Inglés

What is the most simple composite is composed of two elements: a. The structure itself and any kind of liquids. b. Matrix and reinforcing material. c. Technology and solids.

(2) Excessive weight should not be added by applying excessive resin material. TRUE. FALSE.

(3) Do not________ the test solution enter joints or go below rivet heads. The test solution can cause corrosion. a.Get. b.Let. c.Cut.

(4) What is the correct definition for "Aspect ratio. a. the weight for a fiber reinforcement per unit area (width x length). b. The ratio of length to diameter of a reinforcing fiber. c. A large vessel used to cure laminates and bonded parts.

(5) Do not give as much strength to the composite structure as refitting the hole with a new core. Fillina the core with resin?microballoon mixture will add weight and decrease the flexibility of the part. a. composite skin repair. b. mechanically fastened repairs with pre-cured patches. c. Potted repair.

(7) Pre-preg fabrics are manufactured to eliminate the mixing, applying and worry about the whether the proper mix ratio was used or if the proper amount of resin was applied. a.True. b. False.

(8) The threads which run the length of the fabric as it comes off the bolt are referred to as: a.BIAS. b.Warp. c.Weft.

(9) How is the aromatic polymide fiber (ARAMID) known as?. a.Graphite. b.Fiberglass. c.Kevlar.

(10) __________and attach a safety harness when you work on high sections. A fall can injure or kill you. a.Remove. b.Lock. c.wear.

(11) The side of the fabric where the greatest number of yarns are parallel to the selvage edge. a. Warp face. b. Warpage. c. Warp direction.

(12) How is the bonding material that completely surrounds the fiber to give strenght and transfer stresses to the fibers called?. a.Matrix. b. Caddling. c. Cable jacket.

(13) What is a void?. a. Dimensional distortion in a plastic object. b, Materials, such as water and alcohol, in a sizing or resin formulation, that are capable of being driven off as a vapor at room temperature or at slightly elevated temperature. c. An emply área in the composite.

(14) Some resins are made for laminating, so they are not generally thinner, and cannot be worked into the fibers. a. True. b. False.

(15) What happens if damage has ocurred to the core materials of a sandwich structure?. a. The damaged core materials must be removed first. b. The damaged core materials must be analized first. c. The damaged core materials must be repaired first.

(16) A union that can be easily disassembled. a. cure. b. breakable joint. c. barrier coating.

(17) Do not________ or wax the slats in the unpainted areas of the leading edge. a. Smooth. b. Polish. c. Mixea.

(18) Which company was the first to use a carbon spoiler and the first to use Nomex honeycomb on their aircraft?. a.AIRBUS. b. BOEING.

(19) Small spheres of plastic or glass: a. Fillers. b. Chopped fibers and flox. c.microballon.

.Is Adobe the oldest manmade building material?. a. NO. b. Yes.

(21) . These fibers are used where a high temperature application is needed,. a. Ceramics. b.Boron. c. both are correct.

(22) What agents can be used for cleaning dust, grease and mold release agents from composite components?. a.Isopropyl Alcohol. b.MEK, Ethyl, keytone. a.Acetone.

(23) . The threads that are designed as 90 degrees are: a.Warp. b. Weft. c. Selvage e.

(24) __________the area adjacent to the damage with the masking paper and masking tape. a.Cover. b. Cut. c. Fix.

(25) This is a period of time within which a joint that must be sealed, must be riveted, bolted or temporarily fastened. a.Work life. b. Cure. c.Leak path.

(26) What is the definition for "batch" or "lot"?. a. a layer of material used during the manufacture or repair of a part to allow entrapped air and resin to escape. b.a 45 degree angle to the warp threads. Fabric can be formed into contoured shapes by using it. c.Material that was made with the same process at the same time having identical characteristics throughout.

(27) What is it necessary when working with any resins or solvents. a.Space. b.aglass. c.proper ventilation.

(28) Which of the following has the greatest strength-to-weight ratio?. a. Foam. b. Honeycomb.

(29) Locates flaws by temperature variations at the surface of a damaged part. a.Laser holography. c.Thermography. b.Ultrasonic inspection.

(30). Once the fabric is impregnated with resin, the____________ placed over it, the patches can be cut out with a utility knife. a. Plastic marked sheet. b. maked plastic sheet. c. sheet marked of plastic.