This test jig can realize the tiny bending radius test without tensile stress because test sample is kept by the 2 plates of double-joint clamshell.
Two plates keep the test sample, and then one plate operates by Rotary Reciprocation Axis. This two plates move open and close keeping each angle by the parallel link structure.
This test jig doesn't make the tensile stress occur to the test sample because rotary point at the edge of plate. If the rotary point is different position, the tensile stress or compression stress will occur to the test sample.
The sample attaching part is a removable cartridge, so the sample can be attached easily.
In addition to the standard CS jig, the twin type CS-t and the large type CS-m are available, enabling simultaneous testing of multiple samples and large samples.