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[354] Artykuł: On the influence of one-point-bend impact test parameters on dynamic stress intensity factor variationCzasopismo: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing Tom: 234-236, Strony: 838-841ISSN: 0921-5093 Wydawca: ELSEVIER SCIENCE SA LAUSANNE, PO BOX 564, 1001 LAUSANNE, SWITZERLAND Opublikowano: Sierpień 1997 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 0 Klasyfikacja Web of Science: Article; Proceedings Paper ![]() ![]() ![]() ![]() Keywords: dynamic fracture toughness  dynamic stress intensity factor  instrumented impact test  one-point-bending  |
Mathematical model of the specimen deformation during one-point-bend impact test is proposed. Using mode superposition technique, a closed form solution for dynamic stress intensity factor (DSIF) variation with time is derived. Parameters used in this formula are determined for plane stress finite element model of the specimen. Theoretical DSIF-time curve is compared with experimental one registered by Bo[uml ]hme and Kalthoff using caustics method. Influence on DSIF of the specimen geometry parameters and specimen-striker contact stiffness is investigated. It is shown that increasing of contact stiffness causes increasing DSIF growth rate. Increasing crack relative depth and/or specimen length leads to higher maximum DSIF values.