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1.1 This test method covers the determination of the tensile properties of metal matrix composites reinforced by continuous and discontinuous high-modulus fibers. Nontraditional metal matrix composites as stated in 1.1.6 also are covered in this test method. This test method applies to specimens loaded in a uniaxial manner tested in laboratory air at either room temperature or elevated temperatures. The types of metal matrix composites covered are:
1.1.1 Unidirectional--Any fiber-reinforced composite with all fibers aligned in a single direction. Continuous or discontinuous reinforcing fibers, longitudinal and transverse properties.
1.1.2 0o/90oBalanced Crossply-- A laminate composed of only 0 and 90o plies. This is not necessarily symmetric, continuous, or discontinuous reinforcing fibers.
1.1.3 Angleply Laminate--Any balanced laminate consisting of + theta plies where theta is an acute angle with respect to a reference direction. Continuous reinforcing fibers without 0o reinforcing fibers (that is, (+45)ns, (+30)ns, and so forth).
1.1.4 Quasi-Isotropic Laminate--A balanced and symmetric laminate for which a constitutive property of interest, at a given point, displays isotropic behavior in the plane of the laminate. Continuous reinforcing fibers with 0o reinforcing fibers (that is, (0/+45/90)s, (0/+30)s, and so forth).
1.1.5 Unoriented and Random Discontinuous Fibers.
1.1.6 Directionally Solidified Eutectic Composites.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D3878 Terminology for Composite Materials
E4 Practices for Force Verification of Testing Machines
E8 Test Methods for Tension Testing of Metallic Materials
E83 Practice for Verification and Classification of Extensometer Systems
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
E1012 Practice for Verification of Testing Frame and Specimen Alignment Under Tensile and Compressive Axial Force Application