Capstone Senior Design Experience

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Capstone Senior Design Experience

• Renee Rogge, Ph.D.
• April 2, 2004

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Introduction

• Capstone Design Experience
• Traditional part of most engineering programs
• Final preparation for students entering industry
• Satisfies need for technical and soft skills

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Capstone Design Experience

• Potential models
• student selected projects
• faculty assigned projects
• individual projects
• team projects
• Current trends?
• Team projects with industrial involvement

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Proposed Capstone Experience

• Team projects
• Clients for projects
• industry
• rehabilitation centers (assistive technology)
• hospitals
• alumni, faculty, students
• Management
• Course director

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Design Sequence

• Junior year
• Spring Quarter, 2 credits (Design I)
• Senior Year
• Fall Quarter, 4 credits (Design II)
• Winter Quarter, 4 credits (Design III)
• Spring Quarter, 2 credits (Design IV)

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Learning Objectives for the Design Sequence

• Students will
• select a project and form teams of 3-4 based on
  project selection.
• clearly define the design problem.
• develop design options satisfying client
  specifications.
• formulate a test plan for the chosen design.

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• implement their design plans (build).
• test the resulting system.
• produce a written final report describing their
  project.
• give a final oral presentation and project
  demonstration.

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Design I

• Lecture Series
• Teaming
• Product development process
• Feasibility Merit Criteria
• How to achieve course deliverables
• Documentation
• Preview of potential projects

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Design I (contd)

• Controlled Design Experience
• Preliminary Design Review (PDR)
• Critical Design Review (CDR)
• Documentation
• Competition?!?

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Design I (contd)

• By the end of Design I, students will
• form Senior Design Teams,
• select projects (and gain approval),
• identify technical advisors,
• submit preliminary paperwork, and
• attend several Critical Design Reviews of
  students finishing the Capstone experience
  (Design IV).

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Design II

• Team meetings with management
• Culminates in a Preliminary Design Review
• team submits report presents design decisions
• team requests permission from technical advisors
  and client to order parts and move to the build
  and test portion of the experience.

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Design II

• Lecture series, as needed
• technical presentations
• budgeting
• ethics, i.e. IRB, IACUC, etc.
• patents, intellectual property
• Gantt charts
• literature reviews
• ...

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Design III

• Continued lecture series, as needed
• Biweekly meetings with management
• Student activities
• implement approved design
• test design
• document modifications and test results

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Design III (contd)

• At the end of Design III, the teams will
• provide evidence to management that the build
  phase has been completed.
• document design modifications.
• initiate test plans.

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Design IV

• Students will
• complete the testing phase of the project.
• submit a final report.
• conduct a Critical Design Review complete with
  demonstration.
• Public presentation of the projects
• mini symposium?
• poster display?

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Organizational Issues

• Faculty
• One faculty member serving as management for
  Design I --gt Design IV
• Develop/revise management documentation for
  future offerings
• Various members serving as technical advisors,
  i.e. subject matter experts
• Clients, as desired
• Attendance at PDRs and CDRs

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Organizational Issues (contd)

• Projects
• Carefully defined
• Interdisciplinary
• Good support from industry will be helpful

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Benefits

• Students
• applications, seeing it all come together
• exposure to industry environment
• teaming
• job interviews

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Benefits

• Faculty
• exposure to new problems and ideas
• maintain or create contacts with industry
• opportunities for collaboration
• ABET and assessment

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Role in ABET EC2000

• More than half of the Criterion 3 (a-k) outcomes
  involve abilities directly related to design
• Criterion 4 requires design experience
• Senior Design provides one vehicle for assessment
  of program outcomes
• surveys (faculty, tech advisors, students)
• grading rubrics

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Summary

• Capstone experience is a great opportunity for
  faculty and students
• Large cost (time, )
• Greater reward
• Closed loop assessment required every year to
  help the experience mature

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Questions?
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Current Research Activities
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A Digital Human Model for Space Suit Design
and Analysis

• Summer 2002 2003
• Johnson Space Center
• Anthropometry Biomechanics Facility (ABF)

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Introduction

• Current suit design and evaluation
• Based on traditional anthropometric measurements
• Neglects potentially important surface and volume
  data (useful in design)
• Lacks range of motion data for suited astronauts
• Human modeling

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Research Objective

• Develop a new methodology for representing humans
  in a computer environment to help address the
  issues of suit accommodation, new suit design
  criteria, and suit performance.

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Shape Tape

• Motion analysis system
• Wireless
• Tracks and records whole body motion
• Evaluating accuracy
• Can be used as input to ABFs ERGO model

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3D Whole Body Scanning

• Traditional measurements
• Provides surface data, with surface
  reconstruction mechanisms
• Exports in many file formats
• Segmentation capable

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Scanner Data
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Research Strategy

• Incorporate 3D surface information into the ERGO
  model, including clothing options
• Implement kinematic capabilities
• Couple kinematic capabilities with ROM data from
  Shapetape.
• Must maintain the integrity of the data

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Summer 2003

• Segmentation
• Reconnect segments
• Add kinematic capabilities to the arms without
  sacrificing accuracy

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Segmentation

• Used automated landmarks
• 5 Tecmath cuts
• 15 Matlab segments
• Modular approach

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Repositioning

• Whole body model based on one static scan
• Need the ability to pose the body in any feasible
  position
• Computationally expensive to calculate end
  position for each data point
• Use thin-plate spline theory

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Thin-Plate Spline Theory

• Frequently used to analyze biological organisms
• Method for interpolating surfaces over
  irregularly spaced data
• Expresses the dependence of the physical bending
  energy of a thin metal plate on point constraints

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Thin-Plate Spline Theory

• Specifies the mapping of points for a reference
  image to corresponding points on a target image
• Based on minimum physical bending energy
• Use ERGO model calculations at target points

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Preliminary Results
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Scanned Posture
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• Right shoulder extended
• Left shoulder flexed

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• Left right elbow flexed

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• Right shoulder abducted
• Left shoulder flexed

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Validation

• Scanned subject in various poses
• Compare data points
• 10 error for right arm
• Predict 20-25 error for whole body

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Limitations

• Error increases at more extreme postures
• No soft tissue characteristics
• Joints are not modeled

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Future Plans

• Expand TPS theory
• Validate all segments
• Add clothing options to the model
• Couple with dynamic range of motion data

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Other Research Activities
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Keck Engineering Analysis Center
Funded by the W.M. Keck Foundation --
340,000 January 2003-January 2006 FIE Paper on
Assessment of Center October 2004
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Stability and Balance in the Elderly
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Plantar Pressure Sensor
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Impact Indicator Vest
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Thank You!
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Questions?
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ABET EC2000

• Engineering programs must demonstrate that their
  graduates have
• (a) an ability to apply knowledge of mathematics,
  science, and engineering
• (b) an ability to design and conduct experiments,
  as well as to analyze and interpret data
• (c) an ability to design a system, component, or
  process to meet desired needs
• (d) an ability to function on multi-disciplinary
  teams
• (e) an ability to identify, formulate, and solve
  engineering problems
• (f) an understanding of professional and ethical
  responsibility
• (g) an ability to communicate effectively
• (h) the broad education necessary to understand
  the impact of engineering solutions in a global
  and societal context
• (i) a recognition of the need for, and an ability
  to engage in, life-long learning
• (j) a knowledge of contemporary issues
• (k) an ability to use the techniques, skills, and
  modern engineering tools necessary for
  engineering practice