We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Automatic CT-based finite element model generation for temperature-based death time estimation: feasibility study and sensitivity analysis.
- Authors
Schenkl, Sebastian; Muggenthaler, Holger; Hubig, Michael; Erdmann, Bodo; Weiser, Martin; Zachow, Stefan; Heinrich, Andreas; Güttler, Felix; Teichgräber, Ulf; Mall, Gita
- Abstract
Temperature-based death time estimation is based either on simple phenomenological models of corpse cooling or on detailed physical heat transfer models. The latter are much more complex but allow a higher accuracy of death time estimation, as in principle, all relevant cooling mechanisms can be taken into account. Here, a complete workflow for finite element-based cooling simulation is presented. The following steps are demonstrated on a CT phantom: For the first time in FE-based cooling time estimation, the steps from the CT image over segmentation to FE model generation are performed semi-automatically. The cooling time calculation results are compared to cooling measurements performed on the phantoms under controlled conditions. In this context, the method is validated using a CT phantom. Some of the phantoms' thermodynamic material parameters had to be determined via independent experiments. Moreover, the impact of geometry and material parameter uncertainties on the estimated cooling time is investigated by a sensitivity analysis.
- Subjects
DEATH; PHENOMENOLOGICAL aesthetics; HEAT transfer; SENSITIVITY analysis; FINITE element method
- Publication
International Journal of Legal Medicine, 2017, Vol 131, Issue 3, p699
- ISSN
0937-9827
- Publication type
Article
- DOI
10.1007/s00414-016-1523-0