9.2Q) Material Properties Quiz

Match the following

• Bulk Modulus

• Ratio of lateral strain to axial strain (no units)

• Young's Modulus

• a measure of the stiffness of a material; the higher the elastic modulus the stiffer the material.
  Types include Young's, bulk, and shear moduli.

• Shear Modulus

• A type of modulus defined by the ratio of pressure to volumetric compression (GPa) or ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume

• Elastic Modulus

• A type of modulus defined as the ratio of linear stress to linear strain (MPa) (influences the stiffness and flexibility of an object)

• Poisson's Ratio

• A type of modulus defined as the ratio of shear stress to shear strain (MPa)

Match the following

• hardness

• A measure of stiffness defined as the resistance to localized plastic deformation induced by either mechanical indentation or abrasion.

• Resilience

• Ability to withstand wear, pressure, or damage; hard-wearing over a long period of time.

• Durability

• ability to absorb energy and NOT break. combination of strength and plasticity over a short period of time.

• Toughness

• A material property defined as the maximum stress a material can withstand under repeated loading (MPa)

• Fatigue Limit

• Ability of a material to absorb energy when it is deformed elastically (MPa); combination of strength and elasticity over a short period of time.

Tags

NGSS.HS-PS1-3

Match the following

• Elasticity

• Ability of a material to deform under tensile load (% elongation). It is the property of a material by which it can be drawn into wires under the action of tensile force.

• Malleability

• ttened into thin sheets under applications of heavy compressive forces without cracking by hot or cold working means.This property of a material allows it to expand in all directions without rupture.

• Plasticity

• the material keeps the new shape after being deformed by a stress, i.e. a wet ball of clay

• Brittleness

• the ability to return to original shape after being deformed

• Ductility

• tendency to break instead of deforming when a stress is applied

Match the following

• Coefficient of restitution

• A material property defined as the mass per unit volume (kg/m^3)

• Friction coefficient

• A material property defined as the deviations in the direction of the normal vector of a real surface from its ideal form

• Density

• A material property defined as the amount of force normal to surface which converts to force resisting relative movement of contacting surfaces between material pairs. Dependent on the mass of the object and the surface roughness of the contacting surfaces.

• Surface roughness

• resistance to distortion

• Strength

• A mechanical property defined as the ratio of the final to initial relative velocity between two objects after they collide. Range: 0-1, 1 for perfectly elastic collision.

Tags

NGSS.HS-PS2-3

Match the following types of strain.

• Compression

• The result of a pushing together or squeezing, i.e. bed springs, can crusher

• Torsion

• The result of a twisting force, ex. wringing out a towel

• Flexural

• The ratio of the horizontal displacement to the height of the block.

• Shear

• Occurs in the same direction as the applied stress. The ratio of the change in length of a material to the original length.

• Axial

• Results from bending due to a bending stress.

Match the following

• Stress

• The type of strain defined as a tendency of a material's particles to undergo plastic deformation due to a dislocation motion within the material. Common in Crystals.

• Force

• Force causing a deformation or change in shape

• Strain

• A push or a pull.

• Tension

• pulling along the length of a material, i.e. tug of war

• Slip

• is a measure of the deformation (change in size or shape) that occurs in a material due to applied stress.