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MTP > M6 DODI > Flashcards

M6 DODI Flashcards

1
Q

when the core bonded between two thin- face sheets, it provides a rigid, lightweight component.
◦

A

SANDWICH CONSTRUCTION

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2
Q
  • they are measured materials which cross rectangularly with warp threads and filling threads.
A

Fabrics

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3
Q

Rule of Thumb for selecting the rivet size is to choose a rivet -

A

DIAMETER IS. ATLEAST 3 TIMES THE THICKNESS OF THE THINNEST SHEET BEING JOINED.

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4
Q

diamond cone

A

Rockwell tester

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5
Q
  • Determined the glare Grade
A

THE NUMBER OF PREPEG LAYERS AND THEIR ORIENTATION

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6
Q

Blind rivet is same as solid rivets

A

yes

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7
Q

The ratio stress to strain within the proportional limit of a material in tension of compression

A

Modulus of Elasticity

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8
Q

After cooling the resin sets and hardens in a given form. Hardening is reversible

A

THERMOPLASTIC

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9
Q
  • wetting with acidic fluid or mordants
A

HYDROGEN EMBRITTLEMENT

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10
Q

These are used with drilled-shank hex-head bolts, clevis bolts, eye bolts or rivets and is designed to lock cotter pin or wirelocking.

A

Non-Self Locking Nuts

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11
Q
  • separation of plies occurs in multi laminate material
A

DELAMANATION

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12
Q

occurs between two materials that come into contact. The metals may be similar or dissimilar or in some cases one of the parts may be nonmetallic.

A

Crevice Corrosion

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13
Q

The thickness of the clad layers

A

3-5%

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14
Q
  • When screwed into a hole of the correct diameter they form their own thread. The Screw head may be slotted or cross recessed.
A

Self-Tapping Screw

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15
Q

After solution annealing process, have to be stored at

A

-18 degrees Celcius (stored up to 7 days)

  • 20 degrees Celcius (stored up to 20 days)
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16
Q

Basic Temper Designation “O”

A

Annealed

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17
Q

Basic Temper Designation “W”

A

Solution Annealed

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18
Q

7XXX (Wrought Alloys)

A

Zinc

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19
Q

RAISED CROSS on their head

A

5056 MAGNESIUM (B)

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20
Q
  • identified TWO RAISED DASHES in their heads and they are called icebox rivets.
A

2024 ALUMINIUM ALLOY

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21
Q
  • Ad rivets are identified by a small dimple in the centre of their head.
A

2117 ALUMINIUM ALLOY (AD)

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22
Q
  • Rigid body in which the constituent particles are arranged in repeating pattern.
A

CRYSTAL

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23
Q
  • applicable for steel components, which are hardened and have to be softened for mechanical processing
A

SOFT ANNEALING

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24
Q

made from small strands of molten silica glass and than spun together and woven into cloth.

A

Fiberglass

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25
Q

Customer Wire Number

A

9000-9999

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26
Q

DD-rivets are made of heat-treated aluminium alloy and they are so called

A

icebox rivets

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27
Q

Can only be welded under inert gas/vacuum

A

Titanium and Titanium alloys

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28
Q

will be connected by special contacts who provide a complete shielding through the connector and minimize the danger of wrong connection of the four wires.

A

Quadrax Cables

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29
Q

one of the most common methods today is to crimp these elements onto a wire by means of a special crimping tool. This procedure is also called

A

Cold weldings

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30
Q

The material is heated to a specified temperature and held there for a specified time.

A

Solution annealing

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31
Q

Wire commonly used in the A/C and is cheap

A

Copper

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32
Q

used to measure temperature

Two different metal alloy soldered or welded together in which electrical potential is created when the wiring contact is heated which is proportional to the temperature

A

thermocouple

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33
Q

The maximum stress that can be applied to a material without permanent deformation of the materials

A

YIELD STRENGTH

34
Q

the ratio of stress to strain within the proportional limit of a material in tension or compression

A

Modules of elasticity

35
Q

Not woven and made out of cut or non cut, multidirectional laying fiber.

A

Mats

36
Q

Wire numbers on the wires, the first four digit number designates

A

ATA-Chapter

37
Q

Bonding process of honeycomb

A

Corrugation & Expansion process

38
Q

Corrosion that is a combination of stress and corrosion

A

Stress corrosion

39
Q

Identified by its characteristics worm-like trace of corrosion products beneath the point film.

