Test Fixtures for ASTM D3410 Model: G-ASTM-D3410

Standard for Compressive Properties of Polymer Matrix Composite Materials using the shear loading method (IITRI or Celanese fixtures). Because composites tend to broom or buckle in compression, we must apply the load through shear in the grips. MTO provides the heavy-duty IITRI fixture, which uses massive wedge blocks to prevent specimen buckling. The technical focus is on Gauge Section Uniformity. Our software monitors dual-sided strain gauges to ensure the specimen isn’t bowing, which is a mandatory check for valid aerospace compression data.