In this paper, a displacement-based, variationally consistent, two variable refined theory for shear deformable beams is presented. The beam is assumed to be of linearly elastic, homogeneous, isotropic material and has a uniform rectangular cross-section. In this theory, the beam axial displacement and beam transverse displacement consist of bending components and shearing components. The assum...

Lateral shearing interferometry is a simple and accurate method of measuring the shape of an optical wave front. However, the complex mathematics required in reduction of the interferograms has limited the adoption of this interferometric technique. A data reduction technique using Fourier analysis methods has been developed which makes lateral shearing interferogram reduction more flexible. Th...

We report a low-pressure microfluidic deoxyribonucleic acid (DNA) fragmentation device based on a combination of mechanical hydrodynamic shearing and low temperature sample heating. Conventional DNA fragmentation based on hydrodynamic shearing is capable of achieving fragment lengths (FL) < 10k bp with pressures ∆P > 1 bar. The application of a small amount of additional thermal energy to the b...

We give an analysis of the stability and uniqueness of the simply laminated microstructure for all three tetragonal to monoclinic martensitic transformations. The energy density for tetragonal to monoclinic transformations has four rotationally invariant wells since the transformation has four variants. One of these tetragonal to monoclinic martensitic transformations corresponds to the shearin...

High temperature differences between the ceramic parts in thermo-electric modules (TEMs) intended for high temperature applications makes the TEMs vulnerable to the elevated thermal stress leading to possible structural (mechanical) failures. The problem of reducing the interfacial shearing stress in a TEM structure is addressed using analytical and finite-element-analysis (FEA) modeling. The m...

This study focuses on the dynamics of the Taylor-Couette Vortex Flow (TVF) in a photo-bioreactor in which CO2 is changed to O2 with high efficiency by the photosynthesis ability of micro algae. Stirring by means of a screw propeller is generally used for a simple agitation. However, the problem is that there exists a very high shearing flow region just near the propeller, which causes the destr...