Sylwia Łagan - Academia.edu (original) (raw)
Uploads
Papers by Sylwia Łagan
Advances in Intelligent Systems and Computing, 2019
The aim of the work was a characteristic of anisotropic mechanical properties of a pig's aorta. T... more The aim of the work was a characteristic of anisotropic mechanical properties of a pig's aorta. The isolated ascending, descending and thoracic aortas were taken. The longitudinal and transversal orientations of specimens taken were considered. Tissue strips were cut in the longitudinal orientation and in the transversal orientation as rings. Part of the rings was cut and indicated as the transversal strip samples, the second part in the form of rings was indicated as the transversal ring samples. The prepared samples were tested in an uniaxial tensile test. The values of the maximal force, the elongation, the ultimate tensile strength and strain at the UTS, Young's moduli and energy of destruction were estimated. The influence of orientation of samples taking was estimated. The highest values of the maximal force and the UTS were determined for the transversal ring samples and the lowest for the longitudinal strip samples.
Innovations in Biomedical Engineering, 2020
Engineering of Biomaterials, 2017
Streszczenie. W niniejszym referacie podjęto próbę analizy wpływu długości strzemion w jeździe ko... more Streszczenie. W niniejszym referacie podjęto próbę analizy wpływu długości strzemion w jeździe konnej na obciążenia powstające w kończynie dolnej. Wraz ze zmianą długości strzemion zmienia się kąt zgięcia nogi w stawie kolanowym oraz skokowym.
Advances in Intelligent Systems and Computing, 2018
The aim of this work was to compare a hyperelastic material models (Ogden and Yeoh) implemented i... more The aim of this work was to compare a hyperelastic material models (Ogden and Yeoh) implemented in ANSYS software to evaluate the experimental data obtained from uniaxial tensile test of pig’s skin taken from different location of the body (back and abdomen). The results were compared with the literature data. The effects of the simulation confirmed the possibility of using hyperelastic models to assess skin properties using FEM methods based on a static tensile test. The study reveals the need to validate results based on a wider range of data.
Skin tissue shows sensitivity to many factors resulting from its biological nature and also conne... more Skin tissue shows sensitivity to many factors resulting from its biological nature and also connected with mechanical tests conditions. The aim of the study was to analyze the influence of sex and age of the animal and conditions of samples storage on mechanical properties of porcine skin. The uniaxial tensile tests were carried out for samples taken from two different pigs and stored before the test. The basic mechanical parameters were compared. The study revealed sensitivity of the skin samples to different factors. Comparison of skin samples taken from the porker the and sow differing in age and weight showed that better substitute for the human skin for mechanical properties tested in vitro is the porker skin. The use of different storage variants exhibited similar influence of freezing and incubating in saline solution for 2 days for porker samples, and significant influence of freezing for 5 days.
The mechanical properties of a pig’s skin which is used as the human skin substitute in the studi... more The mechanical properties of a pig’s skin which is used as the human skin substitute in the studies carried out in vitro are important for a number of applications, including surgery and biomechanics. In this study, uniaxial tensile experiments were performed on porcine skin for the two directions of the samples taken (parallel and perpendicular to the spine) to investigate the tensile stress-strain response. The experimental results show that pig’s skin exhibits anisotropic and non-linear behavior. The Ogden model was adopted to describe tensile behavior of the pig’s skin. The Ogden model provides a good tensile curve fit for the animal skin tissue in the low range of deformation (first and second stage of elongation curve).
Advances in Intelligent Systems and Computing, 2019
The aim of the work was a characteristic of anisotropic mechanical properties of a pig's aorta. T... more The aim of the work was a characteristic of anisotropic mechanical properties of a pig's aorta. The isolated ascending, descending and thoracic aortas were taken. The longitudinal and transversal orientations of specimens taken were considered. Tissue strips were cut in the longitudinal orientation and in the transversal orientation as rings. Part of the rings was cut and indicated as the transversal strip samples, the second part in the form of rings was indicated as the transversal ring samples. The prepared samples were tested in an uniaxial tensile test. The values of the maximal force, the elongation, the ultimate tensile strength and strain at the UTS, Young's moduli and energy of destruction were estimated. The influence of orientation of samples taking was estimated. The highest values of the maximal force and the UTS were determined for the transversal ring samples and the lowest for the longitudinal strip samples.
Innovations in Biomedical Engineering, 2020
Engineering of Biomaterials, 2017
Streszczenie. W niniejszym referacie podjęto próbę analizy wpływu długości strzemion w jeździe ko... more Streszczenie. W niniejszym referacie podjęto próbę analizy wpływu długości strzemion w jeździe konnej na obciążenia powstające w kończynie dolnej. Wraz ze zmianą długości strzemion zmienia się kąt zgięcia nogi w stawie kolanowym oraz skokowym.
Advances in Intelligent Systems and Computing, 2018
The aim of this work was to compare a hyperelastic material models (Ogden and Yeoh) implemented i... more The aim of this work was to compare a hyperelastic material models (Ogden and Yeoh) implemented in ANSYS software to evaluate the experimental data obtained from uniaxial tensile test of pig’s skin taken from different location of the body (back and abdomen). The results were compared with the literature data. The effects of the simulation confirmed the possibility of using hyperelastic models to assess skin properties using FEM methods based on a static tensile test. The study reveals the need to validate results based on a wider range of data.
Skin tissue shows sensitivity to many factors resulting from its biological nature and also conne... more Skin tissue shows sensitivity to many factors resulting from its biological nature and also connected with mechanical tests conditions. The aim of the study was to analyze the influence of sex and age of the animal and conditions of samples storage on mechanical properties of porcine skin. The uniaxial tensile tests were carried out for samples taken from two different pigs and stored before the test. The basic mechanical parameters were compared. The study revealed sensitivity of the skin samples to different factors. Comparison of skin samples taken from the porker the and sow differing in age and weight showed that better substitute for the human skin for mechanical properties tested in vitro is the porker skin. The use of different storage variants exhibited similar influence of freezing and incubating in saline solution for 2 days for porker samples, and significant influence of freezing for 5 days.
The mechanical properties of a pig’s skin which is used as the human skin substitute in the studi... more The mechanical properties of a pig’s skin which is used as the human skin substitute in the studies carried out in vitro are important for a number of applications, including surgery and biomechanics. In this study, uniaxial tensile experiments were performed on porcine skin for the two directions of the samples taken (parallel and perpendicular to the spine) to investigate the tensile stress-strain response. The experimental results show that pig’s skin exhibits anisotropic and non-linear behavior. The Ogden model was adopted to describe tensile behavior of the pig’s skin. The Ogden model provides a good tensile curve fit for the animal skin tissue in the low range of deformation (first and second stage of elongation curve).