The assessment of fracture behaviour of ferritic/ferritic martensitic steels in Ductile to Brittle Transition (DBT) region iscrucial for shallower cracks. In this work the fracture behavior of In-RAFM steels isinvestigated with systematically varying a/W using Master Curve approach. This a/W effect is investigated using σ∗-V∗approach by calculating the active volume at simulated crack front. It is observed that the fitting parameter of σ∗-V∗approach is in direct correlation with changing constraint parameter ΔT stress
. The constraint effect... (More)
The assessment of fracture behaviour of ferritic/ferritic martensitic steels in Ductile to Brittle Transition (DBT) region iscrucial for shallower cracks. In this work the fracture behavior of In-RAFM steels isinvestigated with systematically varying a/W using Master Curve approach. This a/W effect is investigated using σ∗-V∗approach by calculating the active volume at simulated crack front. It is observed that the fitting parameter of σ∗-V∗approach is in direct correlation with changing constraint parameter ΔT stress
. The constraint effect with varying crack depth is also captured by a novel constraint parameter referred as Weibull triaxiality.
@article{5a3d35ad-0299-4ac5-a014-7e473ede042f,
abstract = {{<p><br>
The assessment of fracture behaviour of ferritic/ferritic martensitic steels in Ductile to Brittle Transition (DBT) region iscrucial for shallower cracks. In this work the fracture behavior of In-RAFM steels isinvestigated with systematically varying a/W using Master Curve approach. This a/W effect is investigated using σ∗-V∗approach by calculating the active volume at simulated crack front. It is observed that the fitting parameter of σ∗-V∗approach is in direct correlation with changing constraint parameter ΔT <br>
<sub>stress</sub><br>
. The constraint effect with varying crack depth is also captured by a novel constraint parameter referred as Weibull triaxiality. <br>
</p>}},
author = {{Tiwari, Abhishek and Singh, R. N. and Ståhle, Per and Chakravartty, J. K.}},
issn = {{2452-3216}},
keywords = {{separated by semicolons; Type your keywords here; Loss of constraint; crack depth; transition temperature}},
language = {{eng}},
month = {{01}},
pages = {{690--696}},
publisher = {{Elsevier}},
series = {{Procedia Structural Integrity}},
title = {{A loss of constraint assessment using δ∗-π∗approach to describe the effect of crack depth on reference transition temperature T0}},
url = {{http://dx.doi.org/10.1016/j.prostr.2016.06.089}},
doi = {{10.1016/j.prostr.2016.06.089}},
volume = {{2}},
year = {{2016}},
}