? Reliable & Durable?Reliable & Durable?
Stage 3: Research & Gather DataStage 3: Research & Gather Data
All problem aspects explored with good, All problem aspects explored with good, reliable background informationreliable background information
What information is neededWhat information is needed
Best sources for informationBest sources for information
Organization is keyOrganization is key
Stage 3: What Info is Needed?Stage 3: What Info is Needed?
Published info on problem?Published info on problem? Availability of existing solution?Availability of existing solution? Who is providing info?Who is providing info?
Advantages and disadvantages to solution.Advantages and disadvantages to solution.
Costs?Costs? Significant issue?Significant issue? Ratio of time spent compared to overall costs.Ratio of time spent compared to overall costs.
Legal issues?Legal issues?
Environmental concerns considered?Environmental concerns considered?
Stage 3: Sources for InformationStage 3: Sources for Information
LibrariesLibrariesProfessional AssociationsProfessional AssociationsTrade Journals and Trade Journals and PublicationsPublicationsNewspapers and Newspapers and MagazinesMagazinesMarket Assessment Market Assessment SurveysSurveysGovernment PublicationsGovernment Publications
Patent Searches and Patent Searches and ListingsListings
((www.www.usptouspto..govgov))
Competition’s ProductsCompetition’s Products
Trade Journal
http://cronos.rutgers.edu/~weng/journals/jemt.html
Stage 4: Brainstorm and Stage 4: Brainstorm and Generate Creative IdeasGenerate Creative Ideas
Develop as many Develop as many creative solutions to creative solutions to the problem the problem addressed as addressed as possiblepossible
Consider all ideasConsider all ideas ““Dumb” ideas may Dumb” ideas may
lead to the final lead to the final solution!solution!
Example of Brainstorming
Stage 5: Analyze Potential SolutionsStage 5: Analyze Potential SolutionsPhase IPhase I
Generated ideas Generated ideas narrowed to few ideasnarrowed to few ideas Examine list and Examine list and
eliminate duplicateseliminate duplicatesSimilar ideas may Similar ideas may remain, but not remain, but not duplicateduplicate
Clarifying questions Clarifying questions offered by teamoffered by team Evaluation by voteEvaluation by vote
Stage 5: Analyze Potential SolutionsStage 5: Analyze Potential SolutionsPhase IIPhase II
Remaining ideas Remaining ideas analyzed thoroughly analyzed thoroughly and accuratelyand accurately
3 to 5 options should 3 to 5 options should remain after analysisremain after analysis
May have to start May have to start process overprocess over
Analyzing PossibilitiesAnalyzing Possibilities Common SenseCommon Sense Economic AnalysisEconomic Analysis EstimationEstimation Compatibility AnalysisCompatibility Analysis Computer Analysis Computer Analysis
TechniquesTechniques Conservative Conservative
AssumptionsAssumptions
Stage 6: Develop and Test ModelsStage 6: Develop and Test ModelsModelingModeling
Method of illustrating a solution to a Method of illustrating a solution to a practical problempractical problem
Types of ModelingTypes of Modeling DescriptiveDescriptive FunctionalFunctional MathematicalMathematical ComputerComputer
CAD Model
http://www.aerospaceboy.com/405/construction.htm
Stage 6: Develop and Test ModelsStage 6: Develop and Test ModelsTestingTesting
Allows for comparing Allows for comparing and evaluating and evaluating against established against established criteria and goalscriteria and goalsDone throughout a Done throughout a projectproject Early modelsEarly models PrototypesPrototypes QualityQuality
Computerized Stress Test
http://www.sgi.com/fun/gallery/
Stage 6: Develop and Test ModelsStage 6: Develop and Test ModelsTesting ExamplesTesting Examples
DurabilityDurability
Ease of AssemblyEase of Assembly
ReliabilityReliability
StrengthStrength
FunctionalityFunctionality
Environmental Environmental ConsiderationsConsiderations
Quality and Quality and consistencyconsistency
Nissan Primera Crash Test
http://www.crash-test.org/marques/resultat.php?mod=nispri_1997
Stage 7: Make the DecisionStage 7: Make the Decision
Team members establish a means to Team members establish a means to compare and evaluate results of testingcompare and evaluate results of testing
Working criteria will determine advantages Working criteria will determine advantages and disadvantages of possible solutionsand disadvantages of possible solutions
Develop a Decision Table to visualize Develop a Decision Table to visualize each solution’s meritseach solution’s merits
Stage 8: Communicate and SpecifyStage 8: Communicate and Specify
All information gathered reported to clientAll information gathered reported to client Detailed written reportsDetailed written reports Summaries of technical presentations/memosSummaries of technical presentations/memos Relevant e-mailsRelevant e-mails Diagrams, charts, graphsDiagrams, charts, graphs Drawings and sketchesDrawings and sketches Computer printoutsComputer printouts Relevant documented materialRelevant documented material
Last chance to make revisions/terminateLast chance to make revisions/terminate
Stage 9: Implement and Stage 9: Implement and CommercializeCommercialize
Project Manager and Team MembersProject Manager and Team Members
Management and Key PersonnelManagement and Key Personnel
Technical RepresentativesTechnical Representatives
Business RepresentativesBusiness Representatives
Attorneys and Legal Support StaffAttorneys and Legal Support Staff
Stage 10: Post-Implementation Stage 10: Post-Implementation Review and Assessment Review and Assessment
Project is probably in full Project is probably in full productionproduction
Team is terminated Team is terminated because task is completebecause task is complete
Product Performance Product Performance ReviewReview
Assessment Report Assessment Report detailing productdetailing product
Used as reference for Used as reference for future project managers future project managers and teamsand teams
Product Performance Product Performance ReviewReview
Data on production Data on production efficiencyefficiency
Quality Control ReportsQuality Control Reports Money IssuesMoney Issues
Assessment ReportAssessment Report Strengths & WeaknessesStrengths & Weaknesses Outline what has been Outline what has been
learnedlearned Suggest ways to improve Suggest ways to improve
process qualityprocess quality
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