2210 final review
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| show | a. Compression Failure
b. Shear Failure
c. Decay
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| show | a. Increase strength
b. Obtain uniform strength
c. Reduce weight
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| show | a. Bearing surface of the wood fibers
b. Glue
c. Reinforcement plates
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| show | a. Stretch
b. Compression
c. Torsion
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| Where is information found concerning acceptable species substitutions for wood materials used in aircraft repair? | show 🗑
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| show | a. Careful inspection fails to reveal any decay
b. They produce only a small effect on grain direction
c. Local irregularities do not exceed limitations specified for spiral diagonal grain
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| Which statement concerning wood decay is correct? | show 🗑
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| show | a. They produce a small effect on grain direction
b. They have no mineral streaks
c. No pitch pockets are within 12 inches
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| Laminated wood spars may be substituted for solid rectangular wood spars | show 🗑
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| show | a. when a joint has separated and the glue surface shows only the imprint of the wood with no wood fibers clinging to the glue.
b. when a joint has separated and the glue surface shows pieces of wood and/or wood fibers clinging to the glue.
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| Compression failures in wood aircraft structures are characterized by buckling of the fibers that appear as streaks on the surface | show 🗑
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| The strength classification of fabrics used in aircraft covering is based on | show 🗑
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| Fungicide and mildewcide additives are important for fabric covered aircraft, such as | show 🗑
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| Moisture, mildew, chemicals, and acids have no effect on | show 🗑
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| show | a. 70 percent of its original strength.
b. 70 percent of the original strength for intermediate fabric.
c. 56 pounds per inch warp and fill.
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| show | a. Resin impregnated cloth tape and cellulose tape.
b. Aluminum foil and resin impregnated cloth tape.
c. Aluminum foil and cellulose tape.
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| show | a. Sewed or laced on before dope is applied.
b. Doped on immediately prior to the finish coat.
c. Doped on after the first or second coat of dope.
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| show | a. To help prevent 'ripple formation' in covering fabric.
b. To provide additional wear resistance over the edges of fabric forming structures.
c. To provide additional anti-tear resistance under reinforcement tape.
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| Which statement is true regarding paint system compatibility? | show 🗑
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| show | a. Orange peel
b. Blushing
c. Pinholes
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| Which type of coating typically includes phosphoric acid as one of its components at the time of application? | show 🗑
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| show | a. Reducer
b. Retarder
c. Rejuvenator
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| Which properly applied finish topcoat is the most durable and chemical resistant? | show 🗑
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| show | a. provide a silver color.
b. aid in sealing out moisture from the fabric.
c. reflect ultraviolet from the fabric.
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| show | a. Too much material applied in one coat.
b. Material is being applied too fast.
c. Low atmospheric humidity
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| show | a. wipe the surface with methyl ethyl ketone (MEK).
b. remove any contaminants from the surface with a paper towel.
c. avoid touching the surface with bare hands.
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| Which of the following is a hazard associated with sanding on fabric covered surfaces during the finishing process? | show 🗑
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| show | a. first, full-bodied, brushed-on coat to prevent fungus damage.
b. first coat to prevent fabric rotting and are applied thin enough to saturate the fabric.
c. final, full-bodied, brushed-on coat to reduce blushing.
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| show | a. E-glass
b. S-glass
c. G-glass
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| What type of bit should be used to drill holes in Plexiglass? | show 🗑
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| show | a. Thermoplastic
b. Thermocure
c. Thermoset
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| show | a. Improved strength-to-weight ratio, less density, and lower stress concentrations.
b. Greater concentrations of resin in edges and corners.
c. Less density and improved strength-to-weight ratio.
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| Which of the following are generally characteristic of aramid fiber (Kevlar) composites? | show 🗑
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| Fiberglass laminate damage that extends completely through one facing and into the core | show 🗑
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| Which of the following drill bit types work best when drilling an aramid fiber (Kevlar) composite laminate? | show 🗑
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| Composite fabric material is considered to be the strongest in what direction? | show 🗑
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| show | a. By picking up the 'noise' of any deterioration that may be present.
b. By analyzing ultrasonic signals transmitted into the parts being inspected.
c. By creating sonogram pictures of the areas being inspected
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| When making repairs to fiberglass, cleaning of the area to be repaired is essential for a good bond. The final cleaning should be made using | show 🗑
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| show | a. Fill clock (or compass).
b. Bias clock (or compass).
c. Warp clock (or compass).
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| Repairing advanced composites using materials and techniques traditionally used for fiberglass repairs is likely to result in | show 🗑
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| show | a. strip the damaged area of all paint and shine a strong light through the structure.
b. use dye-penetrant inspection procedures, exposing the entire damaged area to the penetrant solution.
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| show | a. E-glass
b. S-glass
c. G-glass
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| Which of the following are generally characteristic of carbon/graphite fiber composites? | show 🗑
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| One of the best ways to assure that a properly prepared batch of matrix resin has been achieved is to | show 🗑
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| show | a. cell side
b. ribbon direction
c. cell edge
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| Sandwich panels made of honeycomb construction are used on aircraft because this type of construction | show 🗑
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| What precaution, if any, should be taken to prevent corrosion inside a repaired honeycomb structure? | show 🗑
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| When inspecting a composite panel using the ring test/tapping method, a dull thud may indicate | show 🗑
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| show | a. 40:60
b. 50:50
c. 60:40
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| When repairing large, flat surfaces with polyester resins, warping of the surface is likely to occur. One method of reducing the amount of warpage is to | show 🗑
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| The strength and stiffness of a properly constructed composite buildup depends primarily on | show 🗑
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| Proper prepreg composite lay-up curing is generally accomplished by | show 🗑
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| The length of time that a catalyzed resin will remain in a workable state is called the | show 🗑
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| The preferred way to make permanent repairs on composites is by | show 🗑
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| Fiberglass damage that extends completely through a laminated sandwich structure | show 🗑
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| show | a. Sharp ringing
b. Dull thud
c. Sharp thud
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| show | a. Bleeder
b. Breather
c. Release
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| show | a. Water soluble oil.
b. Water displacing oil.
c. Water.
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| Fiberglass laminate damage not exceeding the first layer or ply can be repaired by | show 🗑
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| show | a. a piece of resin-impregnated glass fabric facing.
b. one or more coats of suitable resin (room-temperature catalyzed) to the surface.
c. a sheet of polyethylene over the abraded surface and one or more coats of resin cured with infrared heat lamps.
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| Which of the following, when added to wet resins, provide strength for the repair of damaged fastener holes in composite panels? | show 🗑
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