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Compressive properties of polymer matrix composite laminates using a combined loading compression (CLC) test fixture, by ASTM D Intertek composites. ASTM D – Compression Testing of Polymer Matrix Composite Materials using Combined Loading Compression (CLC). To request a quotation for any test . ASTM D Testing Fixture. This test method indicates the compression properties of strength and stiffness of composite materials with polymer matrix by .

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The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.

ASTM D Compression Testing for Polymer Matrix Composite Laminates

One of the key success factors in sustainable engineering is achieving minimum weight while simultaneously maximising component quality. Specimens should have a uniform rectangular cross section, 12 mm 0. Within the test the inch-pound units are shown in brackets.

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asm The sides are compressed by tightening multiple torque screws which squeeze the fixture together. During the testing process, compressive force is introduced into the specimen by combined end- and shear-loading.

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For high orthotropic materials, f6641 as unidirectional composites, tabs are requested. Link to Active This link will always route to the current Active version of the standard. This test method is applicable to general composites that are balanced and symmetric. The fixture is designed to compress the sample from the sides, prior to the test.



The fixture ships with embedded jaws with serrated style faces. Employees, facilities and procedures have been approved to GL standards for testing fibre-reinforced plastics. Send us a request Wilton UK: Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.

The compressive force is introduced into the specimen by combined end- and shear-loading. Astmm to carefully prep your sample can result in premature end-crushing of the specimen during loading, excessive induced bending or buckling, and even invalidation of your test. The fixture is placed between the platens of a Universal Testing Machine, and if a strain measuring device is being used, it is attached to the specimen.

Standard load ratings up to kN 67, lbf ; higher ratings available upon request Platen diameters from 56 mm to mm 2. Active view current version of standard.

ASTM D Combined Loading Compression Fixture – Composite Laminates | GD

Testing samples should be f6641 mm [5. Each end is designed to sit flush at the top and bottom surface of the fixture. The units are usually megapascals or also ksi.

A universal testing machine can be used to test the untabbed, straightsided composite specimen of a rectangular cross section. This test method determines compressive properties of polymer composite materials by applying combined end-loading and shear-loading using a combined d661 compression CLC fixture.

ASTM D6641

The test fixture is designed to provide a combined loading to the unsupported center 12 mm 0. Historical Version s – view previous 6d641 of standard. There is a specific equation called the Euler buckling equation which can serve to predict the buckling stress. The D fixture is designed to hold up to a 40 inch wide sample. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. This standard does not purport to address all of the safety concerns, if any, associated with its use.


The fixture clamping forces induced by the applied bolt torques required to successfully fail the composite before specimen end crushing must not induce significant stress concentrations at the ends of the gage section of the specimen. This test method determines compressive d66441 of polymer composite materials by applying combined end-loading and shear-loading using a combined loading compression CLC asmt.

Composite reinforcement materials in glasscarbonaramid and hybrids. The test specimen is inserted into atm two halves of the test fixture so that the ends of the specimen are flush with the top and bottom of the test fixture, and the bolts in the fixture are tightened to a specified torque to capture the test specimen. When testing lower strength materials such that untabbed CLC specimens can be used Procedure A d6461, the benefits of combined loading become particularly prominent.