BioMedical Engineering Design Seminar BME 295

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BioMedical EngineeringDesign Seminar BME 295
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BioMedical Engineering Design Seminar BME 295
(11/8/06)Agenda

• Senior Project Status
• Customer contacted.
• Customer requirements document generated
• Estimating homework assignment review
• Lecture Resources

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Assignments

• Preliminary Project Plan document due on
  12/6/06
• Preliminary Project Plan Presentation (dry run -
  15 minutes per group)
• Groups 1 thru 4 on 12/6/06
• Groups 5 thru 8 on 12/13/06

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Final Presentation of Project Plans

• Current Schedule info from Dottie.
• Formal Project Plan Presentations for customers,
  supervisors, and class
• Tuesday - 12/19/06
• 800 AM to 1100 AM
• Location TBD
• Is this in conflict with anybodys exam
  schedule??? Please let me know immediately after
  class.

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BioMedical Engineering Design Seminar BME 295
(11/8/06)Agenda

• Project Team Status
• Customer contacted.
• Customer requirements document generated
• Estimating homework assignment review
• Lecture Resources

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Project Team Status

• Is any team having trouble with customer
  contacts?
• Please, if you are having trouble, dont hesitate
  to ask for suggestions.
• How are teams getting on with generating the
  customer requirements documents?
• Get as much detail as you can early on because it
  gets very expensive (both in time and materials)
  to change downstream.

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BioMedical Engineering Design Seminar BME 295
(11/8/06)Agenda

• Senior Project Status
• Customer contacted.
• Customer requirements document generated
• Estimating homework assignment review
• Lecture Resources

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Homework (Estimating)

• Here is the raw data from the homework sheets on
  the estimating problems.

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A couple of sorts

• Capstone project costs
• Trip to LA

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Any Questions or Comments ?????
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BioMedical Engineering Design Seminar BME 295
(11/8/06)Agenda

• Senior Project Status
• Customer contacted.
• Customer requirements document generated
• Estimating homework assignment review
• Lecture Resources

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Resources some general comments

• Dont be afraid to ask for suggestions from
  supervisors, customers, faculty, vendors, fellow
  students, whoever.
• Use your networking skills to ferret out
  information. (Internet, vendor manuals, etc.)
• Try to formulate the requests in such a way that
  you can get directly to the problem in a
  straightforward manner. (Dont beat around the
  bush).

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Resources you may need

• Four areas
• Consultants available
• Tools (hardware and software)
• Materials and material issues
• Fabrication facilities

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Consultants

• Consultants you most likely will use are the
  faculty and staff here at the University.
• Dont hesitate to contact vendor customer reps
  for specific information on product performance
  or use.

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Specific contacts at UR(in addition to
departmental faculty)

• Paul Osborne (ECE shop) Mechanical assembly
  design, material and tool suppliers, mechanical
  tools,
• Jim Lindner (ECE shop) Electrical components,
  electrical tools (crimpers, soldering, etc.),
  circuit boards, assembly procedures, suppliers.
• Vic Derefinko (HPN 305) Electrical Design,
  components, vendors.
• Ed Tan (CSB) LabView applications, circuit
  design.
• Art Salo (Hopeman/Gavett) Art is a mechanical
  engineer and is part of the BME department.

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Contacts outside of UR

• Leo Cordaro Field Engineer for National
  Instrument and LabView applications
• Other names available talk to UR staff.

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Tools (hardware)

• An assortment of tools is available in the Senior
  Projects lab.
• Mechanical tools Hand tools like drills, pliers,
  screw drivers, soldering irons, solder removal
  tools, etc.
• Electrical tools Multimeters, power supplies,

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Tools (hardware)

• An assortment of tools is available in the Senior
  Projects lab.
• Mechanical tools Hand tools like drills, pliers,
  screw drivers, soldering irons, solder removal
  tools, etc.
• Electrical tools Multimeters, power supplies,
• ECE Shop in Hopeman has more sophisticated tools
  like drill presses, grinders, sand blaster,
  milling machine, lathe, etc.

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Tools (hardware)

• An assortment of tools is available in the Senior
  Projects lab.
• Mechanical tools Hand tools like drills, pliers,
  screw drivers, soldering irons, solder removal
  tools, etc.
• Electrical tools Multimeters, power supplies,
• ECE Shop in Hopeman has more sophisticated tools
  like drill presses, grinders, sand blaster,
  milling machine, lathe, etc.
• ECE Labs (Gavett and Hopeman) have a large
  assortment of electrical equipment
• Oscilloscopes, Multimeters, power supplies,
  function generators, PCs,
• .

