The tensile properties of wood, adhesives and fasteners can be determined using a range of specialized fixtures. Each device has been designed to meet a particular standard.
Principle of Operation
Tensile properties of wood can be determined using wedge-action grips or special shoulder loading grips.
Shoulder-loading is also used to assess adhesive properties in tension using specially prepared specimens.
The withdrawal force of screws and nails uses specially designed tooling to grip the fastener.