KMJ44003 Quiz 2

Which of the following is not a property of matrix materials which are modified by adding particulate fillers?

• Improved performance at elevated temperature

• Decrease in surface hardness

• Modification in electrical conductivity

• Improved abrasion resistance

What is aspect ratio?

• Length to diameter ratio

• Length to depth ratio

• Depth to length ratio

• Diameter to length ratio

Which of the following type of composite is not classified under the category of number of layers?

• Unidirectional fibre reinforced

• Laminar

• Sandwich panels

• Glass-fibre reinforced

When fibers are used as a dispersed phase for the reinforcement of matrices, the resultant composites are known as ____________.

• glass-fiber reinforced composites

• carbon-fiber reinforced composites

• wood-fiber reinforced composites

• unidirectional-fiber reinforced composites

Which of the following is used as reinforcement in advanced polymer matrix composite?

• Glass-fiber reinforced composite

• Carbon-fiber reinforced composite

• Wood-fiber reinforced composite

• Unidirectional-fiber reinforced composite

Which of the following is an application of glass-fiber reinforced composites?

• Adhesives

• Conveyor belts

• Design of ships

• Automotive parts

Which of the following is not an advantage of polymer composites?

• Easy to manufacture and durable

• Excellent thermal, mechanical and chemical properties

• Heavy-weight and non-versatile

• Economical and tailor made

Fillers and additives to composites add _____________.

• performance parameters

• weight

• stress

• colour

What is the meaning of thixotropic?

• Freezing

• Becoming a gel at rest

• Becoming a gel in motion

• Melting

Which of the following does not combine with fiber to give composites?

• Metals

• Ceramics

• Non-metals

• Polymers