Title of Dissertation: CHARACTERIZATION, MODELING, AND OPTIMIZATION OF POLYMER COMPOSITE PIN FINS Raj Bahadur, Doctor of Philosophy, 2005 Directed By: Professor, Avram Bar-Cohen, Mechanical Engineering Increasing electronic product manufacturing volumes and cooling requirements necessitate the use of new materials and innovative techniques to meet the thermal management challenges and to contri...

A new approach for analyzing cracked problems in 2D orthotropic materials using the well-known element free Galerkin method and orthotropic enrichment functions is proposed. The element free Galerkin method is a meshfree method which enables discontinuous problems to be modeled efficiently. In this study, element free Galerkin is extrinsically enriched by the recently developed crack-tip orthot...

INTRODUCTION This study aimed to explore the effect of carbon dioxide (CO2) pneumoperitoneum on tumor proliferation and metastasis in an orthotropic xenograft nude mice model of human renal cell carcinoma (RCC) and evaluate the safety of CO2 pneumoperitoneum laparoscopy for treating RCC. MATERIAL AND METHODS RCC 786-0 cells were injected to establish an orthotropic xenograft model. Fifty nude...

Recent morphological studies have demonstrated a laminar (sheet) organization of ventricular myofibers. Multiaxial measurements of orthotropic myocardial constitutive properties have not been reported, but regional distributions of three-dimensional diastolic and systolic strains relative to fiber and sheet axes have recently been measured in the dog heart by Takayama et al. [30]. A three-dimen...

OBJECTIVE To determine the effectiveness of the use of the SIP score and the quality of life impairment in patients with ileal conduit and orthotropic ileal derivations by Hautmann and AbolEnein/Ghoneim. METHODS Prospectively evaluated 146 patients in different age groups. In 66 patients ileal conduit derivation was performed, in 20 patients orthotropic derivation using Hautman technique was ...

Using ultra-high performance concrete (UHPC) as the pavement layer on orthotropic steel deck (OSD) can greatly enhance rigidity to solve fatigue cracking of and resulting damage layer. However, thin UHPC limits extensive use short stud connector. In this study, three types interfaces were designed by introducing different additives into epoxy matrix, shear properties each interface connector co...

The present work introduces a novel methodology to analyse non-uniform residual stresses in composite materials. For robust determination of complex structures made different layers, it is first necessary prove that stress analysis single layer structure can reliably be accomplished. In unidirectional carbon fibre reinforced epoxy investigated. determination, the integral incremental hole drill...