![]() SEE IT ON TWITTER Concrete? There's no opportunities for improvement there, right? WRONG! Today's materials engineers influence all manufacturing - even on materials created 2500 years ago. SEE IT ON TWITTER Tesla has taken delivery of the world's largest casting machine, which will consolidate 70 parts into one casting. Join us for this free virtual event from Precision Metalforming Association and SEE IT ON TWITTER I'm teaming up with Eren Billur (畢艾隆) to present an overview of Recent Developments in Warm/Hot Stamping. SEE IT ON TWITTER Join us Tuesday, 5 October for this free webinar and learn about the recent developments in press hardening steels and warm/hot forming of aluminum alloys! SEE IT ON TWITTER Congratulations to Jayanth Chintamani and colleagues at ArcelorMittal for the successful development of #3rdGen #steel used in the upcoming Ford Motor Company Bronco! 980MPa + 20% elongation = great combo! SEE IT ON TWITTER Great article written by Eren Billur (畢艾隆) on the history of press hardening steels in automotive applications within. You will learn so much, and gain an appreciation for ![]() ![]() SEE IT ON TWITTER An excellent read, and if anyone want to know more about auto body construction, you should follow Daniel Perez. SEE IT ON TWITTER And check out for a plethora of information about Advanced High Strength Steels! Brought to you by SEE IT ON TWITTER Build Confidence and Skill for better Production and Business Results Self Assessment is Critical During Challenging Times Schmid (2014), Manufacturing Engineering and Technology (6th ed. Where “s” and “e” are the engineering stress and strain, respectively, and “ σ ” and “ ε ” are the true stress and strain, respectively. Additionally, you can convert an engineering stress-strain curve into a true stress-strain curve in the region between the yield point and UTS with the equations: References and Further Reading 1 Kalpakjian, Serope and Steven R. The relationships between engineering values and true values are: In circle grid analysis, engineering strain is the percent expansion of the circle compared to the initial diameter of the circle. It is, however, a much better representation of how the material behaves as it is being deformed, which explains its use in forming simulations. Unless thickness and width are being monitored continuously during the test, you cannot calculate true stress. At any load, the true stress is the load divided by the cross-sectional area at that instant. While you are pulling, the length increases, but the width and thickness shrink. At any load, the engineering stress is the load divided by this initial cross-sectional area. It’s easy to measure these, since it is your starting material. But what cross section are you considering? Before starting that pull, the bar had a known cross-section of, let’s say, 0.5″ wide x metal thickness. Load divided by cross-sectional area is force, or stress. ![]()
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