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A loss of constraint assessment using δ∗-π∗approach to describe the effect of crack depth on reference transition temperature T0

Tiwari, Abhishek ; Singh, R. N. ; Ståhle, Per LU and Chakravartty, J. K. (2016) 21st European Conference on Fracture, ECF 2016 In Procedia Structural Integrity 2. p.690-696
Abstract


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.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
separated by semicolons, Type your keywords here, Loss of constraint, crack depth, transition temperature
in
Procedia Structural Integrity
volume
2
pages
7 pages
publisher
Elsevier
conference name
21st European Conference on Fracture, ECF 2016
conference location
Catania, Italy
conference dates
2016-06-20 - 2016-06-24
external identifiers
  • scopus:85065775258
ISSN
2452-3216
DOI
10.1016/j.prostr.2016.06.089
language
English
LU publication?
yes
id
5a3d35ad-0299-4ac5-a014-7e473ede042f
date added to LUP
2019-06-04 09:49:40
date last changed
2022-01-31 21:25:47
@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}},
}