• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

Card Range To Study



Play button


Play button




Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

60 Cards in this Set

  • Front
  • Back

Engineering modeling step 1

Begin by formulating a question

"Who are you, comrade question?"

Engineering modeling step 2

Develop a list of assumptions

Engineering modeling step 3

Develop an appropriate model

Celebrities are generally not good models

Types of engineering models 1

Physical - Scale model, mock up, test app

Types of engineering models 2

Graphical - CAD, sketches

Types of Engineering models 3

Analytical - maths

Levels of Models

In increasing complexity:

Gut Feel

Order of Magnitude

Upper and Lower Bounds

Performance Prediction

Design Evaluation Cycle

How do we gain knowledge at less cost than failing late

Fail early, fail often

P Diagram

P diagram step 1

Identify output responses

P diagram step 2

Determine how accurate the output needs to be

P diagram step 3

identify input signals, control parameters and their limits, noises

P diagram last step

Verify Results

The more you know...

The more you realize what you don't know

Circle of influence

very small circle within circle of control

Richest man of babylon (rmb) rule 1

start saving 10 percent of income

rmb rule 2

control expenditures

rmb rule 3

invest to earn a return

rmb 4

invest in secure assets to protect money

rmb 5

pay off your major debts

rmb 6

insure income for old age to protect family

rmb 7

increase ability to earn

types of assembly operations

Retrieve, handle, mate

Best score on dfa workshet


For better dfa, minimize

component count

use of seperate fasteners




for better dfa, avoid

base repositioning

component characteristics that complicate retrieval

for better dfa, design:

With a base component for locating others

with an efficient assembly sequence

for specific types of retrieval

for symmetry

non symmetric parts to be clearly nonsymmetric

all parts from same direction

using chamfers, leads and compliance

maximum component accessibility


COnnection A must be before connection B

Connections diagram

dfa influences design by

encouraging fewer parts, each one possibly more complicated

dfa may result in

more expensive tooling

dfa most appropriate for

mass produced products

Habits of thought for math modeling


why do we need it

how will it be used

what specifically do we want to find

what data is given

what can be assumed

how should we develop it

what physical prinicples to apply

what will it predict

are the predictions valid

can we verify it

can we improve it

Dimensions and units

keep them consistent, and in the same net dimenstions

mathematical models are:

physical idealizations of systems

models developed to

increase understanding of how a system works

design = system defined by:

geometric configurations, materials used and tasks being performed

documenting a model (dm) step 1

purpose- concise statement of what is to be answered

dm step 2


dm step 3

p diagram

dm step 4


dm step 5

system and component diagrams

dm step 6

FBDS as needed

dm step 7

derivations of final equations

dm step 8

show final equations

dm step 9

graphs showing key relationships


Systematic approach to identify and prioritize risks of potential failure modes and prioritizing risk minimization efforts

FMEA goals

eliminate or minimize failure modes

design for safety

focus on quality of design


how serious a failure is, low s means no effect on customer, high s means youve probably killed them you imbecile


the likelihood of a failure occuring


likelihood that current controls keep a failure from reaching the customer


Risk Priority Number = Detectability * Occurence * Severity

fmea step 1

describe with p diagram

fmea step 2

id failure modes (how is it not reaching design intent)

fmea step 3

describe the effects of failures (result on the customer)

fmea step 4

Determine causes for failure (action or inaction caused by design

fmea step 5

describe the controls on the process

fmea step 6

rate severity, occurence, detection on a 1-5 scale, compute Rpn

fmea step 7

propose and take action

fmea step 8

assess the actions taken and determine new S, O, D and RPN