Wood and composites

The reference wood for aircraft structure is?

Evaluations of wood quality must take into account? 3 items

Aviation quality wood is usually ____sawn to minimize what?

Two commonly used glues for modern wood aircraft construction?

Sandpaper should be used to prepare wood for gluing. True or false

4 time periods critical to their use that almost all adhesives have

To prevent wood from rotting , it should be treated with?

The best finish for internal wood structure is a coat of high quality:

If wood comes up as chunks instead of splinters when picked it is good or rotted?

A wing spar (may or may not) be spliced under the fitting for a lift strut.

A splayed patch cannot be used in plywood skin that is more than ____-inch thick

The taper for a splayed patch is ?
?

3 advantages of composites

The 3 main parts of a fiber composite are:

Two common types of fiberglass?

The aromatic polyamide fiber called Kevlar is also known as?

Aramid is ideal for aircraft parts that are subject to:

Carbon fiber has high (compressive or tensile) strength,but causes (electrolytic or galvanic) corrosion when bonded to steel or aluminum

Firewalls may be made of _____ fiber

The strength of a fiber is (parallel or perpendicular) to the direction that the threads run

Threads which run the length of the fabric as it comes off the rbolt are referred to as

The tightly woven edge that prevents the edge from unravelling to as?

The ____ runs 45 degrees to the warp

Chopped fibers compressed together is known as?

When all the fibers run in one direction it is known as?

Fabrics are more or less resistant to damage than unidirectional weaves

The 2 catagories of resin matrix are:

A thermoplastic resin (will or will not) change shape when reheated while a thermosetting resin (will or will not) change. Shape

Prepreg fabrics must kept _____ to prevent resin from curing

A popular thixotropic agent for use with thermosetting resins to give the resin good body with a minimum weight?

Closed cell styrofoam should be used with (epoxy or polyester) resin only

The ribbon direction of the honeycomb is the direction that the honeycomb can be pulled apart. True or false
True False

Procedures for mixing resins are very important to follow. True or false
True False

The working life of the resin is called

The storage life of unopened tins of resin is called

The core material may be made of ? 3 types

2 common solvents used in composite work are:

5 methods used to manufacture laminates?

The 2 purposes of final finishes on composites?

4 methods to dissipate electrical charge on a composite ?

3 methods for testing and inspecting composites?

What may be used to locate flaws by temp variations on the surface of the damaged part?

True or false. X-ray can be used to detect water inside honeycomb
True False

To detect internal delaminations _______ testing may be used.

Scissors with special serrated steel blades are used to cut ?

Whenever possible when drilling composites try to?

Special brad point drills are available for drilling what type of composites

Aluminum oxide sandpaper ____ be used on carbon fiber.

(steel, carbide, or diamond) drills work on all types of composites and have a long life.

Water break test is used to detect?

Probably the best method to apply pressure to a repair

If a puncture is less than one inch in diameter is able to be patched by?

Injecting resin and micro balloons into a damaged area to repair is known as?

Separation of laminated layers or core material is called?