Blar i NTNU Open på forfatter "Tomstad, Asle Joachim"
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Ductile fracture of aluminium alloys in the low to moderate stress triaxiality range
Tomstad, Asle Joachim (Doctoral theses at NTNU;2022:150, Doctoral thesis, 2022)This thesis investigates the effect of constituent particles on ductile fracture in 6000-series aluminium alloys in the low to moderate stress triaxiality range. In Part 1, tension tests on smooth and notched specimens ... -
Effects of constituent particle content on ductile fracture in isotropic and anisotropic 6000-series aluminium alloys
Tomstad, Asle Joachim; Thomesen, Susanne; Børvik, Tore; Hopperstad, Odd Sture (Peer reviewed; Journal article, 2021)Tension tests on smooth and notched specimens were conducted for four 6000-series aluminium alloys to assess the effects of constituent particles on ductile fracture at different stress states. Two of the alloys are ... -
Influence of particle content on the ductility of extruded non-recrystallized aluminium alloys subjected to shear loading
Tomstad, Asle Joachim; Frodal, Bjørn Håkon; Børvik, Tore; Hopperstad, Odd Sture (Peer reviewed; Journal article, 2022)In-plane shear tests were conducted on two extruded 6000-series aluminium alloys to investigate the influence of constituent particles on ductile fracture. The two alloys have previously been characterized and found to ... -
Modelling and simulation of ductile fracture in aluminium alloys
Tomstad, Asle Joachim (Master thesis, 2017)Reversed loading test were conducted on diablo specimens. The samples were first run in compression, before loaded in tension until fracture. The compression ranged from 0 to 40% pre-compression, in 10% increments. The ... -
Simulation of ductile fracture in aluminium alloys with random or strong texture using heuristic extensions of the Gurson model
Thomesen, Susanne; Tomstad, Asle Joachim; Børvik, Tore; Hopperstad, Odd Sture (Peer reviewed; Journal article, 2022)Ductile fracture of two high-strength aluminium alloys in temper T6 is investigated using heuristic extensions of the Gurson model with non-quadratic yield criteria. Simulations of tensile tests on smooth and notched ...