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Case-study: PCS handheld unit

Case-study: PCS handheld unit. Prototyping for design exploration. Four Uses of Prototypes. Learning Answering questions about performance or feasibility e.g., proof-of-concept model Communication Demonstration of product for feedback e.g., 3D physical models of style or function

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Case-study: PCS handheld unit

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  1. Case-study: PCS handheld unit Prototyping for design exploration

  2. Four Uses of Prototypes • Learning • Answering questions about performance or feasibility • e.g., proof-of-concept model • Communication • Demonstration of product for feedback • e.g., 3D physical models of style or function • Integration • Combination of sub-systems into system model • e.g., alpha or beta test models • Milestones • Goal for development team’s schedule • e.g., first testable hardware Adapted from: Prototyping, Lecture Notes of 15.783J Product Design and Development, ocw.mit.edu

  3. Physical Prototypes Tangible approximation of the product May exhibit un-modelled behaviour Some behaviour may be an artefact of the approximation Often best for communication Analytical Prototypes Mathematical model of the product Can only exhibit behaviour arising from explicitly modelled phenomena (however, behaviour is not always anticipated) Some behaviour may be an artefact of the analytical method Often allow more experimental freedom than physical models Physical and Analytical Prototypes Adapted from: Prototyping, Lecture Notes of 15.783J Product Design and Development, ocw.mit.edu

  4. Focused prototypes Implement one or a few attributes of the product Answer specific questions about the product design Generally several are required Comprehensive prototypes Implement many or all attributes of the product Offer opportunities for rigorous testing Often best for milestones and integration Focused and Comprehensive Prototypes Adapted from: Prototyping, Lecture Notes of 15.783J Product Design and Development, ocw.mit.edu

  5. Types of Prototypes Adapted from: Prototyping, Lecture Notes of 15.783J Product Design and Development, ocw.mit.edu

  6. Comprehensive Prototypes Adapted from: Prototyping, Lecture Notes of 15.783J Product Design and Development, ocw.mit.edu

  7. Sketches for Product Package Exploration

  8. Presentation Sketch for Client Communication

  9. Sectional Sketches for Package Exploration

  10. Learning Milestone Learning Learning Communication Learning Learning Communication Learning Integration

  11. Manual Prototyping Techniques • Manual Prototyping techniques are good complement to CAD and RP • Plaster Forming • Quick and inexpensive way to get large vacuum form mould • Vacuum Forming • Quick and inexpensive way to get large freeform prototypes • Prototypes of impossible-to-shell CAD model • Sheet Fabrication • Quick and inexpensive way to get simple boxes • Modify RP pieces or combine half-designed RP components to final design • Acrylic Shaping and buffing • Transparent parts • Putty Surfacing • Last minute refinement to RP parts • Spray painting and decorating • No equivalent digital alternative yet

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