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Effects Of Post-Cure On The Mechanical Properties Of Woven Glass-Polyester Composite By Macro and Micro-Mechanical Methods

Filled Blends of Thermoplastic Polymers and Liquid-Crystalline Polymer: Adhesion and Mechanical Properties

Microrheometry for Studying the Rheology and Dynamics of Polymers Near Interfaces

The design of an instrument capable of opto-mechanical studies of the rheology of viscoelastic polymeric fluids near solid interfaces is described. The instrument probes the ‘meso’-scale (length scales of 0 (μm)) and bridges the gap between molecular-scale devices such as the Surface Force Apparatus (SFA) and conventi…

Local Approach Of The Damage Of Multimaterials Loaded In Warping Torsion

Thermal Fatigue Of Aluminium-Based Metal Matrix Composites Studied By Mechanical Spectroscopy

Free Vibration Analysis of Cantilevered Laminated Trapezoidal Plates

Nonequilibrium Thermodynamics – A Tool for Applied Rheologists

GENERIC is reviewed not only as a new general framework for modeling nonequilibrium systems, but also as a new way of thinking about nonequilibrium dynamics. This unified framework of nonequilibrium thermodynamics is shown to be deeply rooted in the ample accumulated experience with nonequilibrium systems and, provide…

Evaluation of Slip Effects in the Capillary Flow of Foams

Foams have been prepared from water added with a surfactant (Sodium-Dodecyl-Sulfate, SDS) and a polymer (Poly-Ethylene-Oxide, PEO) at different concentrations. This work was devoted to a study of the flow properties of the foams. The pressure drops were measured during flow in capillary tubes (2.5, 3.5 and 4 mm) in la…

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The Role of Damage on the Tensile Behavior of a Knitted Fabric Composite - A Preliminary FE Study

Characterization of Octahedral Substitutions in Kaolinites Using Near Infrared Spectroscopy

Abstract Fourier transform infrared (FTIR) spectroscopy investigations in the near infrared (N1R) region of synthetic and natural kaolinites with various octahedral substitutions have been carried out in order to elucidate the relationships between the substituted cations and specific features of the NIR spectra. The…

An In Situ X‐Ray Absorption Spectroscopy Investigation of the Effect of Sn Additions to Carbon‐Supported Pt Electrocatalysts: Part I

Carbon‐supported platinum (Pt/C) with an adsorbed layer of underpotential deposited (upd) Sn is a much better catalyst for the methanol oxidation reaction (MOR) than a carbon‐supported platinum‐tin (PtSn/C) alloy. In situ X‐ray absorption (XAS) was used to determine the differences in the effects that the two methods…

Degradation of Starch–Poly(β-Hydroxybutyrate-Co-β-Hydroxyvalerate) Bioplastic in Tropical Coastal Waters

Extruded bioplastic was prepared from cornstarch or poly(beta-hydroxybutyrate-co-beta-hydroxyvalerate) (PHBV) or blends of cornstarch and PHBV. The blended formulations contained 30 or 50% starch in the presence or absence of polyethylene oxide (PEO), which enhances adherence of starch granules to PHBV. Degradation of…

The Material Basis for Reduced Mechanical Properties in oim Mice Bones

Osteogenesis imperfecta (OI), a heritable disease caused by molecular defects in type I collagen, is characterized by skeletal deformities and brittle bones. The heterozygous and homozygous oim mice (oim/+ and oim/oim) exhibit mild and severe OI phenotypes, respectively, serving as controlled animal models of this dis…

Mineralogical Interference on Kaolinite Crystallinity Index Measurements

Abstract This study examines the influence of minerals and amorphous phases associated with kaolin and kaolinitic rocks on kaolinite crystallinity indices (KCI) derived from X-ray diffraction (XRD) data in order to select the best index for systematic studies of commercial kaolins or geological sequences. For this pur…

Origin of the Lone Pair of α-PbO from Density Functional Theory Calculations

We present ab initio calculations using density functional theory (DFT) within the local density approximation (LDA) on PbO in the α-phase and the idealized CsCl structure. The electron densities clearly show that CsCl-structured PbO has a symmetric lead site while α-PbO shows asymmetry, forming what could be describe…

Statistical reconstruction of three-dimensional porous media from two-dimensional images

A method of modelling the three-dimensional microstructure of random isotropic two-phase materials is proposed. The information required to implement the technique can be obtained from two-dimensional images of the microstructure. The reconstructed models share two-point correlation and chord-distribution functions wi…

Elasticity, stability, and ideal strength ofβ-SiC in plane-wave-basedab initiocalculations

On the basis of the pseudopotential plane-wave method and the local-density-functional theory, this paper studies energetics, stress-strain relation, stability, and ideal strength of $\ensuremath{\beta}$-SiC under various loading modes, where uniform uniaxial extension and tension and biaxial proportional extension ar…

Theory of the hysteresis loop in ferromagnets

We consider three mechanisms of hysteresis phenomena in alternating magnetic field: the domain-wall motion in a random medium, the nucleation, and the retardation of magnetization due to slow (critical) fluctuations. We construct a quantitative theory for all these processes. The hysteresis is characterized by two dyn…

High‐Temperature Oxidation of Boron Nitride: I, Monolithic Boron Nitride

High‐temperature oxidation of monolithic boron nitride (BN) is examined at 900–1200°C. Hot‐pressed BN and both low‐ and high‐density chemically vapor‐deposited BN are studied. The oxidation product is B 2 O 3 ( l ) and the oxidation kinetics are sensitive to crystallographic orientation, porosity, and impurity levels.…