Last Weeks

Question 1

_____-________ are materials where the matrix material is already saturated into the material

Answer 1

Pre-pregs

Question 2

What are the advantages of pre-impregnated materials

Answer 2

CONVENIENCE- Right mix of matrix materials
COMPLETE INCAPSULATION
SPEED
TECHNICIAN WILL NOT DISTORT WEAVE PATTERN

Question 3

What are the disadvantages of Pre-pregs?

Answer 3

Storage/Timed life/Freezer time

Cost

Question 4

Made of microballoons and also known as fillers, these agents increase viscosity, pot life, and volume

Answer 4

Thixotropic agents

Question 5

What is a sandwich construction made of?

Answer 5

Central Material contained between two Face Sheets

Question 6

The ______ _________ can come in honeycomb, foam, or wood styles

Answer 6

Core Material

Question 7

The _________ ___________ of honeycomb is the direction in which the honeycomb can be stretched without the honeycomb being pulled apart

Answer 7

Ribbon Direction

Question 8

Two or more materials laminated together is called

Answer 8

Hybrid Laminate

Question 9

_________ _____________ is the most common way that pressure is applied to a composite repair/ applies 14.7 psi

Answer 9

Vacuum Bagging

Question 10

____________ ____________ uses a continuous thread of reinforcing fiber

Answer 10

Filament Winding

Question 11

_______ ____________ used no heat and no pressure, simplest method

Answer 11

Wet Layup

Question 12

____________ ______________ allows for safe build up of static, and safe discharge of lightning (uses a layer of metal mesh)

Answer 12

Electrical Bonding

Question 13

How do you speed up the curing process of a composite?

Answer 13

Apply heat

Question 14

What are the different types of damage?

Answer 14

Cosmetic Defects
Impact Damage
Delamination Damage
Crack Damage
Hole Damage

Question 15

Outer Surface skin that does not involve damage of structural reinforcing fibers

Answer 15

Cosmetic Defects

Question 16

________ _________ is when the composite is struck by a foreign object

Answer 16

Impact damage

Question 17

Separation of layers of materials in a laminate, can be caused by manufacturing defects. This is called ______________

Answer 17

Delamination

Question 18

This damage may be able to be detected visually, or may require NDT

Answer 18

Crack Damage

Question 19

______ ___________ is mainly caused by maintenance, and can also be caused by lightning strikes

Answer 19

Hole Damage

Question 20

Leading edges are susceptible to what kind of damage

Answer 20

Impact Damage

Question 21

This type of inspection can be done with a magnifying glass, a light source, delamination can typically be detected by the use of a bright light

Answer 21

Visual Inspection

Question 22

What is a simple inspection you can do as an AME?

Answer 22

Coin Tap Test

Question 23

Which inspection can clearly detect delamination?

Answer 23

Ultrasound

Question 24

______________ locates flaws by temperature variations at the surface of a damaged part

Answer 24

Thermography

Question 25

Before looking to repair damage, what are the 7 questions you should ask yourself?

Answer 25

1) Is this cosmetic/Negligible Damage
2) Is this a major repair/major mod (needs to have Approved/Specialized data)
Found in CAR 571 Appendix A
3) Is this Specialized work (Must be done in an AMO)
4) Is the AMO that I am working for appropriately rated for this type of work?
5) Will I need a flight permit to get the aircraft to a place where this repair can be carried out?
6) Will I have to file a SDR with TC?
7) When Repaired, details are entered in the technical records for the aircraft

Question 26

What are the different Core Materials?

Answer 26

Balsa, Honeycomb, Foam

Question 27

When creating a composite, what kind of power supply should you use?

Answer 27

Uninterrupted power supply

Question 28

______________ ____________ ___________ has holes to bleed Resin

Answer 28

Perforated Parting Film

Question 29

________ _________ ,made of metal, apply even pressure on repair, and spreads heat evenly from heating blanket

Answer 29

Cowl Plate

Question 30

_____________ ____________ ___________ is a mess free way of forming composites

Answer 30

Vacuum infusion Bagging

Question 31

______ _______ ______ ____________ are used for effective heating

Answer 31

Dual Zone Hot Bonders