Volume 1, 2009DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
|Page(s)||779 - 783|
|Published online||15 September 2009|
Force based analysis on the instrumented Charpy impact and its industrial applicationJ. Fang and F.L. Ding
Baosteel Research Institute, Baoshan Iron and Steel Co., Ltd., 201900 Shanghai, China
Published online: 15 September 2009
By determination of characteristic loading points from the instrumented impact testing curve and with the combination of the quasi static tensile test, a series of dynamic testing parameters including estimated PSF, σyd, Fgy/Fm, Ju, J/σyd related to the Force Based Analysis method have been introduced in the study. As a key point to evaluate the dynamic flow yield stress, the confused loading criteria of General Yield point is here clearly marked at the intersection of the steeply rising part of second peak of the force-deflection and KC curves. Moreover, an illustration of FBA method applied to the samples with the same Absorbed Impact Energy, Et, but the distinct Percentage of Shear Fracture, PSF values was discussed in detail as necessary complements for extending the conventional Charpy impact testing into a comprehensive evaluation of the fracture toughness, also revealing the intrinsic fracture mechanism of metals.
© EDP Sciences 2009