Non Metallic Structures Flashcards
Most popular wood is _____
BALSA
Honeycomb is made out of ____, ____, ____
Metal / plastic / paper
Foam core can be made of _____ _____
Polyvinyl chloride
Extruded polystyrene can be S____ H____ and should use only E______
Safely hotwired / Epoxies
Polyurethane, should you hot wire?
NOOOO, do not hot wire ( cyanide gas )
Polyvinyl chloride (pvc), hot wire?
Nooo, do not hot wire ( chlorine gas )
Resins, primary job is to ________________
Carry the load from 1 fibers to the next
Resins, its pot life is :
the amount of time Catalyzed resin will remain in a workable state
Ratio of fiber to resin should be ___:___
60:40 fiber to resin ratio
Micro balloons have __-__ usage
Non-structural
Microballoons, slurry ratio?
1:1 by volume
BONDO is also called
Aerodynamic body filler
Lay-ups are ____,____,____,____,___,____
Warp/Woof/Weft/Fill/Bias/Selvage edge
The strength and stiffness of a composite lay up depends primarily on the
Orientation of the plies to the load direction
In regards to lay ups, you should work with (what material / fabric)
Dry cloth
Corrosion resistant fasteners should be used with
Graphite
What kind of test can be used to check for delamination?
Tap test
In advanced composites, using materials and techniques traditionally used for fiberglass repairs, will result in ____ ____
UnAirworthy repairs
To repair damaged fastener holes, use ____ or ____ __ with _____ ____
Flox, chopped glass, with wet resin
When replacing a honeycomb core, the ribbon direction of the insert must be_______________
the same as the original core
Less than ___”______ for potted compound repairs
1” diameter
Superficial scars, scratches, etc on fiberglass laminates can be repaired by
Applying one or more coats of resin to the surface
Damage that extends completely through the facing and into the core requires
Replacement of the core and facing
(Vacuum bagging) bleeder ply absorbs _____ ____
Excess resins
Thermosetting, requires _____ to ____
Heat to harden
Thermoplastic, softens with the application of ____ and can be _____ and still _____________
Heat, reformed, retain their structural strength
Acrylics, if rubbed with ______ the acrylic turns white
Acetone
Cellulose acetates, ____ does not affect acetate clarity
Acetone
When cementing plastics, the most common method is
SOAK method
Small hairline cracks in the surface of the plastics is _____
Crazing
_____ appears as areas of hazy/milky spots on the surface or within the acrylic
Crazing
Seat belts must be identified by the marking _____ ____
TSO C22
