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Composites - polymer matrix composites (PMCs)

Composites - polymer matrix composites (PMCs) . Matrix. 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.

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Composites - polymer matrix composites (PMCs)

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  1. Composites - polymer matrix composites (PMCs) Matrix

  2. Composites - polymer matrix composites (PMCs) Very common - polyesters, vinyl esters

  3. 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

  4. non-coupled coupled Composites

  5. Composites Fibers - variables amount fiber length distribution orientation

  6. Composites Fibers - variables amount fiber length distribution orientation Fiber orientation can be random aligned intermediate

  7. Composites

  8. Composites

  9. Materials selection - some considerations Economics Environmental Political Market Aesthetics Material properties

  10. Materials selection - material cost Relative cost - compared to that of hot rolled ASTM A36 plate (0.29C-1Mn-0.28Si) (unit wt. basis)

  11. when drawing SS to rod need lubricant Materials selection - environmental Health hazards Recycling Metals particularly suited to recycling - can be easily sorted, remelted, & shaped Ceramics usually not recycled - many polymers are Composites difficult to recycle - difficult to separate fibers from matrix

  12. Materials selection - political Who writes the specs for contract bids? Will they specify stainless steel rebar in roads & bridges?

  13. vs …… Materials selection - market Carrera GT vs …… Kia

  14. Materials selection - aesthetics

  15. Materials selection - properties

  16. Materials selection - properties

  17. Materials selection - properties

  18. 500 MPa P=50 Materials selection - properties

  19. 500 MPa Materials selection - properties

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