Dr Parmigiani I thought I d send you a

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 Treacy Engineer @ Renovo Hardwood Bicycles ME Senior Project 2008 - 09

Capstone Design Week 4 Lecture • Announcements (Guests) • Ho. Q 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 Quality Overview • 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) Open minds. Open doors. TM • Progress report 2 (revised draft, hand-in for review) • Preliminary Proposal (final version, with signatures)

House of Quality Part 1: Done … 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 Open minds. Open doors. TM … if you now see problems, correct in Part 2 when ERs & TTs are added…

Customer Requirements Weighting Penalty E 1 E 2 Engineering Requirements (ER's) Score CR's Target (w/ tolerance) Testing Procedure (TP#) Design Link (DL#) Approval (print name, sign, and date): Team member 1: Team member 2: Team member 3: Faculty Advisor: Sponsor Mentor: Course Instructor: Engineering Requirements (ERs) Open minds. Open doors. TM • 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

Customer Requirements Weighting Penalty E 1 E 2 Engineering Requirements (ER's) Score CR's Target (w/ tolerance) Testing Procedure (TP#) Design Link (DL#) Approval (print name, sign, and date): Team member 1: Team member 2: Team member 3: Faculty Advisor: Sponsor Mentor: Course Instructor: Target (w/ tolerance) Open minds. Open doors. TM • 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 “ 15 lb”, Tolerance “<20 lb” • 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!

House of Quality Example • • 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 < 20 lb, < 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 sizing Customer Requirements Weight Penalty. E 1 E 2 Engineering Requirements (ER's) Weight < 20 lbs One person can easily carry across a room Open minds. Open doors. TM 20 No sharp No dimension edges > 12” X X X Target (w/ tol. ) 15 lb < 20 lb - 10” <12” TP# 1 2 3 DL# 1 2 3

House of Quality Example • • 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 Customer Requirements One person can easily carry across a room All control knobs labeled in English, German, and French Open minds. Open doors. TM Engineering Requirements (ER's) Weight Penalty E 1 E 2 20 Weight < 20 lbs X All control knobs No No sharp labeled in dimension > edges English, German, 12” and French X X LTE X TP# 15 lb < 20 lb 1 2 10” <12” 3 DL# 1 2 3 Target (w/ tol. ) - N/A 4 4

House of Quality Example • Requirement from Sponsor Water flow rate of 10 cu-in / min • Customer Requirements Water flow rate of at least 10 in 3/min within 1 sec. of activation, never a flow rate greater than 20 in 3/min (2 CRs) • Weighting 30, 35 • Engineering Requirements Flow > 10 in 3/min within 1 sec, Flow < 20 in 3/min (2 ERs) • Target 12 in 3/min in 0. 8 sec, maximum flow of 17 in 3/min. • Tolerance >10 in 3/min , <1 sec, <20 in 3/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 Customer Requirements Engineering Requirements (ER's) Weight Penalty E 1 E 2 Flow > 10 in 3/min Flow < 20 within 1 in 3/min sec Flow rate of at least 10 in 3/min within 1 sec Flow always < 20 in 3/min Open minds. Open doors. TM 30 X 35 X TP# 12 (>10) in 3/min in 0. 8 (<1) sec 5 DL# 5 Target (w/Tol) 17(<20) in 3/min 5 6

Status Meeting 2 • Same schedule as Status Meeting 1 • Bring written draft of Ho. Q 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 Open minds. Open doors. TM Failure to conduct a satisfactory status meeting will result in a 35 point penalty

Progress Report 3 Same schedule & format as Progress Report 1 Open minds. Open doors. TM

Discussion Points 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 Open minds. Open doors. TM