MATSE 259: Exam 1

Material sciences

106 cards   |   Total Attempts: 193
  

Cards In This Set

Front Back
Who said, "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools."
Douglas Adams
Who said, "It's easy to come up with new ideas; the hard part is letting go of what worked for you two years ago, but will soon be out of date."
Roger von Oech
Isotropic Material
Having identical values of a property in all crystallographic directions
Anisotropic Material
Property of being directionally dependent, homogeneity in all directions. A difference in a physical property for a material when measured along different axes
Yield Strength
Intersection of 0.002 offset and stress-strain curve
Tensile Strength
Stress at the maximum of the stress-strain curve, and the maximum stress that can be sustained by a structure in tension
Ductility
Measure of degree of plastic deformation that is sustained at fracture
Resilience
Capacity of a material to absorb energy when it is deformed elastically and then, upon unloading to have this energy recovered
Toughness
Measure of the ability of a material to absorb energy up to fracture. Area under the stress-strain curve up to point of fracture
Proportional Limit
With a gradual transition from elastic to plastic, point of yielding corresponds to the initial departure from linearity
Ductile Material
Experiances significant plastic deformation upon fracture
Brittle Material
Experiances very little or no plastic deformation upon fracture
Resilient Materials have ____(high/low) yield strengths and ____ (high/low) moduli of elasticity
High, low
Mechanical properties are ____ (sensitive/insensitive) to any prior deformation, presence of impurities, and heat treatments to which the material is subjected
Sensitive
Modulus of elestacitiy is ___ (sensitive/insenstive) to any prior deformation, presence of impurities and heat treatments to which the material is subjected
Insenstive