Composite Materials MCQs

Composite Materials MCQs

These Composite Materials multiple-choice questions and their answers will help you strengthen your grip on the subject of Composite Materials. You can prepare for an upcoming exam or job interview with these Composite Materials MCQs.
So scroll down and start answering.

1: What property value is the basis above which 95% of the population falls with confidence?

A.   A-BASIS

B.   B-CASIS

C.   C-DASIS

D.   A+BASIS

2: What is the BASIS property value?

A.   The "B" mechanical property value

B.   The "S" physical property value

C.   The "A" mechanical property value

3: The degradation, decomposition, and erosion of a material caused by high temperature, pressure, time, percent oxidizing species, and velocity of gas flow is called what?

A.   ABLATION

B.   DECOMPOSITION

C.   EROSION

4: What do you lose when Ablation is occurring?

A.   Energy

B.   Material

C.   Heat

5: What type of plastic absorbs heat through a decomposition process that takes place at or near the surface?

A.   Ablative PLASTIC

B.   Polyolefin

C.   Polypropylene

D.   Polycarbonate

E.   Thermoplastic PLASTIC

6: What is the process that takes place at the surface during ablation?

A.   Deposition

B.   Sublimation

C.   Collision

D.   Pyrolysis

E.   Flaming

7: What is the wearing away of a surface by natural means?

A.   VOLCANES, ERUPTIONS, etc

B.   A combination of RAIN, WIND, and SUN

C.   GROUND WATER, RIVERS, etc

D.   RAIN, WIND, etc

E.   COAL

8: What does abrasive power impart to rubber articles?

A.   Increased durability

B.   Increased hardness

C.   Protecting rubber articles from wear and tear

D.   Producing a shine on rubber articles

E.   Abrading, grinding, or polishing

9: What would BACK DRAFT interfere with?

A.   The production of the model

B.   The shipment of the model

C.   The flow of blood

D.   The transmission of electricity

E.   The withdrawal of the model from the mould

10: What is the term for the pressure under the vacuum bag?

A.   DOWN PRESSURE

B.   VACUUM PRESSURE

C.   AIR PRESSURE

D.   BACK PRESSURE

11: What causes a material to resist continued flow after closing a mould?

A.   Viscosity

B.   Surface tension

C.   Adhesion

12: What is another way of saying the same thing as "Bisphenol 'A' diglycidylether"?

A.   DIGEA

B.   DBAA

C.   DEG

D.   DGEBA

E.   Bis-(2-ethylhexyl)A

13: What additive is found in DGEBA?

A.   Monoethylene glycol

B.   Triethylene glycol

C.   Dimethylsulfoxide

D.   Diglycidylether

E.   Dichloromethane

14: What part of the bag is cured against the vacuum bag?

A.   BAG BOTTOM

B.   STRIP PAPER

C.   FABRIC LINING

D.   PAPER SIDE

E.   BAG SIDE

15: If the bage is on the bag side, which way is it facing?

A.   Over

B.   Against

C.   With

16: What is the only type of deformation that can occur in a BALANCED CONSTRUCTION?

A.   Extension or compression deformations

B.   Bending deformations

C.   Shear deformations

D.   Torsional deformations

17: What can be a single part of a cabled yarn?

A.   A yarn needle

B.   A ball of yarn

C.   A cable needle

D.   One or more part of a cabled yarn

18: What is the cable described as having a 3-2?

A.   One 4-ply

B.   One 6-ply

C.   Two 3-ply

D.   Three 2-ply

19: What does it mean to have more than two plied yarns twisted together?

A.   Two strands of yarn twisted together

B.   Crocheted fabric

C.   Cabled yarn

D.   Knitting on the wrong side

E.   Knitted fabric

20: What is the purpose of a calendar?

A.   To record important dates

B.   To produce a smooth finish and a desired dimensional thickness for sheet material

C.   To keep track of holidays

D.   To help people keep track of important dates

E.   To track the progress of days, months and years

21: What can a calendar produce?

A.   A calendar with unique and interesting artwork

B.   A smooth finish and a desired dimensional thickness

C.   A rough finish and a desired dimensional thickness

D.   An uneven finish and a non-desired dimensional thickness

E.   A single finished piece that is dimensionally accurate

22: What does CAMBRELLE resist?

A.   Sun, oil, and water

B.   The sun's UV rays

C.   Abrasion, odor, and pilling

D.   Chemicals and infection

E.   Bacteria, fungi, and pipe cleaners

23: What type of fabric is Cambrelle?

A.   Nylon

B.   Polyester

C.   Cotton

D.   Silk

24: What is the name of the hair from the two-humped Bactrian camel?

