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Do not read so much, look about you and think of what you see there – Feyman. Crystal whiskers - SiC. Composites - polymer matrix composites (PMCs). Fibers: mainly - glass (GFRPs), carbon (CFRPs), aramid, others - B, SiC, Al 2 O 3. Composites - polymer matrix composites (PMCs).
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Do not read so much, look about you and think of what you see there – Feyman
Composites - polymer matrix composites (PMCs) Fibers: mainly - glass (GFRPs), carbon (CFRPs), aramid, others - B, SiC, Al2O3
Composites - polymer matrix composites (PMCs) Fibers: mainly - glass (GFRPs), carbon (CFRPs), aramid, others - B, SiC, Al2O3
Composites - polymer matrix composites (PMCs) Fibers: mainly - glass (GFRPs), carbon (CFRPs), aramid, others - B, SiC, Al2O3
Composites - polymer matrix composites (PMCs) Fibers: mainly - glass (GFRPs), carbon (CFRPs), aramid, others - B, SiC, Al2O3
Composites - polymer matrix composites (PMCs) Fibers: mainly - glass (GFRPs), carbon (CFRPs), aramid, others - B, SiC, Al2O3
Composites - polymer matrix composites (PMCs) Carbon fibers frequently used as woven fabrics impregnated with an epoxy
Composites - polymer matrix composites (PMCs) Woven carbon fiber fabrics in auto industry - 2006 BMW M6 - roof (unpainted) 'vette Z06 - front fenders, wheel wells, floor Porsche Carrera GT ($440,000) - frame Scion accessories - gear shift knob ($49), fuel-filler door ($39), roof pillar appliqués ($75-189), etc.
Composites - polymer matrix composites (PMCs) Very common - polyesters, vinyl esters
Composites Role of matrix in FR composites: a. transfer stresses betwn fibers b. provide barrier to environment c. protect fibers Matrix/fiber bond: matrix must wet fiber physical & chemical bond desirable mechanical interlocking Fibers frequently coated w/ coupling agent
non-coupled coupled Composites
Composites Fibers - variables amount fiber length distribution orientation
Composites Fibers - variables amount fiber length distribution orientation Fiber orientation can be random aligned intermediate
Assignment: Review today's classnotes a. PMCs - fibers b. vinyl esters c. matrix/fiber bond d. fiber characteristics & behavior Read pp. 538-563
Composites - polymer matrix composites (PMCs) Role of matrix in FR composites: a. transfer stresses betwn fibers b. provide barrier to environment c. protect fibers Slow crack growth deflect crack tips redistribute stresses around crack tips bridge crack tips