%0 Journal Article %A S. R. Hosseini and N. Choupani and A. R. M. Gharabaghi %D 2008 %J International Journal of Civil and Environmental Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 17, 2008 %T Experimental Estimation of Mixed-Mode Fracture Properties of Steel Weld %U https://publications.waset.org/pdf/4472 %V 17 %X The modified Arcan fixture was used in order to investigate the mixed mode fracture properties of high strength steel butt weld through experimental and numerical analysis. The fixture consisted of a central section with "butterfly-shaped" specimen that had central crack. The specimens were under pure mode I (opening), pure mode II (shearing) and all in plane mixed mode loading angles starting from 0 to 90 degrees. The geometric calibration factors were calculated with the aid of finite element analysis for various loading mode and different crack length (0.45≤ a/w ≤0.55) and the critical fracture loads obtained experimentally. The critical fracture toughness (KIC & KIIC) estimated with experimental and numerical analysis under mixed mode loading conditions. %P 86 - 91