Some recent experimental observations of highly dynamic crack growth events in thick unidirectional graphite fiber-reinforced epoxy matrix composite plates are presented. The composite plates were symmetrically (mode-I) and asymmetrically (mode-II) loaded in a one-point bend configuration with an edge pre-notch machined in the fiber direction. The lateral shearing interferometric technique of c...

Myopia is one of the most common eye disorders worldwide. It affects about 25% of the population in the West and over 80% in some Asian regions [1]. Changes related to myopic eyes include elongated axial length (AL) and stretching of the retina, choroid and sclera [2]. Patients with severe forms of myopia or high myopia are more susceptible to other ocular abnormalities such as lacquer cracks, ...

X-ray Absorption Near Edge Structure [XANES] of FePt nanoclusters has been studied using a full multiple scattering, self-consistent field [SCF], real-space Green‘s function approach realized via the powerful ab initio FEFF8 code. One purpose of our study is to determine the sensitivity of Pt L3 edge with respect to the size and shape of the FePt nanoclusters. We also give the results of the ca...

OBJECTIVE The objective of this study was to present the outcome of the internal limiting membrane (ILM) peeling flap technique for a treatment-naïve, flat edge (Type II), full-thickness macular hole (MH). METHODS A 52-year-old man presented with complaints of decreased vision and seeing black spot. He was diagnosed to have a flat edge, full-thickness MH, which was confirmed by optical cohere...

This paper deals with a procedure to calculate the elastic stress intensity factors for arbitrary-shaped cracks in plane stress and plane strain problems. An assumed displacement.hybrid finite element model is employed wherein the unknowns in the final algebraic system of equations are the nodal displacements and the elastic stress intensity factors. Special elements, which contain proper singu...

In this study, the frozen stress photoelastic method was used to investigate the three-dimensional effect on the crack growth behavior in a centrally perforated circular cylinder under internal pressure. The inner surface of the cylinder had a star shape, which consisted of six fins. The specimens were capped at the ends and pressurized internally above critical temperature after real cracks we...

GaSb inversion-mode PMOSFETs with atomiclayer-deposited (ALD) Al2O3 as gate dielectric are demonstrated. A 0.75-μm-gate-length device has a maximum drain current of 70 mA/mm, a transconductance of 26 mS/mm, and a hole inversion mobility of 200 cm/V · s. The OFF-state performance is improved by reducing the ALD growth temperature from 300 ◦C to 200 ◦C. The measured interface trap distribution sh...