A narrowband signal is subjected to less masking from a simultaneously presented notched masker if it is preceded by a precursor that occupies the same spectral region as the masker, a phenomenon referred to as enhancement. The present study investigated (i) the amount of enhancement for the detection of a narrowband noise added to a notched masker, and (ii) masking patterns associated with the...

A planer monopole ultra wideband (UWB) antenna with single and dual band notched characteristics are presented in this article. Proposed antenna consists of simple rectangular shaped patch with sequential notches which is inserted in two lower corners. In order to obtain band notched properties ‘U’ shaped conductor backed plane (CBP) is embedded. Multiple ‘U’ shaped CBP can realize multiple fre...

This paper tells about the CFD analysis of 2D Canard arrangement in supersonic cruise missiles. High heat dissipation rate causes the Canards to reduce its primary work of providing rotational stability to missile. This paper discusses about the criteria of choosing notched canard model against the present model. The models were designed in GAMBIT and analysed using FLUENT. Various pressure, te...

The heat treatments have been designed to vary the matrix microstructure in P/M processed SiC reinforced 7xxx Aluminum alloys to determine the effects of matrix microstructure, interface behavior on the mechanical properties. Smooth tensile, notched bend tests were performed. The results conclude that the clustered regions have been observed as preferred initiation sites in both tensile and not...

The paper presents FE-results on the behaviour of concrete under plane strain conditions. The material was modelled using a simple isotropic damage continuum model. The model was enriched by non-local terms to avoid a pathological mesh-sensitivity and to obtain a well-posed rate boundary value problem. The constitutive model was used to simulate localization of deformation in 3 benchmark proble...

A new planar monopole antenna which covers 3G, Bluetooth, WiMAX, and the UWB bands and also exhibits dual band-notched characteristic is presented. Presented antenna consist a square radiating patch with a pair of L-shaped slits, and two U-shaped slot and a ground pale with a V-shaped strip. The proposed antenna has been successfully simulated and measured. Experimental results shows that the p...

Applications of magnesium alloys as biodegradable orthopaedic implants are critically dependent on the mechanical integrity of the implant during service. In this study, the mechanical integrity of an AZ91 magnesium alloy was studied using a constant extension rate tensile (CERT) method. The samples in two different geometries that is, circumferentially notched (CN), and circumferentially notch...