VERIFIED ANSWERS GRADED A+
H2O si an example of a(n) ________
Molecule
True or false. Materials used for machine bases like cast iron and foundations of buildings have good
comprehensive strength.
true
A static load is applied to a specimen. That load permanently deforms the work piece. This is called
what? (ATMAE)
-Elasticity
-Fatigue
-Plasticity
-Ductility
plasticity
If you are working on a project building radiators for large earth moving equipment. You need to select
the proper material to construct these radiators. Which of the following would be a good choice.
Ceramic
Copper
Stainless Steel
Carbide
copper
What information can you find on an S-N diagram?
Stress vs cycles
Stress vs number of degrees of heat treat
Stress vs nano newtons of force on the crystal
Stress vs non compliance
stress vs cycles
T or F: When choosing a material for use in a project that will be subjected to repeated high impact
ceramics would be a good choice
False
T or F: A Rock well test is a test of a material's hardness
true
Most industrial material become what as they are heated:
Weaker
Stronger
, Tougher
porous
weaker
T or F: A Rock well test is a test of a material's hardness?
true
A material's response to internal and external forces is measured in __________.
Ohms
Stress
Load
stress
Ferrous metal have at least _______ % of iron content.
10%
33.3%
50%
75%
50%
_________ failure occurs when a material is subjected to a repeated loading and unloading. This type of
loading is referred to as cyclic loading. A good example would be internal automotive engine parts.
Ductile fracture
Fatigue
Yield point
Elastic limit
Fatigue
What is the biggest advantage of ceramics?
Good shock resistance
Very flexible
Can withstand high heat
All are correct
can withstand high heat
A test specimen is clamped in a machine. The machine applies pulling force until the specimen breaks.
This is an example of what type of test?
Hardness
Tensil
Impact
All are correct
Tensil