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Tools (hardware)

• An assortment of tools is available in the Senior
  Projects lab.
• Mechanical tools Hand tools like drills, pliers,
  screw drivers, soldering irons, solder removal
  tools, etc.
• Electrical tools Multimeters, power supplies,
• ECE Shop in Hopeman has more sophisticated tools
  like drill presses, grinders, sand blaster,
  milling machine, lathe, etc.
• ECE Labs (Gavett and Hopeman) have a large
  assortment of electrical equipment
• Oscilloscopes, Multimeters, power supplies,
  function generators, PCs,
• ECE Labs have specific time constaints in which
  the labs are available to the students.

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Tools (software)

• University software systems include
• Mathlab (analysis tool)
• National Instruments LabView
• Electronic Workbench (electrical CAD tool)
• Cadence OrCAD (electrical CAD tool)
• Solidworks (mechanical CAD tool)
• ProEngineer (mechanical CAD tool)
• Quartus II (electrical logic design tool)
• Variety of other electrical SW tools (TI DSP,
  Xilinx, Microchip assembler, etc.)

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Materials

• For the most part, project teams buy hardware and
  materials for the project
• No supplier approval is required at this time.
• For custom parts, ECE shop is one source or they
  can recommend another place. Paul or Jim can
  help identify facility.
• Lead time is a concern in material purchases.

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Materials (cont)

• If you are going to use the ECE shop, try to
  avoid exotic material if you possibly can
• Stainless Steel (use aluminum)
• Phosphor bronze
• Beryllium copper
• Lead (or any heavy metal)

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Material Issues

• Further increasing of phosphorus content leads to
  formation of a very hard compound Cu3P resulting
  in a brittle bronze with only special uses.
• Phosphor bronze is used for springs and other
  applications where resistance to fatigue, wear
  and chemical corrosion is required. It is also
  used in acoustic instruments (for guitars,
  mandolins, etc...).
• Beryllium copper may have a carcinogenic effect
  if inhaled and gloves and masks are recommended
  while handling it. As a result, it is sometimes
  replaced by safer beryllium copper alloys such as
  Cu-Ni-Sn beryllium.
• Stainless is a hard material and takes a long
  time to machine.

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Fabrication

• Senior Design Labs These are facilities that
  are specifically allocated to the design and
  fabrication of the medical devices being designed
  by the Capstone Project Teams
• The ECE shop and shop support personnel is
  another facility that can be used for subassembly
  fabrication.
• ECE Shop/Personnel cost is 45 per hour. Paul
  and Jim will provide estimates on fab times.
• Printed Circuit Board Layout and Fab consulting
  is also available in the shop.

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Fabrication Issues

• Specific items that must be considered when using
  the support facilities
• Policy is First come first served
• ECE shop works on both BME and ECE projects
• Lead time on parts
• Shop work scheduling (Schedule work early)
• Shop gets busy as projects get cranked up
• Art Salo does some Mechanical work free
• Paul Osborne is available for consulting (free)

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Fabrication Issues (cont)

• To streamline the fab process, please consider
  the following
• Must have drawings. They should be of parts that
  can be made.

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This one is very difficult to make.
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You tell Paul or Jim in the shop that you want
this

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As the project progresses, they find out you
really want this.
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Fabrication Issues (cont)

• To streamline the fab process, please consider
  the following
• Must have drawings. They should be of parts that
  can be made.
• Drawings must have dimensions and tolerances
• Standard tolerances shop works to are
• Metal .001
• Plastic .01
• Wood .03
• Specify the tolerance that is really needed.
  Tighter tolerances than standard cost more.

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Fabrication Issues (cont)

• To streamline the fab process, please consider
  the following
• Must have drawings. They should be of parts that
  can be made.
• Drawings must have dimensions and tolerances
• Standard tolerances shop works to are
• Metal .001
• Plastic .01
• Wood .03
• Specify the tolerance that is really needed.
  Tighter tolerances than standard cost more.
• Before submission to shop have another project
  member review the drawing.

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Other Fabrication Issues

• How stable must fabed part be
• Sheet metal vs solid
• Welded or screwed together
• What type of fastener are to be used
• Screws, rivets, blind holes, ¼ turn, etc.
• Painting is possible
• Electrical safety an issue?
• Fire Hazard
• Heat dissipation from components.

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Any Questions or Comments ?????
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Lab Notebooks

• I still have some lab notebooks if anybody needs
  one.

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Till next time, have a good Thanksgiving