Engineering stress–engineering strain curves are developed using initial gage length and initial cross-sectional area of the specimen.

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The major acquisition of new knowledge and experience needed for forming higher strength steels in general has been gained gradually over the years with ever-increasing strengths available in the HSLA grades. Now new demands for improved crash performance, while reducing mass and cost, have spawned a new group of steels that improve on the current conventional base of HSS. But these new grades do not depart radically from the forming principles of their older sisters.

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Dynamic tensile testing of sheet steels is becoming more important due to the need for more optimized vehicle crashworthiness analysis in the automotive industry. However, no guidelines are available as to the testing method, specimen dimensions, measurement devices, and other important issues which are critical to the quality of testing results. As a result, data from different laboratories are often not comparable. Quality of the testing data is, in general, not satisfactory. Signal damping and curve smoothing are often necessary to make the testing data usable.

With the increasing needs for tensile steel stress-strain data at dynamic conditions, WorldAutoSteel pursued the development of a Recommended Practice for Dynamic Tensile Testing for Sheet Steels. Click more to learn about the process for developing this Recommended Practice and to read the final results.

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