Mechanical Properties of Materials
Static properties we will explore include:
-strength -plasticity -elasticity -ductility -hardness -malleability
Which of the following is not a mechanical property of materials? A) Hardness B) Resistivity C) Strength D) Ductility
B) Resistivity
___________________ implies the lack of ductility and toughness.
Brittleness
Which do you think is the least elastic material? Hint: imagine bending each of these materials. A) Rubber B) Nylon C) Glass D) Plastic
C) Glass
_______________ is the slow plastic deformation that occurs when a load is applied for long periods.
Creep
Which do you think is the most malleable substance? A) Copper B) Ice C) Glass D) Rubber
D) Rubber
_____________ is the ability to be drawn out longitudinally to a reduced cross-section.
Ductility
_______________ is the material's ability to return to its original shape after being deformed.
Elasticity
__________________ is when a material can fail at a lower than normal stress if the load is applied many times.
Fatigue
_____________ is the resistance to wear or indentation of a material.
Hardness
_____________ is the ability of the material to be permanently stretched in all directions without fracture.
Malleability
_____________ is the readiness to deform to a stretched state when a load is applied.
Plasticity
______________________ is the ability of a material to absorb energy on deformation and return a proportion of it when the deformation is removed.
Resilience
___________ is the ability to resist a force without breaking.
Strength
___________________ is the ability to withstand a sudden force.
Toughness
A dynamic property is defined as one that changes with time. Is this true or false? Answer True or False.
True
The ___________________properties we have explored are different examples of static mechanical properties. Another group of mechanical properties is ___________________. These are properties that change with time.
mechanical dynamic