E- materials and processes

Question 1

what does the magnetic particle inspection basic process consist of?

Answer 1

The basic process consist of magnetizing a part, then applying, ferromagnetic particles to the surface area to be inspected. If a discontinuity is present, the particles will form a recognizable pattern on the surface.

Question 2

what nondestructive testing method could be used for detecting surface cracks, and aluminum fittings?

Answer 2

Dive penetrate, eddy current, ultrasonic testing, and visual inspection

Question 3

what occurs during the preparation stages when penetrate inspection liquid is applied to and then removed from a part that is cracked

Answer 3

The penetrating liquid enters the crack and remains there in order to make the crack visible after developer is applied

Question 4

what is the procedure for performing penetrate inspection?

Answer 4

Clean the surface, apply penetrate remove the penetrate dry part applied developer, inspect and interpret results

Question 5

how many AN standard steel bolts be identified?

Answer 5

By the code markings on the bolt head

Question 6

what do the markings on the heads of solid shank rivets indicate?

Answer 6

The material of which they are made and their strength

Question 7

how can the recommended torque for a bowl or not be determined when torque values are not called out in the maintenance procedures?

Answer 7

From the information contained in the standard torque table

Question 8

what does the grip length of a bolt correspond to

Answer 8

The thickness of the material being fastened with the bolt

Question 9

well may be accomplished to prevent heat, treated aluminum aloe rivets from becoming hard after the quenching sequence

Answer 9

The rivets may be stored in a refrigerator, a temperature lower than 32°F. They will remain soft for several days.

Question 10

We may self locking nuts, not be used

Answer 10

Add joints, which subject, either the nut or bolt to rotation

Question 11

what is the difference between a general purpose, bolt and a close tolerance bolt?

Answer 11

Close tolerance bolts are more accurately than general purpose bolts

Question 12

what type of cable is commonly used in primary control systems?

Answer 12

extra flexible 7x9 stainless steel cable

Question 13

How was work hardening obtained?

Answer 13

By cold, working metal

Question 14

what width would a welding be have and what should be the death of penetration in a butt weld?

Answer 14

Be with should be 3 to 5 times that thickness of the base metal and 100% penetration for a butt well

Question 15

what are the undesirable characteristics of a Cold weld

Answer 15

cold weld has improper penetration with rough and irregular cold lapse, not feathered into the basement

Question 16

what are the penetration requirements for a fillet weld?

Answer 16

A fillet weld should be 25 to 50% of the thickness of the base metal

Question 17

what precision measuring instruments are used to measure outside dimensions

Answer 17

Outside micrometer calipers and vernier calipers

Question 18

why should a micrometer be periodically calibrated?

Answer 18

If it is dropped, it’s accuracy may be affected

Question 19

what why is alloy steel that is responsive to heat treatment usually less suitable for welding

Answer 19

Because of its Tennessee to become brittle and lose its ductility in the welded area

Question 20

what is the main difference between thermal plastic and thermosetting resin?

Answer 20

Thermal plastic resin can be softened by heat and become hard again when cool down. thermosetting resin do not soften when heated, and will char and burn rather than melt.

Question 21

name one material commonly used as the reinforcing component in the structural composite laminates

Answer 21

aramid, fiberglass, graphite, and fiber

Question 22

name, one substance commonly used as the matrix material and structural composite laminates

Answer 22

polyester, resin, or epoxy resin

Question 23

name one advantage of using pre-impregnated materials in the construction or repair of composite components

Answer 23

The reinforcing fibers are completely and evenly permeated with matrix

Question 24

Which NDT method can be performed without removing the surface coating, such as primer paint in anodizing films, and is effective in detecting surface and sub surface corrosion

Answer 24

Eddie current inspection method

Question 25

Which steel alloy is noted for its toughness, and his most commonly used for aircraft tubular structure, such as frame members, engine mounts and landing gear parts, and other structural parts

Answer 25

chrome-molybdenum steel

Question 26

which case harden process is accomplished on steel alloys after heat, treating to produce wear resistance surface on engine parts, such as crankshafts

Answer 26

nitriding

Question 27

what portable, hardness tester is commonly used for testing, aluminum, alloys, copper, brass, or other relatively soft materials

Answer 27

barcol tester

Question 28

In what class of threaded fit are aircraft bolts, commonly manufactured

Answer 28

class three medium fit

Question 29

name at least three properties of metals

Answer 29

hardness, toughness, and ductility

Question 30

what is the term use that applies to the group of metals that has iron as its principal constituent

Answer 30

ferrous

Question 31

In aluminum alloy 2XXX through 8XXX series as in 2024 T3 what do the first digits indicate

Answer 31

primary alloying element

Question 32

Been two types of hardness testers, used on steel and other alloys such as aluminum

Answer 32

Rockwell, brinnell, barcol

Question 33

what is the term used that applied to a combination of material such as fiber, whisker or particle, surrounded and held in place by resin, informing a structure

Answer 33

Composite structure

Question 34

what is another commonly known name for aramid material?

Answer 34

Composite structure

Question 35

what is another commonly known name for an aramid material?

Answer 35

kevlar

Question 36

name four advantages of composites

Answer 36

High strength to weight ratio, fiber to fiber transfer of stress allowed by chemical bonding ,3.5 to 5 times of steel or aluminum longer than metals, Professor higher corrosion resistance

Question 37

what are the two general types of self locking nuts?

Answer 37

all metal and fiber lock

Question 38

what are two basic types of washers?

Answer 38

plain, lock, and special

Question 39

what hardware is used as a threaded bushing to repair threads

Answer 39

Helicoils

Question 40

when we’re referring to a standard torque chart, how can a 1/4 28 size bolt be defined?

Answer 40

it is 1/4 inch diameter bolt with a thread count of 28 threads per inch

Question 41

A solid rivets diameter is measured in what fractional increments

Answer 41

1/32 inch

Question 42

A solid rivet length is measured in what fractional increment

Answer 42

1/16th of an inch

Question 43

The diameter of a standard steel bolt as in the part number AN 3–5 is measured in what fractional increment

Answer 43

1/16 of an inch

Question 44

The length of a in standard steel bolt as in the part number AN 3–5 is measured in what fractional increment

Answer 44

1/8 of an inch