Mechatronic Systems Engineering 3301A/B Lecture Notes - Lecture 2: Glass Transition
30 Jul 2020
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Document Summary
The members of a material family have certain features in common: similar properties similar processing routes similar applications. There are six important families of materials for mechanical design: Ceramics and glasses: hard, brittle, and heat & corrosion resistant. Metals: ductile, tough and good thermal and electrical conductors. Elastomers: have the ability to deform elastically to large strains. Hybrids: have the combined properties of two or more of the others. Wide range of strengths depending on composition and processing. Strain can increase with time under load (creep) Simply polymers with glass transition below room (operating) temperature. Largely defined as its own category due to difference in functional uses. Able to retain initial shape after being stretched. The materials information of structured allowables , documentation and cost and market is needed for design. Allowables are values of properties that, with a given certainty, can be guaranteed. It consists largely of text, graphs and images.
