AFAB 120 CHAPTER 7 questions with
complete solutions
On very contoured parts, if the breathers do not cover the entire part, or if the breather under
the vacuum valve does not touch the other materials, the air flow will remain the same, and will
be pulled from the entire part as needed. TRUE OR FALSE
False
TRUE OR FALSE
It is not so important to maintain moisture content when storing films.
False
TRUE OR FALSE
A vacuum leak check is done to make sure the bag is sealed properly.
True
To properly install the vacuum valve base (hockey puck) before laying the bagging film, you
must: (Select all that apply)
- If any wrinkles form, work them out to be smooth.
- Avoid wrinkles in the bagging film around the valve because air can leak around it.
- None of the above
- Cut a slit into the bagging film over the vacuum base, insert the vacuum valve into he base,
and then seal it so it is airtight.
,- If any wrinkles form, work them out to be smooth.
- Avoid wrinkles in the bagging film around the valve because air can leak around it.
- Cut a slit into the bagging film over the vacuum base, insert the vacuum valve into he base,
and then seal it so it is airtight.
TRUE OR FALSE
If it is necessary to readjust the bagging film, you can pick it up and reposition it.
True
TRUE OR FALSE
Bleeders and breathers can be made of the same material and can be used interchangeably, this
is why they are referred to as bleeder/breather material.
True
Sealant tapes are used to maintain a positive seal between the surface of the tool/part and the
bagging films. Which of the following are true regarding sealant tape. (Select all that apply)
Sealant tape comes in a roll with a paper backing one side.
-The tape should hold tight even if the bagging film shrinks in the curing process, as well as
withstand the temperatures.,
-None of the above
-The seal must be complete and have no leaks so maximum atmospheric pressure is held
against the part.
, -Some BST tapes have a limited shelf life, storage and labeling may be required.
-The tape should hold tight even if the bagging film shrinks in the curing process, as well as
withstand the temperatures.,
-The seal must be complete and have no leaks so maximum atmospheric pressure is held
against the part.
-Some BST tapes have a limited shelf life, storage and labeling may be required.
Pressure should be applied to the surface during the curing operation until the component is
fully cured. Applying mechanical pressure achieves which of the following? (Check all that
apply)
-Compacts the fiber layers together.
-Removes air trapped between the vacuum schedule
-Holds the repair securely, preventing the patches from shifting in the curing process.
-Maintains the contour of the repair relative to the original part.
-Removes excess resin from the component, ensuring the proper resin-to-fiber reinforcement.
-Compacts the fiber layers together.
-Holds the repair securely, preventing the patches from shifting in the curing process.
complete solutions
On very contoured parts, if the breathers do not cover the entire part, or if the breather under
the vacuum valve does not touch the other materials, the air flow will remain the same, and will
be pulled from the entire part as needed. TRUE OR FALSE
False
TRUE OR FALSE
It is not so important to maintain moisture content when storing films.
False
TRUE OR FALSE
A vacuum leak check is done to make sure the bag is sealed properly.
True
To properly install the vacuum valve base (hockey puck) before laying the bagging film, you
must: (Select all that apply)
- If any wrinkles form, work them out to be smooth.
- Avoid wrinkles in the bagging film around the valve because air can leak around it.
- None of the above
- Cut a slit into the bagging film over the vacuum base, insert the vacuum valve into he base,
and then seal it so it is airtight.
,- If any wrinkles form, work them out to be smooth.
- Avoid wrinkles in the bagging film around the valve because air can leak around it.
- Cut a slit into the bagging film over the vacuum base, insert the vacuum valve into he base,
and then seal it so it is airtight.
TRUE OR FALSE
If it is necessary to readjust the bagging film, you can pick it up and reposition it.
True
TRUE OR FALSE
Bleeders and breathers can be made of the same material and can be used interchangeably, this
is why they are referred to as bleeder/breather material.
True
Sealant tapes are used to maintain a positive seal between the surface of the tool/part and the
bagging films. Which of the following are true regarding sealant tape. (Select all that apply)
Sealant tape comes in a roll with a paper backing one side.
-The tape should hold tight even if the bagging film shrinks in the curing process, as well as
withstand the temperatures.,
-None of the above
-The seal must be complete and have no leaks so maximum atmospheric pressure is held
against the part.
, -Some BST tapes have a limited shelf life, storage and labeling may be required.
-The tape should hold tight even if the bagging film shrinks in the curing process, as well as
withstand the temperatures.,
-The seal must be complete and have no leaks so maximum atmospheric pressure is held
against the part.
-Some BST tapes have a limited shelf life, storage and labeling may be required.
Pressure should be applied to the surface during the curing operation until the component is
fully cured. Applying mechanical pressure achieves which of the following? (Check all that
apply)
-Compacts the fiber layers together.
-Removes air trapped between the vacuum schedule
-Holds the repair securely, preventing the patches from shifting in the curing process.
-Maintains the contour of the repair relative to the original part.
-Removes excess resin from the component, ensuring the proper resin-to-fiber reinforcement.
-Compacts the fiber layers together.
-Holds the repair securely, preventing the patches from shifting in the curing process.
