CSI-1 (Seam Fatigue Tester )
The CSI Seam Fatigue Tester is used for determining the ability of a vinyl, polymeric film covered seating fabric, or similar material, to resist tearing, or needle hole elongation at a sewn seam, under controlled conditions.

The apparatus includes:

Two independent test stations.
Clip type sample clamps for each station.
Clamp width: 50-mm.
Gap between clamps: 140-mm.
Chuck, sample clamp holder for each station.
Test Weight: 3 kilograms
Cycle Rate: 30 CPM
Predetermine cycle counter, stops test automatically at completion of test-preset number of cycles.

Reference:
Ford Lab. Test Method BN-106-02 Seam Fatigue Testing