A.   HAIR FROM A ZEBRA

B.   ZEBRA’S HAIR

C.   WOOL

D.   HARE’S HAIR

E.   CAMEL’S HAIR

25: What animal produces the Camel's Hair?

A.   Wild Ass

B.   Welsh Pony

C.   Giraffe

D.   Bactrian camel

E.   Arabian camel

26: Canvas is made from what material?

A.   Paper

B.   Fabric

C.   Plastic

D.   Cotton

27: What is the densest crystalline form of carbon?

A.   Diamond

B.   C-C

C.   Graphite

28: A DAM prevents which problem?

A.   Excessive edge bleeding or resin run-out

B.   Reduced productivity

C.   Improperly cured resin

D.   Poor part quality

E.   Poor dimensional stability

29: What are cracks in a DAMT tolerant structure not allowed to grow to during expected service life?

A.   Widening

B.   Critical size

C.   Wall thickness

D.   Vertical separation

E.   Seismic flexure

30: What does poor prefabrication control and handling lead to?

A.   Poor final product quality

B.   Premature failure

C.   Filament damage

31: What kind of damage could cause the strength of a fibre to be reduced?

A.   Core

B.   Sheath

C.   Shear

D.   Twisting

E.   Filament

32: What term describes the decay with time of the amplitude of free vibrations of a specimen?

A.   Amplitude

B.   Decay

C.   Vibrations

D.   Damping

33: What does Damping indicate about the amplitude of free vibrations of a specimen?

A.   The number of cycles per second

B.   The amplitude of the free vibrations

C.   A high amplitude

D.   A low amplitude

E.   The decay with time

34: What term refers to accidental damage?

A.   IRRITATION

B.   DEBOND

C.   CRACK

D.   FRESH PAINT

35: What is an example of an intentionally created debond?

A.   A defect that was not discovered during production

B.   Repair or rework purposes

C.   A weld that is too thin

36: What company makes EcoPile?

A.   Walmart

B.   Draper Knitting Mills

C.   J.C. Penney

D.   Macy's

37: What percentage of bottles are used to make ECOFleece?

A.   100 percent

B.   50 percent

C.   25 percent

38: What type of plastic is used to make Ecopile?

A.   Postconsumer recycled

B.   Virgin plastic

C.   Recycled PET

D.   PP

E.   Preconsumer recycled

39: What is the term for removing excess resin through the laminate's edge?

A.   Trimming

B.   Edge bleeding

C.   Laminate edge trimming

D.   Overlamination

E.   Laminate edge sanding

40: What type of bleed is removal of volatiles and excess resin through the edge of the laminate?

A.   LAP BLEED

B.   EDGE BLEED

C.   CORNER BLEED

D.   CENTER BLEED

41: What are the members on a sandwich panel called?

A.   PANEL MEMBERS

B.   EDGE CLOSE-OUTS

C.   SUB PANELS

D.   SUPER PANELS

E.   JUDGES

42: How were members of the panel used to protect the sandwich?

A.   Between the sandwich and the pan

B.   In the middle of the panel

C.   Around the panel sides

D.   On top of the sandwich

E.   In between the sandwich and the pan

43: What is another term for delamination?

A.   FIBER DELAMINATION

B.   BLISTERING

C.   CROSS-LAMINATION

D.   LAYER DELAMINATION

E.   EDGE DELAMINATION

44: What happens when an edge is delaminated?

A.   A separation of the detail parts along an edge

B.   A separation of the material along an edge

C.   The edge fails and requires a new cut

D.   A separation of the polymer layer

E.   The degradation of adhesion between the polymer and detail parts

45: What does the term edgewise refer to when applied to the cutting of a specimen?

A.   The specimen is moved in a straight line

B.   The specimen is rotated

C.   The load is applied

D.   The specimen is rotated around its longitudinal axis

46: What does the term edgewise refer to?

A.   Cutting specimens

B.   The blade itself

C.   Direction of the blade

D.   The body of a ship

47: What is a type of material that is constructed of interlaced yarns, fibres or filaments?

A.   CORDUROY

B.   FABRIC

C.   ROPE

D.   WOOL

E.   SANDWICH

48: The word "fabric" is commonly used interchangeably with what term?

A.   Fabric

B.   Fabricate

C.   Fabrication

D.   Cloth

49: How many warp yarns are in a fabric that has 24 ends in every inch of fill direction?

A.   22

B.   24

C.   26

50: What is the term for the side of a piece of fabric where the yarns are all parallel to the selvage edge?

A.   BOTTOM OF YARN

B.   BOTTOM FACE

C.   WRAP

D.   TOP OF YARN

E.   FABRIC FILL FACE