Dr. Parmigiani, I thought I'd send you a message and let you know where I've ended up since college… 

… As you may recall I took senior project from you a few years back and did the human powered vehicle project … …Since I left I know that you've moved towards a fusing of industrial and mechanical engineering.  My experience so far supports that move as I am constantly required to think of how the parts will be made and how they will fit into to our stream of labor and lean manufacturing etc.  In a constant push to make more things faster,without sacrificing quality (and who wouldn't want that) I find myself more concerned with process improvements than product improvements and also more excited about them…

Brendan TreacyEngineer @ Renovo Hardwood BicyclesME Senior Project 2008 - 09

Open minds.Open doors.TM

Capstone DesignCapstone DesignWeek 4 Lecture

Capstone DesignCapstone DesignWeek 4 Lecture

• Announcements (Guests)

• HoQ Part 2 (Parmigiani)

• Status Meeting 2 (Parmigiani)

• Progress Report 2 (Parmigiani)

• System Analysis / Functional Decomposition (Funk)

• Requirement Verifiability (Funk)

• Preliminary Proposal (Funk)

Open minds.Open doors.TM

House of QualityHouse of QualityOverviewOverview

House of QualityHouse of QualityOverviewOverview

• Provides a concise diagram of project requirements

• Constructed in three parts in this course

• Part 1: CRs & Weightings

• Part 2: ERs & Targets/Tolerances

• Part 3: Testing Plans & Design Links

• Part 1: Done (but can be changed this term w/out petition, just get signatures)

• Part 2: Next

• Status meeting 2 (draft to discuss)

• Progress report 2 (revised draft, hand-in for review)

• Preliminary Proposal (final version, with signatures)

Open minds.Open doors.TM

Customer Requirements (CRs)

• A complete listing, in the “language of the sponsor”, of what must be done• Each CR deals with one concept (e.g. don’t group “Small” and “Lightweight”) • Example: “Device must be lightweight”• One sponsor requirement may generate several CR’s (e.g. “Portable”)• Must be approved by team, sponsor mentor, faculty advisor, course instructor• Project scope defined in CR's ... pay close attention!

Weightings

• Indicate relative importance of each CR (greater weighting more important)• Total of 250 points to distribute among CRs (i.e. sum of all weightings = 250)• Example: “Device must be lightweight” given weighting of 50. • Low Technical Effort (LTE) CRs: Not given numerical weighting, but must be met.• Must be approved by team, sponsor mentor, faculty advisor, course instructor• Very important in grading Evaluation 1 and Evaluation 2 in winter term

House of QualityHouse of QualityPart 1: Done … Part 1: Done …

House of QualityHouse of QualityPart 1: Done … Part 1: Done …

… … if you now see problems, correct in Part 2if you now see problems, correct in Part 2when ERs & TTs are added…when ERs & TTs are added…

… … if you now see problems, correct in Part 2if you now see problems, correct in Part 2when ERs & TTs are added…when ERs & TTs are added…

Open minds.Open doors.TM

Engineering Requirements (ERs)

• Define CRs in terms of technical, measurable specifications• Generated from Customer Requirements (One CR may generate several ERs)• Ex.: CR “Device must be lightweight” maps to ER “Weighs less than 20 lb”• Used in specifying and evaluating design concepts• Must be approved by team, sponsor mentor, faculty advisor, course instructor• Ability to properly test and satisfy ERs constitutes 50% of winter term grade

CustomerRequirements

Weighting PenaltyE1

ScoreE2

ScoreEngineering Requirements (ER's)

CR's

Target (w/ tolerance)

Testing Procedure (TP#)

Design Link (DL#)

Approval (print name, sign, and date):Team member 1: Faculty Advisor:Team member 2: Sponsor Mentor:Team member 3: Course Instructor:

Open minds.Open doors.TM

Target (w/ tolerance)

• The Target is the design-to value for an ER (value to use in calculations)• The Tolerance (+/- value, <>, etc.) defines the amount of permissible variation• Example: ER “Weighs less than 20 lb” has Target “15lb”, Tolerance “<20lb”• ER satisfied if test result = target value within tolerance• Must be approved by team, sponsor mentor, faculty advisor, course instructor• Don’t use the extreme-permitted ER value as the design-to value!

