https://mechcalc.net/blog/en/tags/reference-strain/ Recent content in Reference Strain on MechCalc how-to Guide https://mechcalc.net/blog/og-default.png https://mechcalc.net/blog/og-default.png Hugo en Fri, 03 Jul 2026 21:00:00 +0200 https://mechcalc.net/blog/en/posts/bs7910-clause7-fad-options/ Fri, 03 Jul 2026 21:00:00 +0200 https://mechcalc.net/blog/en/posts/bs7910-clause7-fad-options/ A walkthrough of the three assessment options of the BS 7910:2019 Clause 7 Failure Assessment Diagram (FAD): Option 1 (yield/tensile strength only), Option 2 (true stress-true strain curve), and Option 3 (elastic-plastic J-integral). The code equations and their physical reading, how the three failure assessment lines step up in data need, accuracy and conservatism, when to choose which, and the low-strain-hardening exception — with an original comparison figure and a live online calculator.