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ASTM D3800-99(2010)

ASTM D3800-99(2010)

Standard Test Method for Density of High-Modulus Fibers

2017-08-16 /Historical
Superseeded by:
Significance and Use:

Fiber density is useful in the evaluation of new materials at the research and development level and is one of the material properties normally given in fiber specifications.

Fiber density is used to determine fiber strength and modulus both of a fiber bundle and an individual filament. These properties are based on load or modulus slope over an effective area. Fiber density may be used with lineal mass of the fiber to give an approximation of effective tow area. Tow area divided by the average number of filaments in a tow gives an approximation of the effective area of an individual filament.

Fiber density is used as a constituent property when determining reinforcement volume and void volume based on reinforcement mass and laminate density.


1.1 This test method covers the determination of the density of high-modulus fibers and is applicable to both continuous and discontinuous fibers.

1.2 The values stated in SI units are to be regarded as standard.

1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See Section 9 for additional information.

Archimedes method; buoyancy method; density; fiber density; Continuous high-modulus fibers; Archimedes method; Bouyancy method; Density; Discontinuous high-modulus fibers; Eureka test; Fiber density; High modulus fibrous composites; Sink-float method
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