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easy to come up with new ideas; the hard part is letting go of what worked for you two years ago, but will soon be out of date."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