Deck 11: Repairing Sheet Metal

Question 1

Aluminum dust can be removed from sanding discs with low pressure air.

Answer 1

False

Question 2

The term MOST-Likely used to describe the amount of force that a piece of metal can resist without tearing or breaking is:

A) tensile strength
B) gouge
C) kink
D) yield point

Answer 2

D

Question 3

Indirect damage is caused by the shock of collision forces travelling through the body.It represents, on average, 40 percent of the overall damage.

Answer 3

False

Question 4

Which of the following is LEAST-Likely a type of load?

A) Tension
B) Compression
C) Shave
D) Peel

Question 5

Deformation is the ability of metal to be bent or formed into different shapes.

Question 6

All of the following represent a condition that occurs when metal is damaged by impact EXCEPT:

A) direct damage
B) plasticity
C) indirect damage
D) work hardening

Question 7

The hammer-on-dolly method is used to raise low spots and lower high spots simultaneously.

Question 8

Buckles caused by impact create additional work hardening in an automotive sheet metal panel, but bent metal is not necessarily buckled metal.

Question 9

A high spot or sheet metal bump is an area that sticks up higher than the surrounding surface.

Question 10

Any metal that is bent to form an angle is considered a box section.

Question 11

____ is the ability of metal to stretch and return to its original shape.

A) Elastic deformation
B) Tensile strength
C) Spring back
D) Deformation

Question 12

Spoons can be used to pry out dents and certain kinds can be struck with a hammer to drive out dents.

Question 13

The oxyacetylene torch with a #1 or # 2 tip should not be used to heat shrink sheet metal panels made of steel.

Question 14

____ occurs when plastic deformation has caused the metal to become very hard in the bent area.

A) Direct damage
B) Indirect damage
C) Work hardening
D) Deformation

Question 15

High-strength steel (HSS) is stronger than low-carbon or mild steel because of heat treatment.

Question 16

____ refers to the new, undesired bent shape the metal takes after an impact or a collision.

A) Loading
B) Tensile strength
C) Spring back
D) Deformation

Question 17

Glue-on tab dent pulling disturbs the corrosion protection on the backside of a panel.

Question 18

While having a discussion, Technician A says that sheet metal lowering means to work a dent outward or away from the body.Technician B says that sheet metal lowering means to work a high spot or bump down or into the body.Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 19

Low-carbon steel, or mild steel (MS), has a low level of carbon and is relatively soft and easy to work.

Question 20

While having a discussion about glue-on tab dent pulling, Technician A says you may use rubbing alcohol to remove the glue tab.Technician B says that paint reducer should be used.Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 21

Technician A says that glue on tab dent pulling requires some paint removal.Technician B say that any glue left after tab removal can be removed with rubbing compound.Who is right?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 22

A ____ can be used to remove dents in steel panels from the front without drilling holes.

A) dolly
B) spot weld dent puller
C) gauge
D) buckle

Question 23

A ____ is a heavy steel block with various shapes on each side for straightening sheet metal.In the rough-out phase, a heavy steel dolly block is sometimes used as an impact tool.

A) body hammer
B) dolly
C) gauge
D) gouge

Question 24

While having a discussion, Technician A says that you should avoid making holes in panels while straightening.Technician B says that holes weaken the panel and make it more prone to rusting.Who is correct?

A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question 25

_________________________ is the tendency for metal to return to its original shape after deformation.

Question 26

_________________________ is measured as the minimum force per unit of area that causes the material to begin to permanently change its shape.

Question 27

The _________________________ is designed to strike sheet metal and rebound off its surface as a means of straightening minor bumps and dents.

Question 28

_________________________ is caused by the shock of collision forces traveling through the body and inertial forces acting on the rest of the unibody.

Question 29

Which of the following is LEAST LIKELY to be used when heat shrinking aluminum.

A) Heat inductor
B) Resistance welder
C) Infrared thermometer
D) Torch

Question 30

____ involves using a hammer and dolly to create pleats, or kinks, in the stretched area to shrink its surface area.

A) Kinking
B) Work hardening
C) Spooning
D) Grinding

Question 31

____ is a method used to exert a smoothing force to a small area on a damaged panel.

A) Spring-back
B) Hammer-on-dolly
C) Deformation
D) Tensile strength

Question 32

Which of the following statements is MOST-Likely false?

A) Aluminum's natural resistance to rusting and corrosion is its primary advantage.
B) Aluminum is much easier to shape than steel.
C) Aluminum panels are usually thicker than today's HSS panels.
D) When damaged, aluminum feels harder or stiffer to the touch because of work hardening.

Question 33

Which of the following statements is LEAST-Likely true?

A) Resistance spot weld dent pullers are an inferior method of straightening damaged sheet metal.
B) The reusable tip spot weld dent puller has a permanent weld tip and slide hammer attachment mounted on the spot welder
C) The advantage of the disposable pin spot welder is that several pull pins can be welded to the dent.
D) There are two basic types of spot weld dent pullers: reusable tip and disposable tip types.

Question 34

_________________________ is measured as the maximum force per unit of area that causes a complete fracture or break in the material.

Question 35

Briefly discuss the meaning of the following rule: "First damage in, last damage out."

Question 36

A(n) ____ is caused by a focused impact that forces a sharp dent or crease into a panel.

A) spring-back
B) kink
C) gouge
D) oil can

Question 37

All of the following are components of the modern spot-weld dent puller EXCEPT:

A) the ground clamp
B) replaceable tip
C) the gouge
D) the slide hammer

Question 38

____ is needed to remove strain or tension on a damaged, stretched sheet metal area.

A) Shrinking metal
B) Yield strength
C) Tensile strength
D) Work hardening

Question 39

The term ____ is used to describe an area of a panel that is stretched very slightly.

A) buckle
B) flame cone
C) spring-back
D) oil can

Question 40

____ has been forced thinner in thickness and larger in surface area by impact.

A) Shrinking metal
B) Stretched metal
C) Sheet metal
D) Work hardening

Question 41

How can you control the effects of hammer-on-dolly?

Question 42

What are the advantages of the reusable tip dent puller?

Question 43

How can you control hammer-off-dolly straightening?