Concept SelectionChapter 8
Concept Selection Chapter 8
Concept Development ProcessMissionDevelopmentEstablishSelectIdentifyGenerateTestSetPlanStatementPlanFinalCustomerTargetProductProductProductDownstreamNeedsConceptsConcept(s)Concept(s)DevelopmentSpecificationsSpecificationsPerformEconomicAnalysisBenchmark CompetitiveProductsBuild and Test Modelsand Prototypes
Concept Development Process Perform Economic Analysis Benchmark Competitive Products Build and Test Models and Prototypes Identify Customer Needs Establish Target Specifications Generate Product Concepts Select Product Concept(s) Set Final Specifications Plan Downstream Development Mission Statement Test Product Concept(s) Development Plan
Concept Selection ExampleReusable Syringe
Concept Selection Example: Reusable Syringe
Concept Development Funnel000conceptgenerationconceptscreeningconceptscoringconcepttesting
Concept Development Funnel concept generation concept screening concept scoring concept testing
Concept Selection ProcessPrepare the Matrix-Criteria-ReferenceConcept- WeightingsRate Concepts Scale (+-0) or (1-5)-ComparetoReference Concept orValuesRank Concepts-SumWeightedScoresCombine and Improve-RemoveBadFeatures- Combine Good QualitiesSelect Best Concept-MayBeMorethanOne-BewareofAverageConceptsReflect on the ProcessContinuousImprovement
Concept Selection Process • Prepare the Matrix – Criteria – Reference Concept – Weightings • Rate Concepts – Scale (+ – 0) or (1–5) – Compare to Reference Concept or Values • Rank Concepts – Sum Weighted Scores • Combine and Improve – Remove Bad Features – Combine Good Qualities • Select Best Concept – May Be More than One – Beware of Average Concepts • Reflect on the Process – Continuous Improvement
Example: Concept ScreeningCONCEPTVARIANTSSELECTIONABcFGDEREF.CRITERIA00000Easeof Handling---00000+Ease of Use一-00000NumberReadability+++00Dose Metering++++++0000000Load Handling+0000ManufacturingEase+一一一00++二一--Portability3221222PLUSES3551234SAMES2432010MINUSES0023-20NET-11375264RANKNoNoNoYesCONTINUE?YesYesYes
Example: Concept Screening
Example: Concept ScoringConceptsAEDFG+(reference)LeverStopMaster CylinderSwash RingDial Screw+WeightedWeightedWeightedWeightedWeightRatingRatingRatingRatingSelection CriteriaScoreScoreScoreScore35%3440.20.150.150.2Easeof Handling344315%0.450.60.60.45Easeof Use23550.20.30.50.5Readabilityof Settings10%332325%0.750.750.50.75Dose Metering Accuracy425315%0.30.750.60.45Durability332220%0.60.60.40.4Ease of Manufacture33330.30.30.30.3Portability10%2.753.103.05Total Score3.45Rank4123NoNoNoContinue?Develop
Example: Concept Scoring
NovoLogMix70/30FlexPenPrefilledSyringe70%2nespartiroNAoOAaanhuinFromProductDesignandDevelopmentbyKarlUlrichandStevenEppinger(McGraw-Hill/lrwin)
Remember..The goal of concept selection is not toSelect the best concept.The goal of concept selection is toDevelop the best concept.So remember to combine and refine theconcepts to develop better ones
Remember. The goal of concept selection is not to • Select the best concept. The goal of concept selection is to • Develop the best concept. So remember to combine and refine the concepts to develop better ones