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10026 final test, 20 Q, 17%
20問 • 2年前
  • Zachary Halycz
  • 通報

    問題一覧

  • 1

    WHAT IS THE PURPOSE OF SHOT/FLAP PEEENING?

    process of working a metals surface to “improve” its material properties. usually by mechanical means such as hammer blows or shot peening “relieves stresses in metal surfaces, prevents stress related failure of part”

  • 2

    WHAT ARE THE 2 MAIN FACTORS THAT CAN BE CONTROLLED DURING FLAPPER PEENING?

    intensity (speed), time of peening

  • 3

    WHAT ARE THE "FLAPS" MADE OF FOR FLAP PEENING?

    Has captive shot embedded in rubberized fabric flaps “Tungten Beads”

  • 4

    HOW IS "ULTRASONIC PEENING" ACCOMPLISHED?

    by propelling balls onto the part via ultrasonic excitation. “introduces compressive stresses deeper than traditional shot peening for increased fatigue life”

  • 5

    3 TYPES OF ALMEN STRIPS ARE?

    N strip = .031” A strip = .051” C strip = .094”

  • 6

    WHAT DO YOU USE TO MEASURE THE ARC HEIGHT OF AN ALMEN STRIP?

    almen gage

  • 7

    WHAT IS THE MAIN FACTOR THAT CAN CHANGE INTENSITY WHEN FLAP PEENING?

    1. flap rotation speed RPM 2. peening time 3. mandrel height

  • 8

    WHAT METHODS ARE USED TO PROTECT AGAINST INTERNAL CORROSION ON TUBULAR STRUCTURE?

    internally protected evenly with corrosion inhibiting fluids or inert gases ex. linseed oil, water displacing compounds, inert gases “nitrogen”

  • 9

    WHAT IS AN ADVANTAGE USING INERT GAS FOR INTERNAL CORROSION PROTECTION ON TUBULAR STRUCTURE?

    should the frame crack and gas leak out, a drop in pressure will be detected. allows stressed components to be monitored

  • 10

    WHEN MIXING A SEALANT WITH A CATALYST WHAT MUST YOU CONSIDER?

    accurate proportioning and thorough mixing of the two components are very important to ensure complete and even cure

  • 11

    IS IT IMPORTANT TO TAKE THE TEMPERATURE OF THE AIRCRAFT STRUCTURE BEFORE SEALING IF IT IS OUTSIDE? TRUE/FALSE

    yes. temperature and humidity affect curing of sealant and type of sealant to be used on aircraft.

  • 12

    WHAT ARE LEVELING COMPOUNDS USED FOR?

    used for filling small pockets of aircraft structures to aid in the drainage of water and other fluids.

  • 13

    WHY DO WE INSPECT AND TEST AIRCRAFT DRAINS?

    1. corrosion 2. damage to leveling compound

  • 14

    HOW DO WATER DISPLACING COMPOUNDS WORK?

    light duty “oil- like” having ability to displace water and wick faying surfaces, cracks “provides a wet non-drying thin protective coating of one mil 0.025m”. not long lasting protection

  • 15

    3 GENERAL CLASSIFICATIONS FOR SEALANT ARE?

    1. pliable sealants 2. drying sealants 3. curing sealants

  • 16

    WHAT IS "SHELF LIFE"?

    the length of time the material may be stored and used without its integrity being affected

  • 17

    WHAT ARE THE 3 MOST COMMON PROBLEMS WHEN MIXING/USING SEALANTS?

    1. when sealant does not cure or takes too long to cure 2. marbleized (streaky) sealant is caused by incomplete mixing. base material will not cure 3. surface must be clean for sealant adhesion. unwanted moisture from contaminated surface can cause corrosion.

  • 18

    WHY WOULD YOU USE A ROLLER TO APPLY SEALANT?

    used to spread sealant “uniformly” over the entire surface to desired thickness (typically 10 to 15 mils)

  • 19

    CORROSION PREVENTATIVE COMPOUNDS ARE PLACED IN 2 MAJOR CATEGORIES. WHAT ARE THEY?

    1. water displacing 2. non-water displacing

  • 20

    CORROSION INHIBITORS ARE NOT APPLIED IN WHAT AREAS OF THE AIRCRAFT?

