AFAB 115 Exam 2 Questions With Correct
Answers
What precautions should you take to avoid damaging anodized surfaces during
| | | | | | | | | | |
corrosion removal - CORRECT ANSWER✔✔-Avoid deconstruction of the oxide film
| | | | | | | | |
in unaffected area. Avoid use of steel wool, steel wire brushes, or severe abrasive
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material.
| |
Can use aluminum wool, aluminum wire brushes or fiber bristle brushes
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What makes knowledge of metal and its properties so important to aircraft
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maintained technicians? - CORRECT ANSWER✔✔-A slight deviation from design
| | | | | | | | |
specification , or substitution of inferior materials, may result in the loss of both
| | | | | | | | | | | | | |
lives and equipment.
| |
Ferrous metals - CORRECT ANSWER✔✔-metals that contain iron as principal
| | | | | | | | | |
constituent
Strength - CORRECT ANSWER✔✔-Ability of a material to withstand forces which
| | | | | | | | | | |
tend to deform it in any direction, and the ability of that material to resist stress
| | | | | | | | | | | | | | | |
without breaking. |
4 types of strength - CORRECT ANSWER✔✔-Tensile, yield, shear, & and bearing
| | | | | | | | | | | |
strength
, How can the hardness of metal be increased? - CORRECT ANSWER✔✔-By cold
| | | | | | | | | | | |
working the metal. In the case of steel and certain aluminum alloys, by heat
| | | | | | | | | | | | | |
treatment.
Two types of conductivity - CORRECT ANSWER✔✔-Thermal & electrical
| | | | | | | |
Thermal conductivity - CORRECT ANSWER✔✔-Ability of a metal to transmit heat.
| | | | | | | | | | |
Thermal conductivity of a metal must be caredully considered if the metal is to be
| | | | | | | | | | | | | |
used in applications where the metal will be wielded or where expansion and
| | | | | | | | | | | | | |
contraction are critical. | |
Electrical conductivity - CORRECT ANSWER✔✔-Ability of metal to freely accept
| | | | | | | | | |
and release electrons when an electrical current is applied. To eliminate radio
| | | | | | | | | | | |
interference in aircraft, electrical conductivity and bonding of metal parts must be
| | | | | | | | | | |
|considered
Why is the density of a metal important in choosing material to be used in
| | | | | | | | | | | | | | |
aircraft? - CORRECT ANSWER✔✔-Density is critical when choosing a material to
| | | | | | | | | | |
be used in the design of a part, so that the proper weight and balance of the
| | | | | | | | | | | | | | | | |
aircraft can be maintained.
| | |
What does each of the four digits in the index numbering system used with
| | | | | | | | | | | | | |
aluminum alloys indicate? - CORRECT ANSWER✔✔-First - indicates major alloying
| | | | | | | | | |
element used. |
Second- indicates alloy modifications.
| | |
(If 0 =original alloy)
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Alloys using copper are 2000 series (natural heat treatment T4)
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Answers
What precautions should you take to avoid damaging anodized surfaces during
| | | | | | | | | | |
corrosion removal - CORRECT ANSWER✔✔-Avoid deconstruction of the oxide film
| | | | | | | | |
in unaffected area. Avoid use of steel wool, steel wire brushes, or severe abrasive
| | | | | | | | | | | | | |
material.
| |
Can use aluminum wool, aluminum wire brushes or fiber bristle brushes
| | | | | | | | | |
What makes knowledge of metal and its properties so important to aircraft
| | | | | | | | | | | |
maintained technicians? - CORRECT ANSWER✔✔-A slight deviation from design
| | | | | | | | |
specification , or substitution of inferior materials, may result in the loss of both
| | | | | | | | | | | | | |
lives and equipment.
| |
Ferrous metals - CORRECT ANSWER✔✔-metals that contain iron as principal
| | | | | | | | | |
constituent
Strength - CORRECT ANSWER✔✔-Ability of a material to withstand forces which
| | | | | | | | | | |
tend to deform it in any direction, and the ability of that material to resist stress
| | | | | | | | | | | | | | | |
without breaking. |
4 types of strength - CORRECT ANSWER✔✔-Tensile, yield, shear, & and bearing
| | | | | | | | | | | |
strength
, How can the hardness of metal be increased? - CORRECT ANSWER✔✔-By cold
| | | | | | | | | | | |
working the metal. In the case of steel and certain aluminum alloys, by heat
| | | | | | | | | | | | | |
treatment.
Two types of conductivity - CORRECT ANSWER✔✔-Thermal & electrical
| | | | | | | |
Thermal conductivity - CORRECT ANSWER✔✔-Ability of a metal to transmit heat.
| | | | | | | | | | |
Thermal conductivity of a metal must be caredully considered if the metal is to be
| | | | | | | | | | | | | |
used in applications where the metal will be wielded or where expansion and
| | | | | | | | | | | | | |
contraction are critical. | |
Electrical conductivity - CORRECT ANSWER✔✔-Ability of metal to freely accept
| | | | | | | | | |
and release electrons when an electrical current is applied. To eliminate radio
| | | | | | | | | | | |
interference in aircraft, electrical conductivity and bonding of metal parts must be
| | | | | | | | | | |
|considered
Why is the density of a metal important in choosing material to be used in
| | | | | | | | | | | | | | |
aircraft? - CORRECT ANSWER✔✔-Density is critical when choosing a material to
| | | | | | | | | | |
be used in the design of a part, so that the proper weight and balance of the
| | | | | | | | | | | | | | | | |
aircraft can be maintained.
| | |
What does each of the four digits in the index numbering system used with
| | | | | | | | | | | | | |
aluminum alloys indicate? - CORRECT ANSWER✔✔-First - indicates major alloying
| | | | | | | | | |
element used. |
Second- indicates alloy modifications.
| | |
(If 0 =original alloy)
| | |
Alloys using copper are 2000 series (natural heat treatment T4)
| | | | | | | | |
