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Chemical digestion is described in ASTM D3171. A chemical must be chosen that does not attack the fibers. Typical selections include nitric acid for epoxy, sulfuric acid and hydrogen peroxide for polyimides and PEEK, and others as described in ASTM D3171. An alternative approach, commonly used for glass fiber composites, is the resin burn-off method, described in ASTM D2584. The fiber volume fraction is calculated as
Related Terms
• Fiber-Resin Ratio
• Void Content
• Void Ratio
• Volume Fraction
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Definition Copyright ©1989 CRC Press LLC. All rights
reserved.
where
Vf = volume fraction of fibers
Wf = weight of fibers
Wm = weight of matrix
ρf = density of fibers
ρm = density of matrix
Elsewhere on the Web:
ASTM D3171
Standard Test Method for Constituent Content of Composite MaterialsASTM D2584
Standard Test Method for Ignition Loss of Cured Reinforced Resins
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<Preface> <Suggest a Word> <CRC Press Catalog>
<Abbreviations/Acronyms> <Symbols>
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
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