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Research programs conducted at Calspan to improve structural crashworthiness of subcompact cars are described. In two separate but related investigations, front structural designs intended to improve crash energy management were developed and adapted to a Datsun 510 and Chevrolet Vega. The prototype structure developed for the Datsun 510 was nominally consistent with present production manufacturing techniques and did not interfere with normal packaging requirements. This prototype design was evaluated through a series of 50 MPH (80 km/hr) flat barrier tests. Excellent passenger compartment integrity and crash energy management was demonstrated for this prototype automobile. The structural system developed for the Chevrolet Vega was similar in concept to that of the Datsun; but manufacturing requirements were relaxed in this effort.

A comprehensive strategy for applying quasi-static and dynamic tests in the development of automobile side impact protection systems is presented. The approach is geared towards providing an understanding of how vehicle components relate to occupant protection as measured by the FMVSS 214 dynamic side impact test. These test methods are viewed as being complimentary, rather than competitive, tools to be employed in the overall strategy. The approach begins with obtaining detailed data from an FMVSS 214 dynamic test. Additional instrumentation is required so that the results of the test can be used to form the basis for setting conditions for subsequent quasi-static and dynamic tests. The Composite Test Procedure (CTP) is an integral part of the process. As described here, the CTP can be conducted under three different methods; three step procedure, continuous computer control, and continuous manual control.