caa a22 4500 469123850 CHVBK 20180323133146.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF00032699 doi (NATIONALLICENCE)springer-10.1007/BF00032699 Finite element analysis of a laser-processed fracture specimen [Elektronische Daten] [George Laird II, James Rawers] Finite element analysis was used to simulate the static failure of a AISI 4140, three-point bend, Charpy specimen. Non-linear finite element models (FEM) were constructed to represent standard Charpy, fatigue-precracked Charpy, and laser-processed Charpy specimens. For the laser-processed Charpy FEM, a strain-based failure criterion was used to simulate crack propagation through the 0.5 mm thick laser-processed zone. For comparison, a 0.5 mm long crack was used in the fatigue-precracked FEM and similarly loaded. Results showed that the numerically calculated load for crack initation through this zone compared favorably to that reported in earlier experiments. Furthermore, after the crack had propagated through the laser-processed zone within the FEM-comparison of plastic strain contours for this model and that for a fatigue-precracked model showed that similar patterns exist around the crack tip. These results indicate that laser-processing and fatigue-precracking should provide a similar basis for fracture toughness measurements. Kluwer Academic Publishers, 1992 Laird II George Albany Research Center, U.S. Bureau of Mines, 97321, Albany, Oregon, USA aut Rawers James Albany Research Center, U.S. Bureau of Mines, 97321, Albany, Oregon, USA aut International Journal of Fracture Kluwer Academic Publishers 53/1(1992-01-01), 91-99 0376-9429 53:1<91 1992 53 10704 https://doi.org/10.1007/BF00032699 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00032699 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Laird II George Albany Research Center, U.S. Bureau of Mines, 97321, Albany, Oregon, USA aut NATIONALLICENCE 700 1- Rawers James Albany Research Center, U.S. Bureau of Mines, 97321, Albany, Oregon, USA aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 53/1(1992-01-01), 91-99 0376-9429 53:1<91 1992 53 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer