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Test your basic knowledge |
Modern Material Science And Engineering 3
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 37 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Level of chemical resistance - but weak in compression
polyurethane
hybrid composite
fiber pull out
aspect ratio of fibers
2. Hardening or toughening of a polymer material through a cross linking of polymer chains
creel
prepregging
hardener
curing
3. Ratio of length to the diameter of the fiber used in a fiber inforced composite
role of fibers
hardener
aspect ratio of fibers
matrix
4. Ceramics - high performance polymers - metals - or carbon fibers
fiber fraction exceeds
wet- filament winding
isotropic laminar composite
what are reinforced fibers made of...
5. Process in which bits of chopped up fibers are mixed or blown into the matrix material along with any curing agents - accelerators - diluents - fillers - or pigmnets - in order to form a simple choped fiber composite
osseonintegration
resin formulation
wet- filament winding
curing
6. Material formed by blending two materials in distinct phases causing a new material with different properties from either parent
aspect ratio of fibers
coarse aggreagates
metal matrix composites
composite
7. Process in which hydroxy apatite becomes part of the growing bone matrix
orientation of fibers
vinyl ester resins
composite
osseonintegration
8. Resins used as matrixes in composite materials that are more expensive than polyester resin but provide improved mechanical properties and exceptional environmental resistance
composite
osseonintegration
fiber pull out
epoxy resins
9. Hard randomly oriented particles in a particulate composite that help the composite withstand compressive loads
resin transfer molding
vinyl ester resins
fine aggregates
aggregate
10. Matrix material that have many voids and poor mehcanical properties but do offer a level of fire resistance
phenolic resins
matrix
pultrision
role of fibers
11. Composite in which the one material forms the outer matrix and transfers any loads applied to the stronger more brittle materials
polyimide resins
resin formulation
Fiber- reinforced composites
particulate compostie
12. Process of converting mats or weaves into composites through using a mold in which the mat is placed and jnjected with resin at a high enough pressure to permeate and surround the woven mat
creel
resin transfer molding
polyurethane
osseonintegration
13. Polymeric matrix materials that are extremely expensive and used only in high end applications due to their ability to maintain their properties at temperatures above 250
resin transfer molding
isotropic laminar composite
polyimide resins
prepreg
14. Process of creating prepregs by dipping fibers into a resin bath and heating them sligtly to ensure that the coatin sticks
what are reinforced fibers made of...
prepregging
hardener
ceramic matrix composites
15. Device capable of continuously pulling filaments from multiple different rovings without stopping the process
resin transfer molding
pultrision
polyurethane
creel
16. Aggregage particles with a diamter greater than 0.25 inches
coarse aggreagates
aggregate
composite
fiber fraction exceeds
17. Composites that use a metal as the matrix material in place of more common polymer matrices
pultrision
metal matrix composites
what are reinforced fibers made of...
prepreg
18. Condition in which the fibers in a matrix offer essentially no reinforcing benefit to the matrix when a load is applied in the transverse direction causing both to experience essentially the same strain
fine aggregates
isostress condition
fiber fraction exceeds
wet- filament winding
19. Quality of bonding between the fiber and the matrix in a composite material
fine aggregates
roving
wet out
polyester resin
20. Uniaxial (along the load) - randomly oriented chopped fibers - complex two- dimensional or three- dimensional woven mats
polyurethane
resin formulation
vinyl ester resins
orientation of fibers
21. Withstand significant tensile loads in the longitudinal direction
orientation of fibers
coarse aggreagates
isostrain condition
role of fibers
22. Process often used to create uniaxial fiber inforced composites
Fiber- reinforced composites
composite
pultrision
matrix
23. 80% there is not enough matrix material to completely surround and bond with the fiber and transfer load effectively. - typical fiber fraction is about 30-50%
fine aggregates
prepreg
pultrision
fiber fraction exceeds
24. Composite materials produced with at least one phase that is a composite itself
hybrid composite
creel
phenolic resins
matrix
25. Fiber bundle already impregnated with matrix material which can be converted into a composite without any additional processing
resin formulation
fine aggregates
Fiber- reinforced composites
prepreg
26. Condition where the quality of bonding b/t the fiber and matrix is sufficient that both elongate at the same rate and experience the same strain
role of fibers
isostrain condition
composite
hybrid composite
27. Premature failure in a composite caused by inadquate bonding b/t the fiber and matrix
fiber pull out
ceramic matrix composites
wet- filament winding
phenolic resins
28. Most economical choice for matrix material in composite in situations where the mechanic properties of the matrix are not crucial to the application
pultrision
hardener
wet out
polyester resin
29. Addition of ceramic fibes to a matrix of different ceramic material to significantly increase the fracture toughness of the composite
ceramic matrix composites
coarse aggreagates
creel
osseonintegration
30. Polymeric matrix material that combines the economic advantages of polyester resins and the exceptional properties of epoxy resins
role of fibers
hybrid composite
polyurethane
vinyl ester resins
31. Aggregate particles with a diameter less than 0.25 inches
fine aggregates
prepregging
wet out
fiber fraction exceeds
32. Larger number of single fiber strands wound in parallel
roving
isotropic laminar composite
fine aggregates
creel
33. Substance added to epoxy resin to cause it to cross link the hardener becomes incorporated in the resulting polymer
fine aggregates
hardener
resin formulation
resin transfer molding
34. Composites that are made by alternating the layering of different materials bonded to each other
wet- filament winding
polyurethane
orientation of fibers
isotropic laminar composite
35. Composite that contain large numbers of coarse particles such as cement and gravel found in concrete.
composite
osseonintegration
particulate compostie
aspect ratio of fibers
36. Material in a composite that protects - orients - and transfers load to the reinforcing material
prepreg
matrix
resin transfer molding
epoxy resins
37. Process of creating more complicated shapes of fiber- inforced composites into desired shape
what are reinforced fibers made of...
wet- filament winding
roving
wet out