Fibrous Assemblies

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Fibrous Assemblies
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Now What?

• At this point the only choices we have to use
  what we made by both types of spinning
• Monofilament
• Sewing thread
• So we move up to the next level

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Woven Fabrics

• Woven fabric
• formed by interlacing two distinct sets of yarns
• warp yarns running the length of the fabric,
  machine direction
• weft/filling yarns running width of fabric,
  cross direction

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Woven Fabrics (2)

• Plain weave
• tightest, strongest
• every end interlaces with every pick

• Matte weave
• good tear and burst resistance
• ends and picks interlace as groups

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Woven Fabrics (3)

• Twill weave
• diagonal appearance
• good tear strength

• Satin weave
• excellent tear strength
• good openness
• common fabric structure in composites

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Woven Fabrics (4)

• Pile weaves
• 3-D structure

• Leno weaves
• open
• stable

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Knitted Fabrics

• Two categories
• weft knitted
• high extensibility widthwise
• tubing, hosiery
• warp knitted
• high dimensional stability
• meshes

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Weft Knitted Fabrics

• Plain knitted
• good widthwise (2x) and lengthwise (1.5x)
  extension

• Rib knitted
• high widthwise (4x) and good lengthwise (1.5x)
  extension

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Warp Knitted-Meshes and Nets
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Braids

• Diagonally interlaced
• strong
• torque balanced
• sutures
• artificial tendons

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Nonconventional

• Nonwovens
• barriers, suture buttresses, sponges and
  absorbents, disposables

• Laminates
• barriers, protective materials