A

Filiform Corrosion

40
Q

Result in the rubbing movement between two heavily loaded surfaces and can eventually cause cracking
fatigue.

A

Fretting Corrosion

41
Q

Damage classification in composite

A

Allowable, Repairable, Non-Repairable

42
Q

Pins includes grooves onto which a collar is swaged

A

Lockbolts

43
Q

Surface wetting

A

The smaller the contact angle the more liquid spreads over the surface, and vice versa

44
Q

Solid rivet is formed by deformation of two shank

A

Upset head

45
Q

Thread has a greater lead that a fine pitch thread of the same major diameter

Screw which has a deeper thread cut into its surface will have a fewer threads

A

Coarse pitch

46
Q

Corrosion on aluminum and magnesium. White, powder deposit, Starts on the surface of a material and then extends vertically into the material

A

Ans. Pitting Corrosion

47
Q

A piece of hexagonal metal bar, drilled and tapped through its axial center-line

A

Ans. Stud box

48
Q

A piece of rod, threaded at each end with a plain portion in the middle

A

Ans. Stud

49
Q

A load that is uniformly distributed over a certain area and also the force per unit of area expressed is
PSI (pounds per square inch)

A

Ans. Unit stress or stress

50
Q

The maximum stress that can be applied to a material without permanent deformation

A

Ans. Yield strength

51
Q

When the stress on the area is a combination of tensile, compressive, shearing, twisting

A

Ans. Combined Stress

52
Q

What doesnt belong to Cast Aluminum Alloy

A

have a grain structure that is very coarse, thus the metal is not brittle

53
Q

Characterized by its YELLOW COLOR, lightweight and its excellent tensile strength.

A

Ans. Aramid

54
Q

Small surface damage use as scratch, nicks, or corrosion, cause a change pf stress distribution of the component, risk to crackling would be the result

A

Notch sensitivity

55
Q

If the stud is broken level with or below the surface

A

Ans. Ezi-out

56
Q

7X19 first number of stranded, second number of wire

A

Part number- Black color on the insulator

Wire number- Green

57
Q

How do you remove a broken stud with a sufficient stud protuding

A

Ans. Filed flat

58
Q

The stress at which a material in tension, compression, or shear will rupture.

A

Ultimate Strength

59
Q

Blind rivet reason fastening has been developed, which deform its back when a_________load applied at the front

A

Tension

60
Q

Ability of a material that enables it to withstand force over a period of time

A

Durability

61
Q

occurs when low alloyed steels are deformed chipless in the cold state.

A

Cold Shortness Sensitivity

62
Q

Rivet grip length

A

1/16

63
Q

Rivet diameter

A

1/32

64
Q

Damage classification?

A

Allowable ,Repairable ,Non repairable

65
Q

A deformity caused by extraneous forces, which are applied to the structure

A

Depression or Dent

66
Q

identify the diameter of MS20292881D5-8

A

5/32

67
Q

Identify the diameter of rivet BAC1527D5-12

A

5/32

68
Q

It can be the starting point for intergranular corrosion?

A

Pitting corrosion

69
Q

D-rivets are identified by raised dot in the centre of their head.

A

2017 Aluminium Alloy (D)

70
Q

Occurs due to the tendency of most metals to return to their natural.

A

Corrosion

71
Q

Reaction of two different types of molecules when reactive groups are brought together.

A

Polyaddition

72
Q

Hardening of the material at room temperature?

A

natural aging

73
Q

Low-cost reinforcing material?

A

Fiberglass

74
Q

Sheets made of alloys are with a thin layer of pure aluminium on both sides as a means of corrosion protection

A

CLAD

75
Q

a flush rivet with a very small flush head and the head of the rivet is slightly arced and has a special head mark.

A

Shear head rivet

76
Q

Since heat is used as curing agent, these resins may tend to run off of any vertical or near vertical surface before they have a chance to cure.
“They run like water.”

A

Thixotropic Agents

77
Q

Which material is cladded with pure aluminum for corrosion resistance?

A

Aluminium alloy

78
Q

these inserts are manufactures from round wire which is converted into diamond shape

A

Heli-coil Inerts

79
Q

Finer version of the whitworth thread form and the smaller thread provides a finer form of adjustment and greater resistance to vibration in all fastening devices

A

British Standard Fine (BSF)

80
Q

It deforms its back when a tension load is applied at the front?

A

Blind rivet

MTP (14 decks)

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