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The ASTM D7078 Rail Shear Fixture is used to test composite materials. Many people have questions on whether to use the D5379 Iosipescu shear test or the D7078 rail shear test. It depends on how flimsy and flexible the material is. If it is a flexible material, D7078 is ideal. If the sample is more rigid and sturdy, the D5379 shear fixture is more applicable.
The D7078 fixture ships complete with nylon alignment guides and adapters to fit onto any universal testing machine. Universal Grip also supplies and supports a full line of testing machines from Galdabini of Italy.
