The works deals with a macroscopically isotropic energetic material based on triamino-trinitrobenzene (TATB) crystals bonded with a small volume fraction of a thermoplastic polymer. This material is shown experimentally to display an irreversible thermal expansion behavior characterized by dilatancy and variations of its thermal expansion coefficie...
Published in Inorganic Materials: Applied Research
AbstractWe consider the principles of creating organosilicon natural-drying coatings with thermal resistance up to 1200°C and minimal internal stresses and present the design of a heat-shielding tile for a life-saving appliance capable of overcoming a burning oil slick. The necessary heat-shielding properties of the tile, providing an increase in t...
Published in Nanomaterials
The influence of magnetic anisotropy, post-processing conditions, and defects on the domain wall (DW) dynamics of amorphous and nanocrystalline Fe-, Ni-, and Co-rich microwires with spontaneous and annealing-induced magnetic bistability has been thoroughly analyzed, with an emphasis placed on the influence of magnetoelastic, induced and magnetocrys...
Published in Doklady Physical Chemistry
AbstractThe effect of low temperature on the properties of moisture-saturated glass-fiber-reinforced plastic KAST-B was investigated by studying acoustic emission. During cooling of dried and moisture-saturated specimens with surface defects, the rms acoustic emission and the acoustic emission count rate remain within the background noise. It was d...
Crack growth kinetics in crystalline materials is examined both from the point of continuum mechanics and discrete dislocation dynamics. Kinetics ranging from the Griffith crack to continuous elastic-plastic cracks are analyzed. Initiation and propagation of incipient cracks require very high stresses and appropriate stress gradients. These can be ...
Published in Sensors (Basel, Switzerland)
Magnetic microwires can present excellent soft magnetic properties and a giant magnetoimpedance effect. In this paper, we present our last results on the effect of postprocessing allowing optimization of the magnetoimpedance effect in Co-rich microwires suitable for magnetic microsensor applications. Giant magnetoimpedance effect improvement was ac...
Published in Sensors (Basel, Switzerland)
Thin magnetic wires can present excellent soft magnetic properties (with coercivities up to 4 A/m), Giant Magneto-impedance effect, GMI, or rectangular hysteresis loops combined with quite fast domain wall, DW, propagation. In this paper we overview the magnetic properties of thin magnetic wires and post-processing allowing optimization of their ma...
Published in Journal of Friction and Wear
AbstractA numerical-analytical method is proposed for calculating the contact pressures and internal stresses arising in the coating and substrate during indentation by a smooth indenter of arbitrary shape. This method was used to analyze the indentation of two coating-substrate compositions differing in the thickness of the coating by a Berkovich ...
Published in Russian Journal of Nondestructive Testing
The results of measuring residual strains/stresses in the VAMAS international calibration block with the STRESS neutron diffractometer installed in the horizontal channel of the IR-8 reactor at Kurchatov Institute are presented. The measurement results are in good agreement with calculated stress values. The measurements have shown that the STRESS ...
Published in Journal of Friction and Wear
AbstractThe effect of residual stresses that arise during the treatment of friction-pair surfaces by various techniques on the rate of damage accumulation caused by contact fatigue is considered for cyclic loading of bodies under rolling friction. It is assumed that the rate of damage accumulation is a function of the peak values of the principal s...
