Week 1-Materials Flashcards
What are Fiber Reinforced Plastics?
Carbon Fibers in plastic
What forces does fiber reinforced plastics enforce?
Tension, Sheer, Compression
What is Polymer Composite?
Single Layer of Resin and Fiber
What is a disadvantage of polymer composite?
May not have continuous fibers
What is Laminar Composite?
Layers of Resin and many other materials such as fiber
What is critical for laminar composite?
Fiber orientation, it increases strength in the direction the fibers are oriented.
What materials can be used for Laminar Composite?
Kevlar, hybrid matrix, nylon, nyglass, fiberglass, and dacron
What is Kevlar?
Material used for bullet proof vests, impact resistant, heavy
What is nyglass?
A hybrid between nylon and fiberglass
What makes laminar composite better than a polymer composite?
Has continuous fibers throughout the device.
When determining the layup what is important to know?
The weight of the patient
What are resins made of?
A promoter and an activator/hardener
Why should you use different fibers in one device?
Can adjust the fiber orientation
Carbon is strong in compression and tensile forces, not in sheer and torque
What are the different aspects of carbon fiber?
Strong per-weight Highly moldable to complex forms Weak when purely planar Potentially expensive raw materials Potentially toxic byproducts of production
What makes carbon strong?
Strength is achieved on a per-fiber basis with each fiber made up typically of one plane of carbon in a crystaline structure along the fiber’s length.
