Press Release
USCAR Announces Composite Structure Meets U.S. Crash Safety Standards
12/09/96
USCAR Successfully Crashes Composite Structure DEARBORN, Mich., Dec. 5 -- The American automakers reached a milestone in developing advanced, environmental technology by meeting government crash-safety standards with a lightweight, composite front-end structure designed for mass production. The test was performed by the U.S. Council for Automotive Research (USCAR), which manages collaborative research of Chrysler Corp., Ford Motor Co. and General Motors Corp. Through USCAR, the automakers hope to leverage their strengths, speed technical development and better respond to environmental and societal issues. The accomplishment marks the first time the government safety criteria for a 35 mile-per-hour frontal barrier crash test were met with a production-feasible composite design. The composite parts weigh 25 percent less than the steel parts they replaced on the test vehicle. "Working together, we were able to develop state-of-the-art technology suggesting composites can be designed to function in crashes as well as traditional steel," said Mark Botkin, USCAR's Automotive Composites Consortium's (ACC) project leader and GM principal research engineer. "Individually, it probably would have taken us three times as long to reach this milestone," adds Richard Jeryan, Ford technical specialist. Composite material is both strong and lightweight, making it an attractive option for building vehicles that could reduce emissions and require less gasoline. However, the raw material is expensive and efficient manufacturing methods need to be developed. The test vehicle's front end performed as USCAR engineers expected in a "controlled crush," explained Botkin, while traditional metals buckle and fold in a crash, structural composites -- made of polymers reinforced with glass fibers -- fracture and crumble. The crash performance of the front structural components is crucial to the safety of passengers. The vehicle's structure acts as the skeleton of the automobile. Although some current vehicles might have composite body panels and fender -- the "skin" of a car -- composites are not used in any primary structural applications. The USCAR project builds on an earlier Ford study that successfully crashed a composite front end, but that structure was not built using production feasible processes. In that project, the fibers used in the composite material were arranged by hand. To improve manufacturing efficiency, the American automakers jointly developed innovative, time-saving processes to arrange fibers in composite components. "While this is a significant accomplishment, we're still in the early stages of development of structural composites for high volume manufacturing," explained Doug Denton, senior materials specialist at Chrysler. "We received significant input from the supplier community for this project and we still need its expertise as we continue to develop safe, reliable composites for mass production," Jeryan said. Exel Pattern Works in Dearborn, Mich. molded the components. Other involved suppliers include Atkins & Pearce, Covington, Ky.; The Budd Co., Auburn Hills, Mich.; Dow Chemical Company, Midland, Mich.,; GenCorp Automotive, a subsidiary of Cambridge, Madison Heights, Mich.; ICI Polyurethanes, Troy, Mich.; MFG Products, Ashtabula, Ohio; Owens Corning, Toledo, Ohio; Troy Tooling, Troy, Mich.; and Vetrotex Certainteed, Toledo, Ohio. Working with another USCAR consortium, the Supercomputing Automotive Applications Partnership (SCAAP), and several federal laboratories, computer crash prediction models are being developed with data on various composite materials and structural designs. Accurate models will speed the development of emerging composites technology. USCAR's next major composites project is addressing the challenges of manufacturing speed, quality and cost. Working with Textron Automotive and Magna International, USCAR has a goal to demonstrate the improvement of composite processes by producing pick-up truck boxes and tailgates in four minutes. The process currently takes more than 1O minutes. USCAR currently is planning a third major composites project that will combine the primary challenges of the first two projects -- crash energy management and manufacturing feasibility.