Chapter 3: Detail Design

Chapter 3 Goal

Now that the team has explored possible solutions and documented that process in Chapter 2, this next chapter in the design report identifies a detailed solution in order to move forward with the prototyping and validation stages of the project.

This phase (along with the Critical Design Review) is a detail design wherein the team develops the details necessary to build and implement the designs for the process, equipment, or product.  This approach identifies all the component details of the solution, their physical attributes, and the necessary interfaces through which all the components interact.  Once approved, the team makes necessary modifications to this high-level design and begins the detailed design process.

Remember: every project is unique and some of the sections below may not be applicable (and can therefore be omitted).  Teams should use the items below as a guide and not an outline or checklist (i.e., use an order that makes sense for your project and report).

Development of Detail Design

  1. Update your system design based on feedback from the Preliminary Design Review.
  2. Provide justification for major changes.

Detail Design Documentation

  1. Create detail designs and associated documents including dimensioned, orthographic drawings for all fabricated parts, detailed specification documents for all procured parts, electrical schematics, final process flow charts, software code, etc.
  2. Update and finalize the detailed List of Material.
  3. Create assembly drawings with ballooned list of material (or equivalent).

Specifications Update

  1. Update your Requirements table, if required, based on the knowledge gained during your detail design process.
  2. Justify changes based upon your design findings.
  3. Finalize the dimensions or metrics for each requirement.
  4. Make note of all significant changes on change sheet in front of report.

Assembly/Manufacturing Procedures

  1. Estimate itemized and total prototype cost.
  2. Define manufacturing processes or implementation methods to achieve your final design.

Prototype Plan

  1. Identify methods for procuring parts and fabrications services, define prototype build process, and define initial tests and expected results.
  2. Describe facilities and people resources required to build prototype, and define total cost of prototype build including purchased and fabricated parts.
  3. Define where and when you plan to demonstrate your prototype.
  4. Develop initial validation plan outline.

Prototype Risk Assessment

  1. Identify potential risks that would delay the development of the prototype (procuring parts/materials, fabrication, etc.). 3 minimum.
  2. Develop contingency plans related to the potential risks.

This chapter should be carefully connected to Chapter 1 and Chapter 2. Provide strong transitions between report chapters—remember each chapter has a purpose, but is still part of a larger project report.

The following sections should be updated.  Remember to omit the previous chapter’s version as part of revision:

  1. Update the Table of Contents, List of Figures and Tables, and Revision Table Summary as needed.
  2. Include budget breakdown. Each team starts with approximately $3,500 to use for fabrication, tooling, measuring equipment, etc. If more funds are needed, justification with the instructor is required.
  3. [End of document] Address areas of concern, acknowledge Gantt Chart (what milestones were achieved), risks, and future considerations.
  4. References  (APA or IEEE citation style required)
  5. Appendices. These should include the most up-to-date versions of:
    • Original Project Statement [PowerPoint Presentation from beginning of Autumn Semester]
    • Team Charter [Signed]
    • Detailed Interview Results
    • Detailed Research Results
    • Problem Identification Presentation PowerPoint (6 slides per page, omit notes)
    • Preliminary Design Review Presentation PowerPoint (6 slides per page, omit notes)
    • Critical Design Review Presentation PowerPoint (6 slides per page, omit notes)
    • Project Schedule Update Gantt Chart (or other scheduling tracking application) including more detail for each high-level activity.
    • Concept Sketches Provide any additional concept sketches not included in the design document.
    • Weekly Status Review Meeting Agendas, Notes, and Reports

Connection:  Critical Design Review

The Critical Design Review (CDR) is another technical assessment from the industry sponsor but more defined.  You will need to present to the sponsor over the Detail Design Section from the Design Document.  The sponsor (and course instructors) will be assessing the team’s performance and will provide feedback on the final design that will go into the prototype phase. Typically, this presentation takes 20-45 minutes pending on the audience (make sure to ask who will be attending so the presentation is appropriately tailored).  Feedback from the sponsor should be included in the Detail Design Section of the Design Document.  A rubric is posted on Carmen for grading.

IMPORTANT NOTE

All teams are required to discuss the social, environmental, and global issues associated with the potential solution.

License

MDC Design Guide Copyright © by Bob Rhoads, Capstone Program Director; John Schrock, P.E., Senior Lecturer; Lynn Hall, Ph.D., Senior Lecturer & Director, Engineering Technical Communications; and Jake Brandon, Graduate Teaching Associate. All Rights Reserved.