NIST develops test to cut die design costs.

Position::News & analysis - Brief Article

A one-of-kind test equipment is being developed by National Institute of Standards and Technology (NIST) researchers to stamp out costly, delay-causing errors in the design of dies used to make sheet metal parts ranging from car hoods to airplane wings to pots, pans, and cans.

The U.S. auto industry alone is estimated to spend more than $700 million a year on designing, testing, and correcting new dies for its latest models, each contains about 300 stamped parts shaped by dies and presses. About half of the total goes to remedying unanticipated errors--manifested as wrinkles, splits, excessive thinning, or other defects.

By fitting NIST's metal-stamping test station with an X-ray stress measurement system, NIST's materials scientists now can make detailed maps of stresses and strains as sheets of steel and other metals are punched, stretched, or otherwise shaped. The system can measure stress and strain behavior in many different directions while the sheet is being...

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