material selection properties-what are the requirement for the most suitable structural material? Correct Answer-the structural material that combine stiffness and elasticity are considered the most suitable material.
material selection properties-elasticity? Correct Answer-The ability of a mate...
Exac: materials Questions with Correct Answers
material selection properties-what are the requirement for the most
suitable structural material? Correct Answer-the structural material that
combine stiffness and elasticity are considered the most suitable
material.
material selection properties-elasticity? Correct Answer-The ability of a
material to bounce back after being disturbed
- the ability of the body to deform under stress, bend, stretch and
compress when the external forces are applied and return to its original
shapes when the forces are removed.
material selection properties-elastic limit? Correct Answer-Maximum
stress that a material will withstand without permanent deformation.
material selection properties-Ductile material Correct Answer-A
material which can be drawn out into a wire. This implies that plastic
strain occurs under enough stress.
- the material that undergo plastic deformation before breakage are
called ductile material.
material selection properties-plastic deformation Correct Answer-
permanent deformation caused by strain when stress exceeds a certain
value
,material selection properties-Brittle material Correct Answer-A material
that undergoes little deformation under increasing force, until it breaks
suddenly. example glass
material selection properties-stiffness? Correct Answer-The resistance of
an elastic body to deflection by an applied force.
the force that is applied to the material to bring it to the elastic limit.
material selection properties-what is dimension stability of the material?
Correct Answer-the property of the material to keep its dimension
properties especially when the direct affect of the moisture content or
atmosphere are applied to it. dimension ability is important when
considering material selection.
material selection properties-water and vapor resistance Correct Answer-
the resistance to water and vapour is an important factor in selection of
the material for construction.
material selection properties-thermal conductivity Correct Answer-The
ability of an object to transfer heat
material selection properties-material selection and light, radiant heat,
transmission ? Correct Answer-the material property that reflect or
absorb light are important factors for deciding a material selection
the reflection or absorption of radiant heat should also be considered in
selecting the material.
,material selection properties- what is density and hardness of a material?
Correct Answer-the ability to resist wear and abrasiveness. durability of
a material.
important factor when considering material section.
material selection properties - combustion
combustion Correct Answer-the property of the material to resist
combustion.
-withstand exposure to fire.
-not produce toxic smoke/gases or smell.
material selection properties - colour, texture, scale , shapes Correct
Answer-important factor considering design requirement and
presentation of the material.
many material are produces in certain shapes and sizes, it varries with
the manufacture little bit but relatively small. this is also a factor to
consider when selection of the material.
eg- bricks, stock dimension etc.
material selection properties? Correct Answer-elasticity
ductile material
, stiffness
plastic deformation
resistance to water and vapor
brittle material
resistance to exposure to heat, not producing toxic waste etc.
absorption of light,
absorption of sound
colour/texture /shape
combustion
thermal conductivity
What is a life cycle assessment? Correct Answer-the selection and
valuation of material should not only limit to its functional aspect,
aesthetic and economic aspect but should also consider the impact of the
the environmental factors.
The investigation and valuation of the environmental impacts of a given
product or service caused or necessitated by its existence.
the life cycle assessment of a material includes,
-extraction of the raw material.
-processing of the raw material.
-manufacturing, packaging and transportation of the finished product
-maintenance of the material in use.
-possible recycling and reuse of the material and its final disposal.
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