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Human skin is a complex multi-layer material. Many existing numerical skin models accurately simulate several of its complex mechanical characteristics. However, few models simulate wrinkling - a phenomenon common to all human skin. In this study, a multi-layer model of skin was developed to simulate wrinkling. The model consisted of the stratum corneum,(More)
The complex mechanical properties of skin have been the subject of much study in recent years. Several experimental methods developed to measure the mechanical properties of skin in vivo, such as suction or torsion, are unable to measure skin's anisotropic characteristics. An experiment characterising the mechanical properties of in vivo human skin using a(More)
Determining the mechanical properties of an individual's skin is important in the fields of pathology, biomedical device design, and plastic surgery. To address this need, we present a finite element model that simulates the skin of the anterior forearm and posterior upper arm under a rich set of three-dimensional deformations. We investigated the(More)
We discuss Topic Detection, a sub-task of the Topic Detection and Tracking (TDT) Project, and present a system that uses the linguistic and temporal features of news reportage to enhance the discovery of events in a collection of news articles. We describe an online application of these techniques that constructs topical clusters from live news feeds. We(More)
The non-linear, anisotropic, and viscoelastic properties of human skin vary according to location on the body, age, and individual. The measurement of skin's mechanical properties is important in several fields including medicine, cosmetics, and forensics. In this study, a novel force-sensitive micro-robot applied a rich set of three-dimensional(More)
One of the outward signs of the aging process of human skin is the increased appearance of wrinkles on its surface. Clinical studies show that the increased frequency of wrinkles with age may be attributed to changes in the composition of the various layers of skin, leading to a change in mechanical properties. A parameter study was performed on a(More)
AIM The achievement of a well-healed wound depends on many factors including its size and location on the body and the properties of the skin. The aim of this study is to develop computational wound closure models and compare the results of using different excision shapes. METHODS Finite element models were developed that simulated the incision, excision(More)
BACKGROUND/PURPOSE Human skin is a complex multilayered material. Although there are many numerical models of skin in existence, which accurately simulate several of its complex mechanical characteristics, there are very few models that simulate wrinkling - a phenomenon common to all human skin. The purpose of this study was to develop a multilayer model of(More)
Characterising the mechanical properties of human facial skin is a challenging but important endeavour with applications in biomedicine, surgery simulation, forensics, and animation. Many existing computer models of the face are not based on in vivo facial skin deformation data but rather on experiments using in vitro facial skin or other soft tissues. The(More)
The healing of wounds is a complex process and the contraction of the resulting scar can have a negative impact on the neighbouring skin. A finite element model of skin simulating the contraction of a scar and deformation of the surrounding skin is presented. The skin is represented by an orthotropic-viscoelastic constitutive law, which is validated against(More)