View Picture Frame Shear Test Fixture Background. Results of picture frame shear tests with optical registration of the strain fields are presented for glass (plain and twill, three types) and glass/pp woven (plain and twill) fabric reinforcements for composite materials. Beyond sandwich panel testing, an even greater motivation for picture frame fixture development is its utility in determining the shear properties of dry reinforcement fabrics and uncured fabric prepregs.
Test fixtures can be found when testing electronics, software and physical devices.
The picture frame shear test fixture in its various forms has been around for many years. An example problem showing you how to draw shear and moment diagrams for a structural frame. The frame has four legs which are hinged to form a picture frame. Frathgeber) i often have a use case like the following contrived example:
