Using a post-Newtonian diagnostic tool developed by Mora and Will, we examine numerically generated quasiequilibrium initial data sets that have been used in recently successful numerical evolutions of binary black holes through plunge, merger and ringdown. We show that a small but significant orbital eccentricity is required to match post-Newtonian and quasiequilibrium calculations. If this pr...

Abstract In this review article, the joining of carbon fiber-reinforced polymer composite with metallic materials by using friction welding techniques was discussed and effects process parameters on weld properties were evaluated. Major involved in plunge depth (PD), dwell time, tool rotational speed. A successful joint poly laminate (CF-PPS)-metal formed an interlayer film additional polypheny...

In this investigation, dissimilar material AA6061-T6 and Cu B370 were joined by friction stir welding (FSW). This paper presents a feasibility study of FSW to join Al-alloy Cu-alloy. The experiment was conducted using general full factorial design varying the tool rotation speed, weld probe offset, keeping plunge depth constant. research work, statistical model established build connection betw...

Abstract The paper investigates the modelling and optimization of notch-repaired/friction stir stitched AISI 201 stainless steel welds via use a non-consumable tool-based repair process. process employs sequential hopping-stitching approach. This approach involves application two intercepted completely overlapped plunging actions probe-less titanium carbide tool to create an effective refilling...

Abstract The use of natural rocks as cutting tool material poses an environmentally friendly alternative to conventional materials. So far, however, the basics grinding processes for rock tools have not been systematically investigated. This study, therefore, presents investigation removal mechanisms four different types and a mono mineral via scratch tests analogous face plunge process used in...

We compare the performances of the templates defined by three different types of approaches: traditional post-Newtonian templates ~Taylor approximants!, ‘‘resummed’’ post-Newtonian templates assuming the adiabatic approximation and stopping before the plunge (P approximants!, and further ‘‘resummed’’ postNewtonian templates going beyond the adiabatic approximation and incorporating the plunge w...

We compare the performances of the templates defined by three different types of approaches: traditional post-Newtonian templates (Taylor-approximants), “resummed” post-Newtonian templates assuming the adiabatic approximation and stopping before the plunge (P-approximants), and further “resummed” post-Newtonian templates going beyond the adiabatic approximation and incorporating the plunge with...

Estimation of the fast polarization direction of shear seismic waves that deviate from horizontal axis is a valuable approach to investigate the characteristics of the lower crust and uppermost mantle structures. The lattice preferred orientation of crystals, which is generally parallel to the downward or upward flow of the mantle or crust, is an important reason for the occurrence of fast axis...

Turbulences in liquids caused by jets can be of interest for numerous applications. For one, it concerns flood spillway structures within civil engineering but also is key in any area where turbulent mixing is present. The numerical simulations of jets that impinge into plunge pools are still in an early phase of their development. This paper verifies the accuracy of the Flow-3D software packag...

Micro-friction stir spot welding (µFSSW) is one type of that suitable for joining lightweight materials. One the challenges in materials with µFSSW material easily perforated, or join not strong enough, so it necessary to select right parameters. In this article discusses about investigates micro-Friction Stir Spot Welding parameters on weld geometry, mechanical properties, and metallography di...