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tubular structure test 1 100%
  • Zachary Halycz

  • 問題数 59 • 11/22/2023

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    問題一覧

  • 1

    Who can weld a/c structure?

    certified personal, controlled by regulation.

  • 2

    Steel tubing can be repaired at any location? True/false

    yes, True

  • 3

    What type of doubler is fabricated to fit over a dent at a cluster?

    finger doubler

  • 4

    When repairing structural tubing, what method is recommended? (inner sleeve/or outer)

    inner sleeve method

  • 5

    What is allowable gap between original and replacement tubes for welding?

    1/8” gap

  • 6

    Maximum allowable dent / punctures that can be repaired with a welded patch is?

    1. not larger than the tube diameter 2. no more than 1/4” of tube circumference max

  • 7

    Tubing should be cut at what angle?

    30 degree

  • 8

    What are some examples of aircraft parts that are not repairable by welding unless instructed by the original manufacturer?

    1. Forging 2. Castings 3. machined part 4. shot peen parts 5. brace wires and cables 6. brazed and soldered parts 7. heat treated parts

  • 9

    A partial replacement of a tube with an outer sleeve requires more welding than an inner sleeve repair? True/false

    True

  • 10

    When the majority of the tubular structure is undamaged it can be used as a reference to maintain alignment? True/false

    True

  • 11

    Other methods for checking alignment are?

    1. certified jigs 2. manufacturers drawings 3. measure between points of corresponding members that have not been “distorted”

  • 12

    Is it critical to find out from the manufacturer if they carried out a post weld heat treat? True/false

    True

  • 13

    What welding process is most common on tubular structure repairs?

    tig or (GTAW)

  • 14

    3 steps required before welding are?

    1. clean tubular structure 2. proper jig 3. remove defective welds in area

  • 15

    What is the most widely used steel used for structural tubing assemblies?

    Chromoly 4130 “high strength, high stress” areas

  • 16

    What are the common NDT methods used for inspecting welds?What are the common NDT methods used for inspecting welds?

    1. LPI 2. magnetic particle inspection 3. radiography

  • 17

    Can welds be filed or ground down? true/false

    false, filling removes strength

  • 18

    Can bent tubes be cold straightened? True/false

    yes, true. *ensure they don’t crack, not changed in cross section.

  • 19

    Methods used in cold straightening are?

    1. bullet 2. forming blocks

  • 20

    All damaged tubing must be checked for alignment and symmetry before and after welding? True/false

    True, before and after

  • 21

    Types of paint removal methods prior to welding are?

    1. mechanical 2. scotch brite 3. wire brush “steel” 4. sanding 5. soda blasting

  • 22

    Stop drill cracks to what minimum size?

    #40

  • 23

    When splicing tubes, repair parts should be what material and thickness?

    same material, same thickness

  • 24

    Weld repairs are considered a specialized process controlled by regulation? True/false

    True

  • 25

    Engine mount repairs are exposed to what?

    “vibration”, high levels of cyclic vibration

  • 26

    Tubular repair splicing involves using repair pieces that fit Inside or outside the original tube diameter

    true

  • 27

    fish mouth cuts can be used as an alternative to a split sleeve repair?

    true

  • 28

    licensed AMEs are certified to weld?

    No

  • 29

    Licensed AMEs can fabricate and certify tubular repair parts?

    yes

  • 30

    steel tubing can be repaired

    yes, at any location. unless otherwise noted

  • 31

    what is a doubler fabricated to fit over a cluster called?

    finger doubler

  • 32

    a finger doubler can be formed with heat but is easier to form if cool

    false, heat is easier

  • 33

    forgings, castings, machined and shot peened parts can be repaired by welding without approval from original manufacture? True or False

    false. must have manufactures approval

  • 34

    splicing using larger diameter replacement tubes requires the ___ amount of cutting & welding. this method ____ be used near clusters or areas requiring original diameter tube for bracket mounting.

    Least, Cannot

  • 35

    engine mount repairs may be repaired using previous methods, the preferred method is “____” with ____ diameter tube

    splicing, large

  • 36

    are stub axles repairable?

    no

  • 37

    when damage is severe enough to have distorted the entire assembly. it will be considered ?

    un-repairable

  • 38

    proper machine setting

    DC straight polarity

  • 39

    prior to installing a doubler or sleeve, all tubes should?

    1. have dents removed by clamping between suitably shaped blocks or using a bullet drawn through the tubes 2. straightened using clamps, supports and blocks

  • 40

    dents not deeper than ___ “ of tube diameter not involving more than 1/4 of tube circumference or not ____ than tube diameter may be cold straightened

    1/10” , Longer

  • 41

    if a suitable jig is not available, it is possible to use an un-damaged assembly such as an _____ as a pattern to fabricate a jig.

    engine mount, *method not recommended for a one off repair due to cost”

  • 42

    prior to removing damage, a thorough inspection is carried out to ensure?

    a accurate assessment of amount of material being removed

  • 43

    before inspecting damaged part, what must be done

    remove paint and other coatings

  • 44

    once extent of damage has been determined then processed to make a cut in the middle member that is going to be spliced. what does this do?

    removes load from members that will be cold straightened

  • 45

    Before removing any damaged tubes, perform ___ straightening and check _____?

    cold, alignment

  • 46

    before fabricating any repair parts for tubular structure, you must be able to positively identify the original material. how can you identify original material?

    1. SRM 2. manufacturers specific approval 3. metallurgical lab analysis

  • 47

    acceptable weld consists of?

    1. smooth 2. uniform 3. good penetration

  • 48

    rosette welds controls relative motion of repair parts for welding, generally what size is a rosette weld?

    1/4” of tube diameter

  • 49

    only tubular landing gear can be repaired, not “modern” oleo type.

    true

  • 50

    spark tests cannot be used to identify a metal?

    they can be used to identify a metal

  • 51

    additional ways to remove paint from A/C structure ?

    scotch brite, steel wire brush

  • 52

    is it nessesary to look past the initial damage when inspecting?

    true

  • 53

    alignment and symmetry checked before or after welding?

    after welding, but both should be done

  • 54

    cold straightening is used to minimize material removal?

    true

  • 55

    engine mounts and undercarriage are considered critical assemblies?

    true

  • 56

    good way to remove corrosion from tubular structure?

    soda blasting

  • 57

    is it critical to determine from the manufacture if a post weld heat treat was carried out?

    true, it is critical

  • 58

    when repairing tubing by splicing, which method is recommended?

    inner sleeve

  • 59

    tubular repair splicing involves using repair pieces that fit “inside” or “outside” original tube diameter?

    true