materials compression vs tension epoxy + carbon fiber concrete + rebar FR1, FR4 tire adobe wood fibers chopped, filament, tape, fabric glass carbon aramid natural: cotton, linen, silk, bamboo, wood, ... resins epoxy phenolic urethane natural: plant oils, sugars, ... processes wet lay-up vacuum bagging pultrusion resin transfer molding pre-preg autoclave heat, pressure, sensing forms machined folded press-fit skinned safety particles, respirators fumes net-shape vendors Aremco Ashland DuPont Urethane Soy Systems West Marine Fiberglass Supply US Composites Hexcel Exel Gurit Toray Spirit AeroSystems assignment make a composite structure guru composites: JB lab sections Tue: 3:00 Nadya Wed: 9:00P Kenny Thurs: 4:00P Steffen (rescheduled)