Astm D 3518 D 3518M – 94 (Reapproved 2001) pdf free download

Standard Test Method for
In-Plane Shear Response of Polymer Matrix Composite
Materials by Tensile Test of a 645° Laminate1

This standard is issued under the fixed designation D 3518/D 3518M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

This standard has been approved for use by agencies of the Department of Defense.

1. Scope

1.1 This test method determines the in-plane shear response
of polymer matrix composite materials reinforced by highmodulus fibers. The composite material form is limited to a
continuous-fiber-reinforced composite 645° laminate capable
of being tension tested in the laminate x direction.

1.2 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.

1.3 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. Within the text the
inch-pound units are shown in brackets. The values stated in
each system are not exact equivalents; therefore, each system
must be used independently of the other. Combining values
from the two systems may result in nonconformance with the
standard.

2. Referenced Documents

2.1 ASTM Standards:
D 883 Terminology Relating to Plastics2
D 3039/D 3039M Test Method for Tensile Properties of
Polymer Matrix Composite Materials3
D 3878 Terminology for High-Modulus Reinforcing Fibers
and Their Composites3
D 5229/D 5229M Test Method for Moisutre Absorption
Properties and Equilibrium Conditioning of Polymer Matrix Composite Materials3
E 6 Terminology Relating to Methods of Mechanical Testing4
E 111 Test Method for Young’s Modulus, Tangent Modulus,
and Chord Modulus4
E 177 Practice for Use of the Terms Precision and Bias in

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