V. Seshu Bai

TL;DR: In this article, the effect of lattice defects at the unit cell level created by the stress field when two rare earths with different ionic radii are mixed at the rare earth site, on the flux pinning and critical current density in Y1-xDyxBa2Cu3O7-δ thin films prepared by the pulsed laser deposition technique, was investigated using SQUID magnetometry at different temperatures for x = 0 to 1 in steps of 0.2.

TL;DR: In this paper, the elastic moduli of the composites were determined from ultrasonic velocities and were analyzed as a function of the volume fraction of the reinforcement, and the observed variation was discussed in the context of existing theoretical models for the effective elastic modulus of two-phase systems.

TL;DR: In this paper, a SiC p /Al 2 O 3 ceramic matrix composites were investigated for mechanical properties such as flexural strength, fracture toughness and hardness; the composite specimens were evaluated using standard procedures recommended by the ASTM.

TL;DR: In this paper, the properties of metal matrix composites were characterized for phase composition, microstructure, density, porosity and coefficients of thermal expansion, and the results were compared with existing models on the behaviour of macroscopic properties of composite materials.

TL;DR: In this article, it was shown that in those alloys in which the linear chains of magnetic atoms are not disturbed, the exchange coupling constants become positive leading to ferromagnetic coupling when the distance between Mn atoms becomes equal to 2.83 A or more.