This quiz focuses on composite structures and transparent plastic materials used in aerospace engineering, assessing knowledge of metal fasteners, delamination risks, and inspection methods. It's designed to test understanding of material properties and structural integrity in modern aircraft.
True
False
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Thermoplastics
Polyester
Carbon
Aramid
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Separation of the laminates
An area of too much matrix between fiber layers
Less than full strength curing of the matrix
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May be repaired by gluing replacement skin to the inner core material with thermoplastic resin
Has a high strength to weight ratio.
Is lighter than single sheet skin of the same strength and is more corrosion resistant
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Prime the repair with a corrosion inhibitor and seal from the atmosphere
Paint the outside area with several coats of exterior paint
None. Honeycomb is usually made from a man made or fibrous material which is not susceptible to corrosion.
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2 inches in diameter
1 inches in diameter
4 inches in diameter
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Fill
Bias
Warp
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60:40
40:60
50:50
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MEK (methyl ethyl ketone)
A thixotropic agent.
Soap, water, and a scrub brush
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Requires the replacement of the damaged core and facing
Can be repaired by using a typical metal facing patch
Cannot be repaired
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An unairworthy repair
Improved wear resistance to the structure
Restored strength and flexibility
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Only No.1 is true
Only No.2 is true
Both No.1 and No.2 are true
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Water only
Water displacing oil
Water soluble oil
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Bonding on metal or cured composite patches.
Riveting on metal or cured composite patches
Laminating on new repair plies
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True
False
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Pot life
Service life
Shelf life
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Wood drill should be used
Standard twist drill should be used
Specially modified twist drill should be used
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True
False
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Strip the damaged area of all paint and shine a strong light through the structure
Use an eddy current probe on both sides of the damaged area
Use dye penetrant inspection procedures, exposing the entire damaged area to the penetrant solution.
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Tape
Filament
Splice
Roving
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Fill clock (or compass).
Bias clock (or compass)
Warp clock (or compass)
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Must be constructed of high strength aluminum-lithium alloy
Must be constructed of material such as titanium or corrosion resistant steel
May be constructed of any of the metals commonly used in aircraft fasteners.
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Release
Bleeder
Breather
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Cell edge
Cell side
Ribbon direction
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Brinelling
Hazing
Crazing
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True
False
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S
G
E
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Tightened to a firm fit, then backed off one full turn.
Tightened to a firm fit, plus one full turn
Tightened to a firm fit
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When rivets are used, adequate spacer or other satisfactory means to prevent excessive tightening of the frame to the plastic should be provided
When rivets or nuts and bolts are used, slotted holes are not recommended
When nuts and bolts are used, the plastic should be installed hot and tightened to a firm fit before the plastic cools.
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Covered with a thin coat of wax
Buffed with a clan, soft, dry cloth
Polished with rubbing compound applied with a damp cloth
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Sanding the damaged area until aerodynamic smoothness is obtained
Trimming the rough edges and sealing with paint
Filling with a putty consisting of a compatible resin and clean, short glass fibers
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A piece of resin impregnated glass fabric facing.
One or more coats of suitable resin (room temperature catalyzed) to the surface.
A sheet of polyethylene over the abraded surface and one or more coats of resin cured with infrared heat lamps
The orientation of the plies to the load direction.
The ability of the fibers to transfer stress to the matrix
A 60 percent matrix to 40 percent fiber ratio
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Weak in tension
Hygroscopic
Highly susceptible to impact damage
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High compressive strength across the fibers
High tensile strength in the fiber direction
High shear and compressive strength in the fiber direction
High shear strength perpendicular to the fiber direction.
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2, 3, and 4
1, 2, and 4
1, 3, and 4
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The size of the fibers.
The stacking sequence of the plies
The Matrix
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Possibility of causing delamination
Difficulty in forming a proper shop head.
Increased possibility of fretting corrosion in the fastener
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E
G
S
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Must be filled with resin to eliminate dangerous stress concentrations
May be repaired
May be filled with putty which is compatible with resin
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Greater than steel but less than aluminum
Greater than both steel and aluminum
Less than either steel or aluminum
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True
False
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Bevel method
Soak method
Heat method
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Use less catalyst than normal so the repair will be more flexible.
Add an extra amount of catalyst to the resin
Use short strips of fiberglass in the bonded repair
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Perform a chemical composition analysis
Have mixed enough for a test sample
Test the viscosity of the resin immediately after mixing
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Pick up the "noise" of corrosion or other deterioration occurring
Create sonogram pictures of the areas being inspected
Analyze ultrasonic signals transmitted into the parts being inspected
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1, 3, and 5
2, 3, and 4
1 and 3
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Zinc chloride will have no effect.
Acrylic has a yellowish tint when viewed from the edge.
Acetone will soften plastic, but will not change its color
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