B. Liu, T. C. Zhu
Department of Radiation Oncology, School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
Deformable image registration is a form of medical image processing that can provide insights into the development of phenomenon and variation in normal anatomical structure over time. Prior to post-operative pleural photodynamic therapy (PDT), a series of CT scans of lungs will be acquired. During PDT treatment, an infrared navigation system is used to contour the lungs and provide real-time ...
S. Saha, A. Ramirez, C. DiBiasio, M. Culpepper
Massachusetts Institute of Technology, Cambridge, MA, USA
Charles Stark Draper Laboratory Inc., Cambridge, MA, USA
Introduction: Flexures are low-cost bearings that are capable of providing motion guidance with high repeatability and low friction (Figure 1). However, applications of flexure bearings are often limited by their low range. This is because motion guidance in flexures is provided by bending/flexing of members; thus, range is limited by the bending stiffness. As the bending stiffness can be ...
Can we use Aquifers to Monitor Magma Chambers? Using COMSOL Multiphysics® to Investigate Subsurface Strain Changes and Their Effect on Hydrological Systems - new
K. Strehlow, J. Gottsmann, A. Rust
University of Bristol, Bristol, UK
Groundwater-bearing geological layers respond to and modify the surface expressions of magmatic activity, and they can also become agents of volcanic unrest themselves. Interpretations of unrest signals as groundwater responses to changes in the magmatic system can be found for many volcanoes and include a wide range of phenomena and suggested processes to explain them (e.g., Newhall et al., ...
A Numerical Study for Rubber Particles Collection Involved in New Thermoforming Composite Process Using COMSOL Multiphysics®
R. Carbone, V. Antonelli, A. Langella, and R. Marissen
Material and Production Engineering Department, Università degli Studi di Napoli Federico II, Napoli, Italy
Institute of Lightweight Structures, Technische Universität München, München, Germany
Design and Production of Composite Structure, Delft University of Technology, Delft, The Netherlands
This paper deal of the forming process applied to the thermoplastic composites. A new thermoforming process that uses rubber particles collection as flexible mould was presented and numerically modeled. A characterization of the rubber in particles form was previously performed to value the material parameters in the user-defined hyperelastic constitutive laws employed in the FEM (Finite Element ...
Leiden, The Netherlands
A model for material damping is presented in terms of internal friction and in terms of a variation of stiffness. In the latter case the idea is that the stiffness increases if elastic energy is stored and decreases if elastic energy is released. In case of a single mass spring system “stiffness” refers to the stiffness of the spring; in case of a continues object ...
D. M. G. Preethichandra1, B. G. L. T. Samaranayake2, A. M. U. S. K. Alahakoon2 and K. Kaneto1
1Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Hibikino, Wakamatusu-Ku, Kitakyushu-Shi, Japan
2Department of Electrical and Electronics Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya, Sri Lanka
This paper characterizes and models the bending motion of the strip-type Ionic Polymer Metal Composites (IPMC) actuators using the theory of Large Deflections of Beams. From here it derives a thermal analogy. The mathematical model has been experimentally verified for an actuator with the dimensions 25mm×2.6mm×0.44 mm.Theoretical and experimental results are compared to show the validity of the ...
Stress State Determination in Nanoelectronic Silicon Devices Coupling COMSOL Multiphysics and a Recursive Dynamical CBED Pattern Simulation
A. Spessot[1,2], S. Frabboni, A. Armigliato, and R. Balboni
Numonyx Advanced R&D NVMTD-FTM, Agrate Brianza, Italy
National Research Center S3, CNR-INFM and Department of Physics, University of Modena e Reggio Emilia, Modena, Italy
CNR-IMM Section of Bologna, Italy
Strained technology is being promoted as the best way to extend the performance of semiconductor transistors. An inhomogeneous layer deposited on top of a silicon device can induce a strong modification in the real silicon strain state, and consequently in its electronic performance. Coupling the finite elements analysis done by COMSOL with a recursive CBED and LACBED dynamical simulation, we are ...
Z. Huijbregts, H. Schellen, and J. van Schijndel
Department of the Built Environment
Eindhoven University of Technology
Eindhoven, The Netherlands
The two wooden cabinets of Jan van Mekeren that are located in Amerongen Castle show comparable wood damage; in particular large cracks in the cabinet doors are clearly noticeable. It is assumed that these cracks were caused by bad indoor climate conditions in the castle. Combined computational modelling of the indoor climate conditions in the castle and the hygroscopic and mechanical ...
Investigation of the Effect of Spinal Defects on Spondylolysis and Stress Fracture of Vertebral Bodies
M.S. Yeoman, C. Quah, A. Cizinauskas, K. Cooper, D. McNally, B. Boszczyk
Continuum Blue, Tredomen, Ystrad Mynach, United Kingdom
The Centre for Spinal Studies and Surgery, Queen’s Medical Centre, Nottingham, United Kingdom
Bioengineering Research Group, Faculty of Engineering, The University of Nottingham, Nottingham, United Kingdom
Spondylolysis (SL) is a defect of the spinal vertebra, and is typically caused by stress fracture of the pars interarticularis bone of the vertebral arch. It is especially common in adolescents who over train in sporting activities. Spina bifida occulta (SBO) is a malformation of the spine where the protruding vertebral bodies are not fully formed. In this study we demonstrate the predisposition ...
K. Vakkund, R. C. Thiagarajan
ATOA Scientific Technologies Pvt. Ltd., Bengaluru, Karnataka, India
Polymer sheets are widely used for glazing and roofing structural applications. The primary design requirements of these polymeric sheets are to resist uniformly distributed wind loading. Conventional building materials such as steel and glass plates are relative stiffer compared to polymeric sheets. The deflection of high stiff plates is about an order lower than polymeric plates. Polymeric ...