Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

B1 Modules > Maintenance Practices M7.14 Sheet Metal > Flashcards

Maintenance Practices M7.14 Sheet Metal Flashcards

1
Q

How do you know which direction the grain is running on sheet metal

A

Same direction as the writing is stamped

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

When bending metal what must be remembered

A

Bend 90° to the grain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What stresses is sheet metal subject to when being bent

A

Tensile and compression forces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where does the neutral axis run on a metal that is being bent

A

The centre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How is sheet metal stored

A

In a frame with appropriate paperwork

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is important to remember about the Neutral line

A

It is in neither compression or tension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is important to remember about K factor

A

For every 90° bend K factor = 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the mood point

A

Where the mold lines intersect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is subtracted from EACH flat

A

Set back

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are bends inspected for after bending

A

Cracks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the bend sight line

A

1 bend radius from the bend tangent line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When bending ally what must you remember

A

Might have to go slightly over due to spring back

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is max juggle

A

2-3 thickness maximum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a room temp cure

A

18-25°c 48 hours to 7 days

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When increasing bonding temp to 50-70°c how quick can cure time be

A

2-4 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is hot bonding controlled with

A

Thermocouples

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Does it take a longer time or shorter time for a cure to carry out in warm temp

A

Shorter time when warmer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is a disadvantage of using a heat lamp

A

Can cause high surface temps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What are autoclaves

A

Big ovens giving ideal bonding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is a disadvantage of heat blankets

A

Can’t be used on complicated shapes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the two wipe method

A

A solvent wipe and then a dry wipe before bonding

22
Q

What is used for detecting sub surface flaws

A

Ultrasound

23
Q

How are chains identified

A

Pitch, width between plates and roller diameter

24
Q

How is a change in direction in chains achieved

A

A bi planer block

25
Q

What are chain standards governed by

A

BS228

26
Q

What should be done if a chain is disassembled

A

It should be proof loaded once reassembled

27
Q

When should a chain be replaced with relation to wear

A

If wear is over 2%

28
Q

When not being used how are chains stored

A

In grease proof paper

29
Q

How would you know if push pull tubes are in safety

A

Witness hole

30
Q

What is the purpose of backlash

A

Prevents gears from jamming and room for lubrication

31
Q

What are the 2 different clearance fits

A

Running and free running

32
Q

What is the standard of ISO system limits and fits

A

BS4500

33
Q

If a repair is done to a control surface what must be done afterwards

A

It will need rebalancing

34
Q

What is the definition of sealant

A

Confines liquids and gasses in given areas to prevent them from entering other areas

35
Q

What are injection seals for

A

Holes

36
Q

What is a seal plane

A

A structural boundary where fuel cannot pass

37
Q

How are fuel tanks sealed

A

3 phase system

38
Q

When scraping sealant and choosing a scraper what must be remembered

A

Scraper should not be any harder than 2024 T3

39
Q

What altitude do lightning strikes normally occur

A

Between 5-15k feet during take off and decent

40
Q

How much can a single bolt of lightning be

A

1 million volts

41
Q

What are 2 types of lightning strike damage

A

Direct and indirect

42
Q

What is HIRF

A

High Frequency Radiated Field

43
Q

What type of aircraft are more likely to get hot with lightning strikes

A

Short haul

44
Q

If an overweight landing occurs what must be done

A

An overweight landing

45
Q

How is severe turbulence identified

A

Turbulence which causes large abrupt changes in altitude and attitude

46
Q

What’s the alternative way of cutting a cable

A

Anvil, hammer and chisel

47
Q

What must not be used to cut a cable

A

Oxy acetalyne torch

48
Q

No more than what for a suage tool

A

4 role sequences

49
Q

How to make sure a cable tension tester is operating correctly

A

Hold for 5 secs and no slips

50
Q

Which side of the turnbuckle had a left hand thread

A

The one with a groove

51
Q

How do you make sure a turnbuckle is in safety

A

Witness mark or hole

B1 Modules (19 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions