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Lecture 4: Phases of Engineering Design

Lecture 4: Phases of Engineering Design. MECE 202 PRINCIPLES OF MECHATRONICS DESIGN Lecture Notes Asst . Prof. Dr. Zühal ERDEN Department of Mechatronics Engineering. Need Identification (Client statement ?). Problem Definition. Conceptual Design. Preliminary Design.

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Lecture 4: Phases of Engineering Design

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  1. Lecture 4: Phases of Engineering Design MECE 202PRINCIPLES OF MECHATRONICS DESIGNLectureNotes Asst. Prof. Dr. Zühal ERDEN Department of MechatronicsEngineering

  2. NeedIdentification (Client statement ?) Problem Definition Conceptual Design Preliminary Design Detailed Design Final Design (FabricationSpecifications & Documentation) Design Communication Main Phases of the Engineering Design Process

  3. NeedIdentification (Client statement ?) NeedIdentification (Client statement ?) Problem Definition Conceptual Design Preliminary Design Detailed Design Final Design (FabricationSpecifications & Documentation) Design Communication Main Phases of the Engineering Design Process

  4. Problem Definition NeedIdentification (Client statement ?) Problem Definition Conceptual Design Preliminary Design Detailed Design Final Design (FabricationSpecifications & Documentation) Design Communication Main Phases of the Engineering Design Process

  5. Problem Definition Methods: Objectivestree Function-meanstree Requirementsmatrix Input: Client’sstatement Sources of Information: Literature on thestate-of-the art Experts Standardsandcodes Regulations Tasks: Clarifydesignobjectives (1) Establishuserrequirements (2) Identifyconstraints (3) Establishfunctions (4) Means: Literaturereview Brainstorming User surveysandquestionnaries Interviews Output: Revised problem statement Refinedobjectives Constraints User requirements Functions

  6. NeedIdentification (Client statement ?) Problem Definition Conceptual Design Conceptual Design Preliminary Design Detailed Design Final Design (FabricationSpecifications & Documentation) Design Communication Main Phases of the Engineering Design Process

  7. Conceptual Design Sources of Information: Competitiveproducts Input: Revised problem statement Refinedobjectives Constraints User requirements Functions Methods: Qualityfunctiondeployment (QFD) Morphologicalchart Tasks: Establishdesignspecifications (5) Generatedesignalternatives (6) Output: Conceptualdesign(s) Design specifications Means: Brainstorming, synecticsandanalogies, benchmarking andreverseengineering

  8. NeedIdentification (Client statement ?) Problem Definition Conceptual Design Preliminary Design Preliminary Design Detailed Design Final Design (FabricationSpecifications & Documentation) Design Communication Main Phases of the Engineering Design Process

  9. Means: Laboratoryexperiments, prototypedevelopment, simulationandcomputeranalysis Preliminary Design Input: Conceptualdesign(s) Design specifications Sources of Information: Rules of thumb Simple models Knownphysicalrelationships Tasks: Model andanalyzeconceptualdesign (7) Test andevaluateconceptualdesign (8) Methods: Refinedobjectivestree Comparisoncharts Output: A selecteddesign Test andevaluationresults

  10. NeedIdentification (Client statement ?) Problem Definition Conceptual Design Preliminary Design Detailed Design Detailed Design Final Design (FabricationSpecifications & Documentation) Design Communication Main Phases of the Engineering Design Process

  11. Detailed Design Means: Formalreview Publichearing Input: A selecteddesign Test andevaluationresults Methods: CADD-ComputerAided Design andDrafting Tasks: Refineand optimize thechosendesign (9) Sources of Information: Design codes Handbooks Locallawsandregulations Suppliers’ componentspecifications Output: Proposedmanufacturingspecifications Final designreviewforclient

  12. NeedIdentification (Client statement ?) Problem Definition Conceptual Design Preliminary Design Detailed Design Final Design (FabricationSpecifications & Documentation) Design Communication Design Communication Main Phases of the Engineering Design Process

  13. Design Communication Input: Manufacturingspecifications Sources of Information: Feedback fromclientsandusers Tasks: Documentthecompleteddesign (10) Output: Final reporttoclientcontainingmanufacturingspecifications

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