In this research, two different carbonaceous materials (Graphite:G and Petrocoke:P) were separately compared in terms of the carbothermic reduction of hematite and anatase in order to synthesize Fe-TiC nanocrystalline composite by mechanically activated sintering method. Powders were activated in a planetary high-energy ball mill under argon atmosphere for 0, 2, 5, ...

The interior pore of open-cell aluminium foams filled with bronze is a new method preparing composite. voids were fabricated by in situ thermal decomposition space-holder powder metallurgical sintering process. Cu3Sn phase content observed to increase through transformation at the expense Cu6Sn5 and aluminium-matrix during isothermal aging. effect porosity on interface microstructure between fi...

In this paper simple quartic trigonometric polynomial blending functions, with a tensionparameter, are presented. These type of functions are useful for constructing trigonometricB´ezier curves and surfaces, they can be applied to construct continuous shape preservinginterpolation spline curves with shape parameters. To better visualize objects and graphics atension parameter is included. In th...

In this paper, a model for the prediction of fatigue life degradation fiber-reinforced (FRP) composite materials exposed prolonged periods to real marine environments is proposed. The data collected during previous phases more comprehensive research environment-induced changes mechanical properties in FRP composites are used assess influence these on durability characteristics composites. Atten...

A new multiscale micromechanical approach is developed for the prediction of the behavior of fiber reinforced composites in presence of fiber clustering. The developed method is based on a coupled twoscale implementation of the High-Fidelity Generalized Method of Cells theory, wherein both the local and global scales are represented using this micromechanical method. Concentration tensors and e...

various scaling methods such as relative viscosity, peclet and reynolds scaling were used to find the best scaling law. scaling and modeling of the flow curves of various model emulsions consist of tragacanth gum (tg) (0.5, 1 % wt), oleic acid (5, 10% v/v) and wpi (2, 4 % wt) were investigated and the best models were selected. as these emulsions are non-newtonian, they do not obey the usual, si...

Reliable damage detection is one of the most critical tasks in composite plate structures. Ultrasonic guided waves are acknowledged as an effective way of structural health mo...

Given a family C = {C 1 , C 2 , ..., C n } of n simple (Jordan) curves which intersect pairwise in finitely many points, we say that it is an independent family if each of the 2 n sets is not empty, where X j denotes one of the two connected components of the complement of C j (that is, each X j is either the interior or the exterior of C j). If, moreover, each of the sets in (*) is connected, ...

The purpose of this paper is to provide yet another solution to a fundamental problem in computer aided geometric design, i.e., constructing a smooth curve satisfying given endpoint (position and tangent) conditions. A new class of curves, called optimized geometric Hermite (OGH) curves, is introduced. An OGH curve is defined by optimizing the magnitudes of the endpoint tangent vectors in the H...

Single-index quantile regression (QR) models can avoid the curse of dimensionality in nonparametric problems by assuming that response is only related to a single linear combination covariates. Like standard parametric or QR whose estimated curves may cross, single-index also suffer crossing, leading an invalid distribution for response. This issue has attracted considerable attention literatur...