The corrosion resistance of mild steel (used to make hull plates in ship technology) seawater before paint coating (Nippon paint, weatherbond advance) and after has been measured by electrochemical studies such as Polarisation study AC impedance spectra. It is observed that coating, the increases. Polarization reveals linear polarization increases current decreases. spectra reveal presence char...

Grouping is a global partitioning process that integrates local cues distributed over the entire image. We identify four types of pairwise relationships, attraction and repulsion, each of which can be symmetric or asymmetric. We represent these relationships with two directed graphs. We generalize the normalized cuts criteria to partitioning on directed graphs. Our formulation results in Raylei...

This paper deals with a nonlinear adaptive autopilot design for agile missile systems. In advance of the autopilot design, an investigation of the agile turn maneuver, based on the trajectory optimization, is performed to determine state behaviors during the agile turn phase. This investigation shows that there exist highly nonlinear, rapidly changing dynamics and aerodynamic uncertainties. To ...

Experimental and numerical investigations are performed to provide an assessment of the transport behavior ultrasonic oscillatory two-phase flow in a microchannel. The work is inspired by observed innovative fabric drying device using piezoelectric bimorph transducer with microchannels, where water-air transported harmonically oscillating microchannels. exhibits highly unsteady as water air int...

In order to improve the feasibility of low-elevation height measurement for meter-wave multiple-input multiple-output (MIMO) radar, a virtual sub-array-level beam splitting algorithm is proposed. The can solve coherence problems caused by low-angle multipath reflection, target reflection wave and direct coupling, quickly measure low elevation angle on flat ground, then obtain through geometric ...

The present investigation deals  with the reflection and transmission phenomenon due to incident plane longitudinal wave at a plane interface between inviscid fluid half-space and a thermoelastic diffusion solid half-space with dual-phase-lag heat transfer (DPLT) and dual-phase-lag diffusion (DPLD) models. The theory of thermoelasticity with dual-phase-lag heat transfer developed by Roychoudhar...

In every tunnel boring machine (TBM) tunneling project, there is an initial low production phase so-called the Learning Phase Period (LPP), in which low utilization is experienced and the operational parameters are adjusted to match the working conditions. LPP can be crucial in scheduling and evaluating the final project time and cost, especially for short tunnels for which it may constitute a ...