Abstrac: In this paper, the mechanical properties of high density polyethylene (HDPE grade 3840) produced by Bandare ImamIran, mixed with the wood and bagasse as fillers with 10-50 % w/w have been studied. The maximum tensile strength was observed at 10% w/w of fillers ratio. The elongation, impact strength and fracture energy were decreased with increasing of fillers ratio while the Young modu...

We propose an abstract two-level algorithm with convergence independent of the coarse-space size. The abstract algorithm is applied to problems of solids discretized on unstructured meshes. With no regularity assumptions we prove uniform convergence with respect to coarse-space size, domain, essential boundary conditions and jumps in Young modulus. Numerical experiments connrm the theory and sh...

In high magnetic fields a noticeable deformation of superconductors occurs in the critical state because of the magnetic force density f5j3B, where j is the current density and B is the magnetic field. This results in an anomalous irreversible magnetostriction ~‘‘suprastriction’’! and shape distortion of type-II superconductors with strong pinning. Similar as in magnetic fluid dynamics the stre...

The tensile properties of an aluminium-based metal matrix composite reinforced with a-alumina platelets were investigated from an experimental and a theoretical point of view. An increase in Young modulus, 0,2% proof stress, flow stress and ultimate tensile strength was observed over the unreinforced metal. These improvements were obtained at the expense of the tensile ductility. The experiment...