Compression Fixtures for Axial Load Testing of Rigid Specimens

Description

Compression fixtures are used with universal testing machines to apply axial compressive loads in a controlled and aligned setup. The standard configuration uses flat compression platens made from precision-machined steel, which support even force transfer across the specimen surface.

For higher accuracy or high-force applications, one of the platens may include a spherical seat to help align the loading surface with the specimen and reduce off-axis loading. Additional fixture formats, such as compression cages or four-post assemblies, are used for testing larger specimens, including foam blocks, packaging materials, and structural components, where specimen stability during loading is important.

These fixtures are produced in various sizes and capacities for use with plastics (ASTM D695), concrete cubes, metals, composites, and paperboard materials. They are commonly used in materials testing laboratories, construction quality control, and packaging evaluation to support consistent compressive strength measurements.

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