chapter 6 Flashcards
What is brittleness
Tendency to fracture when even small load/deformation is applied i.e glass
what is creep
creep is deformation of material at elevated temperature
what is Elasticity
ability to return to original shape after deformation
what is plasticity
ability of material to maintain deformation/shape
what is fatigue
ability of metal to sustain a repeated cyclic road
what is resilience
ability to absorb energy and resist soft/impact loading
what is stiffness
ability to resist additional deformation when loading is continuous
what is toughness
ability of material to resist fracture.
what can be used to to quantify materials
tensile test we can get experimental numerical data
does strain have units
no strain does not have units but in many cases you will see”in/in” or percent sign
what does stress and strain equation apply
stress and strain apply to tension and compression
what is shear starin
measure of how much material deforms in response to shear stress
what is sheer tress
shear stress is a type of stress that occurs when forces are applied parallel or tangential to a material surface causing layer of material to slide relative to each other.
when is material perfectly distributed
when alpha equal beta
what is torsion
not deforming a material in parallel plates but twist the material
