Abstract: An apparatus and method for impact testing of vehicle components at a sub-system level includes a mobile unit and a vehicle sub-system. In an exemplary application, the vehicle sub-system includes a steering column and steering shaft. The vehicle steering column is securely mounted to the mobile unit and a mass element is secured to the steering shaft. By advancing the mobile unit into a rigid barrier at a predetermined speed, full-scale column collapse and energy absorption tests can be accurately analyzed at a significantly reduced cost and time.

Abstract: An energy absorbing member for use in an automobile to absorb occupant impact forces. The energy absorbing member includes a hollow membrane defining a cushion with a plurality of chambers. The membrane includes walls defining the chambers and orifices hydraulically interconnecting the plurality of chambers to equalize fluid pressure within each of the chambers and dissipate impact forces acting on the membrane by conveying fluid between the plurality of chambers when the energy absorbing member is moved from an initial state to a collapsed state. The cushion contains a constant amount of fluid as the energy absorbing member is moved from the initial to collapsed states.

Abstract: An energy absorbing device for materially reducing steering column motion resulting from passenger compartment intrusion in an automotive vehicle when the powertrain impacts rearward vehicle portions in a frontal collision. The energy absorbing device comprises a bracket in the form of a generally box-shaped frame having side panels and a top panel. The side panels and top panel have openings defining upper and lower struts. The struts are made of a relatively stiff, bendable, flexible material capable of controlled deformation when the powertrain impacts-the rearward vehicle portions in a frontal collision.