3 credits
Spring 2025 Lecture Distance Learning Upper DivisionThis course encompasses deformation-based microscopic mechanisms, including dislocation motion, diffusion, and viscoplasticity. Macroscopic mechanical response of metals, ceramics, polymers, and composites will be related to elasticity and plasticity concepts for single crystal, polycrystalline, and amorphous materials. Practical design considerations for deformation will be included as well as an introduction to fracture mechanisms.
Learning Outcomes1Conversant with conventional nomenclature, units and notation of mechanical behavior. Examples: Stress, strain, yield strength, fracture strength; yield criteria, flow rules, creep, fracture.
2Estimate relative ranges and values for important properties of common engineering materials. Examples: Young's modulus at room temperature for steels versus most polymers; yield strength ranges for ductile metals.
3Recognize mechanisms for important mechanical behaviors. Examples: Plastic deformation by dislocation glide; plastic deformation by molecular rearrangement; dilatant deformation processes; strengthening mechanisms in crystalline solids.
4Predict mechanical responses based on given information. Examples: Will yielding occur given a stress state and properties? Will fracture occur given a stress state and properties? How will the material change shape for the applied deformation? Which slip system(s) will be operative?
5Explain the fundamental basis for important deformation mechanisms or processes. Examples: Dislocation glide, cross-slip, dislocation climb, precipitation strengthening; molecular orientation; Nabarro-Herring creep; plane strain fracture.
6Apply the mechanisms of deformation to component design or alloy design.
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