    1. electrical connectors 2. control cables 3. pulleys 4. teflon bearings

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    問題一覧

  • 1

    WHAT IS THE PURPOSE OF SHOT/FLAP PEEENING?

    process of working a metals surface to “improve” its material properties. usually by mechanical means such as hammer blows or shot peening “relieves stresses in metal surfaces, prevents stress related failure of part”

  • 2

    WHAT ARE THE 2 MAIN FACTORS THAT CAN BE CONTROLLED DURING FLAPPER PEENING?

    intensity (speed), time of peening

  • 3

    WHAT ARE THE "FLAPS" MADE OF FOR FLAP PEENING?

    Has captive shot embedded in rubberized fabric flaps “Tungten Beads”

  • 4

    HOW IS "ULTRASONIC PEENING" ACCOMPLISHED?

    by propelling balls onto the part via ultrasonic excitation. “introduces compressive stresses deeper than traditional shot peening for increased fatigue life”

  • 5

    3 TYPES OF ALMEN STRIPS ARE?

    N strip = .031” A strip = .051” C strip = .094”

  • 6

    WHAT DO YOU USE TO MEASURE THE ARC HEIGHT OF AN ALMEN STRIP?

    almen gage

  • 7

    WHAT IS THE MAIN FACTOR THAT CAN CHANGE INTENSITY WHEN FLAP PEENING?

    1. flap rotation speed RPM 2. peening time 3. mandrel height

  • 8

    WHAT METHODS ARE USED TO PROTECT AGAINST INTERNAL CORROSION ON TUBULAR STRUCTURE?

    internally protected evenly with corrosion inhibiting fluids or inert gases ex. linseed oil, water displacing compounds, inert gases “nitrogen”

  • 9

    WHAT IS AN ADVANTAGE USING INERT GAS FOR INTERNAL CORROSION PROTECTION ON TUBULAR STRUCTURE?

    should the frame crack and gas leak out, a drop in pressure will be detected. allows stressed components to be monitored

  • 10

    WHEN MIXING A SEALANT WITH A CATALYST WHAT MUST YOU CONSIDER?

    accurate proportioning and thorough mixing of the two components are very important to ensure complete and even cure

  • 11

    IS IT IMPORTANT TO TAKE THE TEMPERATURE OF THE AIRCRAFT STRUCTURE BEFORE SEALING IF IT IS OUTSIDE? TRUE/FALSE

    yes. temperature and humidity affect curing of sealant and type of sealant to be used on aircraft.

  • 12

    WHAT ARE LEVELING COMPOUNDS USED FOR?

    used for filling small pockets of aircraft structures to aid in the drainage of water and other fluids.

  • 13

    WHY DO WE INSPECT AND TEST AIRCRAFT DRAINS?

    1. corrosion 2. damage to leveling compound

  • 14

    HOW DO WATER DISPLACING COMPOUNDS WORK?

    light duty “oil- like” having ability to displace water and wick faying surfaces, cracks “provides a wet non-drying thin protective coating of one mil 0.025m”. not long lasting protection

  • 15

    3 GENERAL CLASSIFICATIONS FOR SEALANT ARE?

    1. pliable sealants 2. drying sealants 3. curing sealants

  • 16

    WHAT IS "SHELF LIFE"?

    the length of time the material may be stored and used without its integrity being affected

  • 17

    WHAT ARE THE 3 MOST COMMON PROBLEMS WHEN MIXING/USING SEALANTS?

    1. when sealant does not cure or takes too long to cure 2. marbleized (streaky) sealant is caused by incomplete mixing. base material will not cure 3. surface must be clean for sealant adhesion. unwanted moisture from contaminated surface can cause corrosion.

  • 18

    WHY WOULD YOU USE A ROLLER TO APPLY SEALANT?

    used to spread sealant “uniformly” over the entire surface to desired thickness (typically 10 to 15 mils)

  • 19

    CORROSION PREVENTATIVE COMPOUNDS ARE PLACED IN 2 MAJOR CATEGORIES. WHAT ARE THEY?

    1. water displacing 2. non-water displacing

  • 20

    CORROSION INHIBITORS ARE NOT APPLIED IN WHAT AREAS OF THE AIRCRAFT?

    1. electrical connectors 2. control cables 3. pulleys 4. teflon bearings