ASTM-D6671 › Historical Revision Information
Standard Test Method for Mixed Mode I-Mode II Interlaminar Fracture Toughness of Unidirectional Fiber Reinforced Polymer Matrix Composites
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1.1 This test method describes the determination of interlaminar fracture toughness, G
1.2 This test method is limited to use with composites consisting of unidirectional carbon fiber tape laminates with brittle and tough single-phase polymer matrices. This test method is further limited to the determination of fracture toughness as it initiates from a delamination insert. This limited scope reflects the experience gained in round robin testing. This test method may prove useful for other types of toughness values and for other classes of composite materials; however, certain interferences have been noted (see Section ). This test method has been successfully used to test the toughness of both glass fiber composites and adhesive joints.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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.
composite materials; delamination; interlaminar fracture toughness; mixed-mode bending; Mode I-Mode II; ICS Number Code 19.060 (Mechanical testing); 83.120 (Reinforced plastics)
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March 1, 2006