Composite Review Flashcards
Blue Diamond safety label?
Health Hazard
Red Diamond safety label?
Flammability
E-glass “E” is for what?
Electrical
S-glass “S” is for what?
Strong/Structural
C-glass “C” is for what?
Ceramic
L-glass “L” is for what?
Lead
Pre-preg cloth is cured by what two things?
Heat and pressure
Honeycomb material is made of what?
Metal, plastic, or paper.
What is the primary job of resin?
Carry the load from one fiber to the next.
The amount of time a catalyzed resin will remain in a workable state is called?
Pot life
Fabric will be strongest in what direction?
Warp direction
The diagonal line across a piece of weave is what?
Bias
The strength and stiffness of a composite lay-up depends on?
The orientation of the of the plies to the load direction.
What is the selvage edge?
A manufacturered edge to prevent edges from raveling.
What is Uni-directional and Bi-directional weaves?
Uni: one direction. Bi: two directions.
What is pre-preg?
Prepregnated cloth with a resin at the factory.
Threads perpendicular to the warp threads is called?
Woof or Weft.
Threads 45° to the warp thread is called?
Bias.
Orientation of the fibers of cloth for a composite repair is called?
Warp clock.
The preferred way to make repairs on composite structures is?
Remove the damage and lay in plies.
What is the maximum diameter that can be repaired by potted compound?
1 inch.
How are superficial scars, scratches, etc. repaired on fiberglass laminates?
Adding layers of resin.
Conventional rivets on composite materials can result in what?
Delamination.
When drilling transparent plastics, how is it performed?
High speed, light pressure while using a modified drill bit.