CustomerRequirements

Weighting PenaltyE1

ScoreE2

ScoreEngineering Requirements (ER's)

CR's

Target (w/ tolerance)

Testing Procedure (TP#)

Design Link (DL#)

Approval (print name, sign, and date):Team member 1: Faculty Advisor:Team member 2: Sponsor Mentor:Team member 3: Course Instructor:

Open minds.Open doors.TM

House of QualityHouse of QualityExampleExample

House of QualityHouse of QualityExampleExample

• Original requirement from Sponsor Portable• Customer Requirement One person can easily carry across a room• Weighting 20• Engineering Requirements Weighs < 20 lbs, no sharp edges, no dimension > 12” (3 ER’s)• Target 15 lb, largest dimension of 10”• Tolerance +5/-15 lb, +2/-10" OR < 20lb, < 12" (include units!)• Test Plan (Summary, you’ll need more detail) 1. Weigh, 2. Inspect for sharp edges, 3.Measure• Design Link (Summary, you’ll need more detail) 1. Material selection, 2. Fabrication method, 3. Component

sizingCustomer

RequirementsWeight

Penalty

E1

E2

Engineering Requirements (ER's)

Weight < 20

lbsNo sharp

edgesNo dimension

> 12”One person can easily

carry across a room20 X X X

Target (w/ tol.)15 lb

< 20 lb-

10”<12”

TP# 1 2 3

DL# 1 2 3

Open minds.Open doors.TM

• Requirement from Sponsor All control knobs labeled in English, German, and French• Customer Requirements All control knobs labeled in English, German, and French• Weighting LTE (Low Technical Effort)• Engineering Requirements All control knobs labeled in English, German, and French• Target & Tolerance N/A • Test Plan (Summary) 4. Professor from German / French depts. verifies labels meet needs• Design Link (Summary) 4. Describe how label material selection and size are appropriate

House of QualityHouse of QualityExampleExample

House of QualityHouse of QualityExampleExample

CustomerRequirements

Weight Penalty E1 E2Engineering Requirements (ER's)

Weight <

20 lbsNo sharp

edges

No dimension >

12”

All control knobs labeled in

English, German, and French

One person can easily carry across a room

20 X X X

All control knobs labeled in English, German, and

FrenchLTE X

Target (w/ tol.)15 lb

< 20 lb-

10”<12”

N/A

TP# 1 2 3 4

DL# 1 2 3 4

Open minds.Open doors.TM

• Requirement from Sponsor Water flow rate of 10 cu-in / min

• Customer Requirements Water flow rate of at least 10 in3/min within 1 sec. of activation, never a flow rate greater than 20 in3/min (2 CRs)

• Weighting 30, 35• Engineering Requirements Flow > 10 in3/min within 1 sec, Flow < 20 in3/min (2 ERs)• Target 12 in3/min in 0.8 sec, maximum flow of 17 in3/min.• Tolerance >10 in3/min , <1 sec, <20 in3/min• Test Plan (summary) 5. Using flow meter and timing device, measure flow rates.• Design Link (summary) 5 & 6 Describe how piping, pump, and valve selection satisfies these ERs

CustomerRequirements

Weight Penalty E1 E2Engineering Requirements (ER's)

Flow > 10 in3/min within 1

sec

Flow < 20 in3/min

Flow rate of at least 10 in3/min within 1 sec

30 X

Flow always < 20 in3/min 35 X

Target (w/Tol)

12 (>10) in3/min in 0.8 (<1)

sec

17(<20) in3/min

TP# 5 5

DL# 5 6

House of QualityHouse of QualityExampleExample

House of QualityHouse of QualityExampleExample

Open minds.Open doors.TM

Status Meeting 2Status Meeting 2Status Meeting 2Status Meeting 2

• Same schedule as Status Meeting 1

• Bring written draft of HoQ Part 2

• CRs & Weightings

• ERs & TTs

• Bring documentation (drawings, sketches, plans) of alternate designs you are considering … the results of brainstorming sessions … a which you intend to pursue

Failure to conduct a satisfactory status meeting will result in a 35 point penalty

Open minds.Open doors.TM

Same schedule & format as Progress Report 1

Progress Report 3Progress Report 3Progress Report 3Progress Report 3

Open minds.Open doors.TM

Discussion PointsDiscussion PointsERs from CRs ERs from CRs

Discussion PointsDiscussion PointsERs from CRs ERs from CRs

1. Device shall autonomously traverse a predetermined path above the vineyard

2. Weight distribution must be within 10% of original design

3. System must be self contained

4. Device shall not splash liquid

5. The device shall offer easy blade changes

6. Device shall be low maintenance