1

SPIRIT

Day 8 Wednesday July 18, 20070900-1530 Cohort 1 (makeup and extensions) 0900 Announcements (NG/BC)

Cohort 1 Introductions (Cohort #1 Says Hello)0930 Demo of CEENBoT and remote control (Dan Norman)0945 Planning a TekBot Problem (Neal)

Teachers design a TekBot Problem(Given ramps, stopwatches, materials list, etc.)

1000 Robots and WebsitesDemonstration of Robotics-Related Websites (Elliott Ostler)

1030 Break1045 Modern Engineering Constraints (HD)

Manufacturability, Affordability, Reliability, Sustainability, Quality

1115 Engineering Disciplines (HD)Civil, Mechanical, Electrical, Chemical, Industrial, BioX

1130 Visit lab to see Cohort 11200 Lunch1300 Experimenting with your TekBot (Neal)

(Teachers create various navigation exercises)(Focus on navigating mazes, ramp exercises, springs, etc.)

(or individual technical assistance in lab as needed by some teachers)1530 Adjourn (adjourn directly from experimentation exercise)

2

SPIRIT

SSilicon ilicon PPrairie rairie IInitiative on nitiative on RRobotics in obotics in IInformation nformation TTechnologyechnology

Modern Modern Engineering Engineering ConstraintsConstraints

3

SPIRIT

Concurrent EngineeringConcurrent Engineering Design teams include others in

addition to engineersManufacturing expertsMarketing and sales professionalsReliability expertsCost accountantsLawyers

Concern with all these areas and their impact on the design is concurrent engineering.

4

SPIRIT

-ilities-ilities Concurrent engineering demands

consideration of the complete life cycle of the product, process, or project.

Design for: Manufacturability Affordability Reliability Sustainability Quality

5

SPIRIT

Can this Design Be Made? (DFM)Can this Design Be Made? (DFM) The design of a product has an

ENORMOUS impact on its manufacture.

A basic DFM methodology Estimate the cost for a given alternative Reduce the costs of components Reduce the costs of assembly Consider the effects on other objectives If not acceptable, revise the design REPEAT …

6

SPIRIT

Design for Assembly (DFA)Design for Assembly (DFA) Limit the number of components Using standard components Use a base component on which

other components can be located

Use components the facilitate retrieval and assembly

Maximize accessibility during manufacturing and maintenance

7

SPIRIT

AffordabilityAffordability Engineering Economics

The time value of moneyMoney obtained sooner is more

valuable than money obtained later.Money spent sooner is more costly

than money spent later.Design decisions made today will

translate into streams of “financial events” in the future.

8

SPIRIT

Arthur M. Wellington’s definition of engineering

“the art of doing that well with one dollar which any bungler can do with two.”

9

SPIRIT

ReliabilityReliability To an engineer: the probability that

an item will perform its function under stated conditions of use and maintenance for a stated measure of a variate.

Incidental failure Catastrophic failure Maintainability

Parts easily accessed and repaired Redundancy

10

SPIRIT

SustainabilitySustainability One generation’s progress can be the

next’s nightmare. Environmental responsibility is

incorporated directly into the ethical obligations of engineering. Air and water quality Energy consumption Disposal

Life cycle assessment analysis Inventory Impact Improvement

11

SPIRIT

Design for QualityDesign for Quality All of the –ilities are components of

the design for quality A quality design satisfies all

constraints Fully functional within the performance

specifications Meets the objectives as well or better than

alternative designs All the work of the design process is

directed to design for quality.

12

SPIRIT

House of QualityHouse of Quality

13

SPIRIT

Laptop Computer House of Laptop Computer House of QualityQuality