CWRU EMAE 260 FINAL EXAM
QUESTIONS WITH CORRECT
ANSWERS
6 Categories of Fish-bone (Cause & Effect) Diagram - ANSWER-People
Method
Measurement
Machine
Material
Environment
Fatigue Failure - ANSWER-Condition:
+ many cycles
+ temperature fluctuation
+ high stress
+ strain hardening
Three stages: initiation, propagation, failure.
Safety - ANSWER-Safety: protection from exposure to hazards.
How to define a problem in engineering world? - ANSWER-- Interview customers
- Put yourself in customers' shoes.
- Figure out end result using customers' requirements
What does it mean to have high hardness? - ANSWER-• High hardness means:
--resistance to plastic deformation or cracking in
compression.
--better wear properties.
What is Impact Testing? What are some properties obtained from Impact Testing? -
ANSWER-sudden application of load without breaking.
Properties Obtained
DBTT
.•Notch sensitivity - Measures effects of imperfection
Material Pyramid, What are the 4 corners? What is in the middle? What does it
mean? - ANSWER-4 corners: structure, processing, property, performance.
List four pieces of information that should be included in your initial design
specification. - ANSWER-Cost
Time
Scope
Cust. req
QUESTIONS WITH CORRECT
ANSWERS
6 Categories of Fish-bone (Cause & Effect) Diagram - ANSWER-People
Method
Measurement
Machine
Material
Environment
Fatigue Failure - ANSWER-Condition:
+ many cycles
+ temperature fluctuation
+ high stress
+ strain hardening
Three stages: initiation, propagation, failure.
Safety - ANSWER-Safety: protection from exposure to hazards.
How to define a problem in engineering world? - ANSWER-- Interview customers
- Put yourself in customers' shoes.
- Figure out end result using customers' requirements
What does it mean to have high hardness? - ANSWER-• High hardness means:
--resistance to plastic deformation or cracking in
compression.
--better wear properties.
What is Impact Testing? What are some properties obtained from Impact Testing? -
ANSWER-sudden application of load without breaking.
Properties Obtained
DBTT
.•Notch sensitivity - Measures effects of imperfection
Material Pyramid, What are the 4 corners? What is in the middle? What does it
mean? - ANSWER-4 corners: structure, processing, property, performance.
List four pieces of information that should be included in your initial design
specification. - ANSWER-Cost
Time
Scope
Cust. req
