Kartik Josyula

Mechanical behavior of full-thickness burn human skin is rate-independent

Samara Gallagher, Kartik Josyula, R. Rahul, Uwe Krüger et autres

Skin tissue is recognized to exhibit rate-dependent mechanical behavior under various loading conditions. Here, we report that the full-thickness burn human skin exhibits rate-independent behavior under uniaxial tensile loading conditions. Mechanical properties, namely, ultimate tensile stress, ultimate tensile strain, and toughness, and …

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A statistical machine learning approach linking molecular conformational changes to altered mechanical characteristics of skin due to thermal injury

Uwe Krüger, Kartik Josyula, R. Rahul, Melanie Krüger et autres

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Synthetic tissues lack the fidelity for the use in burn care simulators

Vanessa Hannay, F.N.U. Rahul, Kartik Josyula, Uwe Krüger et autres

This work compares the mechanical response of synthetic tissues used in burn care simulators from ten different manufacturers with that of ex vivo full thickness burned porcine skin as a surrogate for human skin tissues. This is of high practical importance since …

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Thermally damaged porcine skin is not a surrogate mechanical model of human skin

Samara Gallagher, Uwe Krüger, Kartik Josyula, R. Rahul et autres

Porcine skin is considered a de facto surrogate for human skin. However, this study shows that the mechanical characteristics of full thickness burned human skin are different from those of porcine skin. The study relies on five mechanical properties obtained from uniaxial …

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In silico study of α-γ phase transformation in hexahydro-1,3,5-trinitro-1,3,5-triazine

Kartik Josyula, Rahul, Suvranu De

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In Silico Study of α-γ Phase Transformation in RDX: Processed Data

Kartik Josyula

Processed data used to analyze the MD study of α-γ Phase Transformation in RDX. This data is created from statistical averaging of the crystallographic parameters, energy terms of SB potential, and wag angles calculated from atomic positions of various RDX molecules. The …

A level set approach for shock-induced $$\upalpha $$ α – $$\upgamma $$ γ phase transition of RDX

Kartik Josyula, Suvranu De

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Quasi-static response and texture evolution of α- and γ-RDX: a comparative study

Kartik Josyula, Rahul, Suvranu De

In this paper, we undertake a comparative study of the stress–strain response and slip activity of α- and γ-polymorph of hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) under pressure loading using a rate-dependent single-crystal plasticity model. Texture evolution studies are performed to further understand the effects of …

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Thermomechanical properties and equation of state for the γ-polymorph of hexahydro-1,3,5-trinitro-1,3,5-triazine

Kartik Josyula, Rahul Rahul, Suvranu De

This work predicts the elastic modulus tensor, equation of state, and coefficients of thermal expansion at all stable thermodynamic states for γ-RDX. The work provides substantial material information for continuum modeling of RDX.

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Biofilm Fixed Film Systems

Kartik Josyula, Hong Liu, Jiaming Liang, Robert E. Lerner et autres

The work reviewed here was published during 2009 and describes research that involves biofilms treating pollutants. The review is divided into the following sections: biofilm measurement and characterization, biofilm reactors, microbial fuel cells and biofilm models.

Agricultural Wastes

Xuejiao Yang, Keisuke Ikehata, Robert E. Lerner, Yue Hu et autres

This review summarizes the literature related to agricultural wastes published during 2009. The review is divided into the following sections: waste characterization, waste management and pollution minimization, waste treatment, and waste recycle and reuse.

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