Product Code:SAE J1454 Title:Dynamic Durability Testing of Seat Cushions for Off-Road Work Machines Issuing Committee:Hftc4, Operator Seating And Ride Scope:This SAE Standard describes a laboratory test procedure for comparatively evaluating the durability and fatigue life qualities of a complete seat cushion by submitting the seating surface of the cushion to repetitive compressive and rotational loading with a simulated human buttocks.