ASTM D5379 PDF

The composite materials are limited to continuous-fiber or discontinuous-fiber-reinforced composites in the following material forms: Link to Active This link will always route to the current Active version of the standard. Send us a request Wilton UK: A notched beam specimen is placed in a d fixture. Work Item s — proposed revisions of this standard. Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world. Touchstone Research Laboratory, Ltd.

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This test procedure introduces the compressive force into the specimen through shear at grip interfaces. The test utilizes a standard universal testing machine and a specially-designed fixture with wedge grip interfaces that clamp one half of the test specimen across its width and support it on its back face as described in the specification. The lower fixture should be mounted on a base plate that supports a linear bearing shaft.

The upper fixture should contain a linear bearing which mounts over the shaft on the base. A minimum of two shear strain gauges with a thin active gauge section that spans the length of the test section between notch roots is recommended to complete the test procedure. Zero the force reading. Place the specimen loosely into the fixture making sure the notch alignment tool is pulled up into the notch. Lightly tighten the left-hand-side-jaw, and then lightly tighten the right-hand-side jaw.

Make sure that the specimen is centered in the fixture and that it is contacting both upper and lower grip jaws on both sides while still being supported on the back side. Apply the force at a constant strain rate until failure. Record force versus strain or position. When the specimen breaks, record the maximum force, the force at failure and the strain as near as possible to the failure.

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