BIFMA Incremental Weights is designed specifically for BIFMA X5.1. Mainly used to assist the office chair backrest dynamic test when the load on the seat surface.
Smaller seat loading pad, which is a rigid circular object 200 mm in diameter, the loading surface of which has a convex spherical curvature of 300 mm radius with a 12 mm front edge radius.
Back loading pad, which is a rigid rectangular object 200 mm high and 250 mm wide, the loading surface of which is curved across the width of the pad with a convex cylindrical curvature of 450 mm radius and with a 12 mm radius on all front edges.
The seat impactor is comprised of the following elements, circular body, springs and striking surface. Is the necessary accessories for seat impact test.
Impact hammer, with a cylindrical pendulum head having a mass of 6,5 kg, supported from a pivot by a steel tube of 38 mm in diameter and with a wall thickness of 2 mm.
This load pad is designed specifically for BIFMA X5.1, which is a rigid rectangle object 102×50 mm in dimension ,with a 12 mm front edge radius. Mainly used to test the office chair pedal static load and durability.
The purpose of this test is to determine: (1) retention of load bearing (65 % IFD), (2) a loss in thickness, and (3) structural breakdown as addressed by visual inspection. This procedure describes tests that evaluate the specimen by repeatedly deflecting the carpet cushion by a 152 mm diameter and 152 mm wide rubber covered roller exerting a force of 266±5N on the test specimens.