Composite Materials Flashcards

Flashcards for composite materials review.

Pre-impregnated composite material storage temperature

0 degrees Fahrenheit

What is used to identify the orientation of the fabric?

Ideal fiber to resin ratio (wet layup)

Resin to accelerant (hardener) ratio

In-Service defect example

Composite sandwich core materials

Tap test indication of a defect

NDT methods NOT used for composites

Fiberglass in structural components

Main composite components

Weight reduction and reinforcing fibers

Isotropic definition:

Composite structures isotropic?

Quasi-isotropic layup

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Fiberglass location on aircraft

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Carbon fiber laminate location on aircraft

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Lightning protection fibers

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Thermosetting resins

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Epoxy resins

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Dry fiber impregnation point

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Hygroscopic

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Kevlar

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Thixotropic

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Sandwich composite structure

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Manufacturing defects

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Fiber breakage criticality

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In-service defects

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Skydrol saturation concerns

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Composite erosion vs Aluminum erosion

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Corrosion with fiberglass/aramid

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Composite top coating necessity

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Visual Inspection of composites

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Audible Sonic Test (tap test)

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Tap test negation circumstances

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NDT for delamination

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NDT for water in core cells

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Moisture meter operation

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Aluminum tool during cure cycle

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Vacuum bag use

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Composite curing methods

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Composite layup types

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Wet layup process

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Mechanical Life (Prepreg)

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Composite strength/stiffness dependence

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Resin mixing

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Traditional fabric impregnation

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Potting compound filler

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Potted repair strength

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The first step of any composite repair process

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Bonded repair disadvantage

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