Determination of the Mechanical Properties of Skin Using Quasi- Static Biaxial Testing PDF Download

Author: Kenneth B. Cordio
Publisher:
ISBN:
Category : Axial loads
Languages : en
Pages : 294

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Author: Ramya Srinivasan
Publisher:
ISBN:
Category :
Languages : en
Pages :

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In this research, biaxial tests are performed on 12 pieces of abdomen skin specimen from rats. The results show that skin possesses anisotropy, non-linearity and hysteresis. To explain the stress-strain relationship in terms of the strain-energy function the material constants are determined from the experiments and comparison between the theoretical and experimental result shows a high correlation. These results may provide an insight into better understanding skin’s mechanical properties In this research, biaxial tests are performed on 12 pieces of abdomen skin specimen from rats. The results show that skin possesses anisotropy, non-linearity and hysteresis. To explain the stress-strain relationship in terms of the strain-energy function the material constants are determined from the experiments and comparison between the theoretical and experimental result shows a high correlation. These results may provide an insight into better understanding skin’s mechanical properties. .

Author: Nishamathi Kumaraswamy
Publisher:
ISBN:
Category :
Languages : en
Pages : 208

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Breast cancer is one of the most frequently diagnosed cancers affecting women in the United States. An ongoing objective of many research groups is to develop a biomechanical breast model for different applications, ranging from surgical outcome predictions for patients undergoing breast reconstruction surgery, to image registration for planning plastic surgery. Achieving the goal of developing a physics based biomechanical model of the human breast requires the determination of material properties of the various tissues constituting the breast. The objective of this thesis is to develop an appropriate hybrid experimental-numerical technique to enable the calibration of material parameters of skin for different constitutive models (commonly used for skin). The quantification of the material parameters thus obtained validates the bulge test method to be used in testing soft tissue specimens like skin. A bulge test device was custom-built for this work; it consists of a pressure chamber, two digital cameras, and a syringe pump as its main components. The syringe pump provides a constant flow rate of water into the pressure chamber and results in the bulging of specimens with a diameter between 45 mm and 80 mm. Three-dimensional Digital Image Correlation technique is used to obtain full field displacement measurements of the three dimensional shape of the bulge. Tests were performed on commercial rubber sheets of different thickness and on porcine skin specimens; in these tests, the bulge shape was measured at monotonically increasing and decreasing pressure levels, as well as during cyclic loading allowing determination of the deformation and strain fields over the specimen surface. In order to extract the material properties, a hybrid experimental-numerical method was used: the experiment was modeled numerically using the finite element analysis software Abaqus, imposing the commonly used Mooney-Rivlin model for isotropic materials and the Gasser-Ogden-Holzapfel model for anisotropic materials. A comparison between the experimentally measured and numerically simulated bulge shapes was used to determine the optimized material parameters under biaxial loading conditions over a large range of stretch levels.

Author: Xituan Shang
Publisher:
ISBN: 9781109851298
Category :
Languages : en
Pages : 89

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In this research, dynamic biaxial tests were performed on 16 pieces of abdominal skin specimen from rats. Typical biaxial stress-strain responses show that skin possesses anisotropy, nonlinearity and hysteresis. To describe the stress-strain relationship in forms of strain energy function, the material constants of each specimen were obtained and the results show a high correlation between theory and experiments.

Author: P. F. Millington
Publisher: Cambridge University Press
ISBN: 9780521241229
Category : Medical
Languages : en
Pages : 250

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First published in 1983 this book provides a review of the fundamentals of the biology and mechanics of human skin. The major theme is the interaction between and dependence of the integrity of skin on, cell turnover, nutrition, control mechanisms and disease. Mechanical, thermal and electrical properties are presented separately in a way that should allow the mathematically inexperienced reader to understand the principles but with sufficient detail to permit development of more advanced ideas. Discussion of environmental effects on skin includes cosmetics, solar radiation and clinical treatments. An account of methods of wound closure and of the recent attempts to find a substitute for skin completes an overview of this fascinating tissue.

Author: Ghassan S. Kassab
Publisher: Springer
ISBN: 1489976302
Category : Science
Languages : en
Pages : 491

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This book portrays the commonality of tissue micro-structure that dictates physiological function in various organs (microstructure-function relation). Tissue and organ models are used to illustrate physiological functions based on microstructure. Fiber scale properties such as orientation and crimp are described in detail. Structurally-based constitutive models are given throughout the book, not only to avoid ambiguities in material characterization, but also to offer insights into the function, structure, and mechanics of tissue components. A statement of future directions of the field is also given, including how advancements, such as state-of-the-art computational modeling and optical measurements of tissue/cells structures, are taking structure-based modeling to the next level. This book also: Provides a comprehensive view of tissue modeling across multiple systems Broadens readers’ understanding of state-of-the-art computational modeling and optical measurements of tissue/cells structures Describes in detail fiber scale properties such as orientation and crimp

Author: Bernardo Innocenti
Publisher: Academic Press
ISBN: 0128244828
Category : Technology & Engineering
Languages : en
Pages : 759

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Human Orthopaedic Biomechanics: Fundamentals, Devices and Applications covers a wide range of biomechanical topics and fields, ranging from theoretical issues, mechanobiology, design of implants, joint biomechanics, regulatory issues and practical applications. The book teaches the fundamentals of physiological loading and constraint conditions at various parts of the musculoskeletal system. It is an ideal resource for teaching and education in courses on orthopedic biomechanics, and for engineering students engaged in these courses. In addition, all bioengineers who have an interest in orthopedic biomechanics will find this title useful as a reference, particularly early career researchers and industry professionals. Finally, any orthopedic surgeons looking to deepen their knowledge of biomechanical aspects will benefit from the accessible writing style in this title. Covers theoretical aspects (mechanics, stress analysis, constitutive laws for the various musculoskeletal tissues and mechanobiology) Presents components of different regulatory aspects, failure analysis, post-marketing and clinical trials Includes state-of-the-art methods used in orthopedic biomechanics and in designing orthopedic implants (experimental methods, finite element and rigid-body models, gait and fluoroscopic analysis, radiological measurements)

Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 616

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Author:
Publisher:
ISBN:
Category : Biomedical engineering
Languages : en
Pages : 568

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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702

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