PLA03 Module 3

Technician A says that sheet-molded compound (SMC) parts may be repaired using plastic welding.

Technician B says that sheet-molded compound (SMC) parts may require finish sanding on both sides of the repair.

Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

Witch of these is fiber-reinforced plastic?

• SMC

• TPO

• PP

• ABS

Technician A says that wicking is the process of drilling holes in the repair taper.

Technician B says that exposed fibers should be taped off before cleaning.

Who is right?

• A only

• Bonly

• Both A and B

• Neither A nor B

Technician A says that the front side of a two-sided repair requires sanding before applying an repair material.

Technician B says that the back-side of a two-sided repair requires sanding before applying an adhesive.

Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

A backing is applied:

• after repair material has been applied to the front side.

• inside the taper area.

• so it overlaps painted surfaces.

• so it overlaps the tapered area.

All of these are reasons carbon fiber is used EXCEPT:

• lightweight.

• low impact strength..

• appearance.

• can be formed into complex shapes.

The first step when repairing two-sided damage on an FRP part should be:

• tapering the back side.

• tapering the front side.

• cleaning with wax and grease remover.

• cleaning with soap and water.

Technician A says that SMC is smooth on both sides.

Technician B says SMC repairs may require finish sanding on both sides.

Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

Technician A says that aluminum tape is used as a permanent backing for FRP repairs.

Technician B says that a backing is needed on two-sided FRP repairs.

Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

Technician A says that some vehicle makers may recommend a pyramid patch.

Technician B says that to make a pyramid patch, layers of the repair product and fiber cloth are alternated.

Who is right?

• A only

• B only

• Both A and B

• Neither A nor B