MAE486_Fall11_L6_S - MAE 486 Design of Mechanical Systems...

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Unformatted text preview: MAE 486 Design of Mechanical Systems Lecture 6 Fall 2011 Today s topics: Project management (Chapter 4); Review: How to Build a HOQ? •  •  •  •  •  The streamlined HOQ (Basic Version) Step 1: Construct RM1. Step 2: Construct RM2. Step 3: Construct Room 4 (RelaFon Matrix);  A set of symbols to represent, e.g., 0, 1, 3, 9…  Run down each EC in column, row by row, and ask its contribuFon to the CR in each row: Step 4: Construct Room 5 Review: Understanding RelaFonship Matrix •  An empty row •  An empty Column; •  A row W/O “9” assigned; •  A Column W. many #s; •  Diagonal matrix; Review: the CorrelaFon Matrix •  AddiFon: RM 3 (Roof of HOQ) •  What does it show? •  Why is it important? •  To determine, what do we need to know? –  Knowledge; –  Experience; Review: InterpretaFon of HOQ •  How to interpret it? •  Design parameters: –  What are already given? •  What is the role of HOQ? –  CTQ CRs  CTQ Ecs; Understand ECs •  Highest ranking ECs: o  What are they? o  ECs with a few possible #s: Use? o  ECs with many #s: Use? •  Lowest ranking ECs: •  Meaning? •  What should be considered in choosing the #s? Review: Product Design SpecificaFon (PDS) •  •  •  •  Why the product process planning important? What is PDS? How to make a good PDS? What should be emphasized? What should not? Review: Project Management (Chapter 4) •  •  •  •  •  •  Design: “team sport”. ObjecFves: What is the most important aatude? What is next? What should a good team have? Team Roles How to build a good team? What are the steps? EffecFve Team MeeFng •  How to have a good team meeFng? Problems with Teams •  What if there are “bad” team member behaviors? –  What are “bad” team member behavior? •  How to resolve them? Problem Solving Tools •  Useful in any probe situaFons; •  How to solve a problem? What are the steps? Tool I: Brainstorming Tool II: Affinity Diagram •  What is the goal? •  What is the goal? •  How? •  Difference from brainstorming? Cause Finding Tools •  Survey •  Pareto Chart –  Pareto principle •  Cause ­and ­effect diagram Cause ­and ­Effect Diagram Example Problem: Lack of undergraduate involvement in research Causes: Cause Finding Tool: Why ­why Diagram •  Goal: •  StarFng quesFon: Cause Finding Tool: InterrelaFonship Diagraph •  What is it used for? •  How to build it? –  Major causes? –  How to dig out the relaFon? –  What to write down? –  InterpretaFon: •  Circle with large # of outgoing arrows ( ) meaning? •  Circle with large # of incoming arrows ( ) meaning? SoluFon Planning & ImplementaFon Tools •  How ­how diagram –  Goal: –  StarFng quesFon: –  When use it? •  Force ­field Analysis –  Goal: –  What is it for? –  How to build it? SoluFon Planning & ImplementaFon Tools •  ImplementaFon Plan –  Goal: Example: ImplementaFon to Design Problem defini-on: The indicator light on the SKX ­7 game box does not have the require durability to perform its funcFon. Time Management •  Time management: student vs. engineer? •  How to achieve high efficiency? Planning & Scheduling •  “Time is money”. •  Common problem of Engineers in Fme management: •  Decision to make: Planning Tool: Work Breakdown Structure •  What is it? Planning Tool: Ganl Chart •  What is it? CriFcal Path Method •  What is it for? •  Why is it needed? •  How to build it? –  Know the bolts and nuts first. –  Know the rules; •  Dummy acFviFes examples. CriFcal Path Method •  Know the rules: –  DuraFon (D); –  Earliest start Fme (ES); –  Latest start Fme (LS); –  Earliest finish Fme (EF); –  Latest finish Fme (LF); –  Total float (TF); –  CriFcal path: ...
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This note was uploaded on 09/30/2011 for the course MECH 486 taught by Professor Zho during the Spring '11 term at Rutgers.

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