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WorksheetsMC Repaso 1
Total questions: 20
Worksheet time: 10mins
The image above shows a fiber fabrication process.
Which fiber type is this process referring to?
Carbon fiber
Glass fiber
Boron fiber
Aramid fiber
Sandwich composites' core typically fall into three categories, which of the following is not:
Laminate
Polymeric foam
Wood
Honeycomb
Aligned fibrous composites are inherently
Isotropic
Anisotropic
Type of weave shown in the image
Unidirectional
Satin weave
Twill weave
Plain weave
Consider the elastic behavior of a continuous and oriented fibrous composite that is loaded in the direction of fiber alignment, were deformation of both matrix and fibers is the same. That means:
Isostrain situation
Isostress situation
What is this formula used for?
Composite longitudinal load
Critical fiber length
Critical fiber load
It is composed of several two-dimensional sheets or panels that have a preferred high-strength direction.
Core
Honeycomb
Laminate
Sandwich composite
What is this equation used for?
Composite modulus of elasticity in longitudinal direction
Fiber modulus of elasticity in longitudinal direction
Composite modulus of elasticity in transversal direction
Fiber modulus of elasticity in transversal direction
What is this equation used for?
Composite modulus of elasticity in longitudinal direction
Fiber modulus of elasticity in longitudinal direction
Composite modulus of elasticity in transversal direction
Fiber modulus of elasticity in transversal direction
Thin foils that have been formed into interlocking hexagonal cells, with axes oriented perpendicular to the face planes.
Core
Honeycomb
Laminate
Sandwich composite
Select the correct composite material definition.
Composite materials are the union of two or more materials that work independently, where each constituent maintains its identity (mechanical, physical, and chemical properties)
Composite materials are the union of two or more materials that work together where each constituent maintains its identity (mechanical, physical, and chemical properties).
Composite materials are the union of two or more materials that work together, where each constituent loses its identity (mechanical, physical, and chemical properties).
Type of fiber that is meant for reinforcement of epoxy, polyester, and other resins for use in the aerospace, marine, automotive, and sports industries.
Kevlar 29
Kevlar 49
Kevlar 119
Kevlar 129
Select the group of fibers that are most used in aeronautics industry
Aramid, Carbon, Glass
Aramid, Carbon, Polyethylene.
Aramid, Glass, Polyethylene
What is the main function of fiber reinforcement in a composite material?
Support the loading of the composite material in any direction
Support the loading of the composite material in the plane
Support the load of the composite material in the longitudinal direction of the fiber.
Support the load of the composite material in the transverse direction of the fiber
What would be the nomenclature for this composite?
(+45, -45, 0)S
((+-45)2, 0/90)S
(+-45, 0/90)2S
(0, 90, +45, -45)S
Select the type of weave shown in the image
Unidirectional
Satin weave
Twill weave
Plain weave
If the composite material supports the same load in any direction it is considered as a ______ material:
Anisotropic
Isotropic
Orthotropic
Which of the following reinforcement type yields to better properties?
Continuous aligned
Random short
Woven cloth
Random aligned
Select the option that is not an aeronautical material
Composites
Superalloys
Advanced ferrous metals
Traditional ceramics
The image above shows a fiber fabrication process.
Which fiber type is this process referring to?
Aramid fiber
Carbon fiber
Polyethylene fiber
Glass fiber
