Test Fixtures for ASTM D3039 Model: G-ASTM-D3039

The global benchmark for Tensile Properties of Polymer Matrix Composite Materials. This standard is the primary driver for MTO’s high-force (100kN+) frame sales. The technical challenge is the load introduction; because composites are sensitive to transverse crushing, we utilize hydraulic wedge grips with fine-cut serrated faces. Alignment is the critical Engineer-to-Engineer metric—bending must be kept below 5% to ensure a valid failure. MTO recommends using our integrated strain-gauge data acquisition to monitor real-time alignment. The result is the ultimate tensile strength and Poisson’s ratio, which are the foundational inputs for any aerospace structural FEA model.