Test Fixtures for ASTM C1469 Model: G-ASTM-C1469

This standard governs the Shear Strength of Joints in Advanced Ceramics via the notched beam method. From an engineering perspective, the joint interface is often the weakest link in ceramic assemblies. The test utilizes a four-point bending configuration on a specimen with two staggered notches. The MTO Advantage lies in our high-stiffness frames; since ceramics exhibit negligible plastic deformation, any frame compliance can store elastic energy that shatters the specimen, obscuring the precise shear failure point. Our systems utilize ultra-fast data sampling (up to 5kHz) to capture the exact load-drop corresponding to interfacial shear. Furthermore, alignment is critical—if the notches are not perfectly coplanar with the loading points, parasitic tensile stresses will cause a wing crack failure rather than a pure shear displacement. We recommend using our laser-aligned fixture base to ensure the +/- 0.02 mm tolerance required for valid data.