Wire electrical discharge machining (WEDM) is a special form of traditional electrical discharge machining in which the electrode is a continuously moving conducting wire. The mechanism of metal removal in wire electrical discharge machining involves the complex erosion effect from electric sparks generated by a pulsating direct current power supply. The sparks generated between two closely spa...

We study the variation in the differential conductance G=dj /dV of a normal metal wire in a superconductor/ normal metal heterostructure with a cross geometry under external microwave radiation applied to the superconducting parts. Our theoretical treatment is based on the quasiclassical Green’s functions technique in the diffusive limit. Two limiting cases are considered: first, the limit of a...

objective: the purpose of this study was to evaluate the transverse strength of one brand of denture base material repaired with two autopolymerized acrylic resins with and without wire reinforcement. materials and methods: eighty samples (2.5×10×65 mm3) were fabricated and divided into five groups. the control group was left intact. groups b and d specimens were repaired with autopolymerizing ...

A unified treatment of the cohesive and conducting properties of metallic nanostructures in terms of the electronic scattering matrix is developed. A simple picture of metallic nanocohesion in which conductance channels act as delocalized chemical bonds is derived in the jellium approximation. Universal force oscillations of order ́FylF are predicted when a metallic quantum wire is stretched to ...

Terahertz (THz) pulses are applied in areas as diverse as materials science, communication and biosensing. Techniques for subwavelength concentration of THz pulses give access to a rapidly growing range of spatial scales and field intensities. Here we experimentally demonstrate a method to generate intense THz pulses on a metal wire, thereby introducing the possibility of wave-guiding and focus...

The wire cut EDM is one of the most important machining process for technologists in the field of moulds, dies and in precision manufacturing .The wire electrical discharge machining producing parts with in very short period , the demand over the time increases extensively .So that an extensive research work has been carried out to optimize the parameters of the process by eliminating trial and...

While a broadband metamaterial perfect absorber (MPA) has been implemented and proposed intensively in recent years, an ultra-broadband perfect absorber with polarization selectivity has not been realized in literature. In this work, we propose a configuration of polarization-selective (PS) MPA with ultra-wide absorption bandwidth. The aluminum wire grid is integrated on top of the ultrathin-me...

Percutaneous balloon mitral valvoplasty (PBMV) has become the treatment of choice for severe pliable rheumatic mitral stenosis. The multi-track system is a recent variation of the double-balloon technique and is easier owing to the use of a monorail balloon and a simple, single-guidewire approach. In the present study, we used the double-coil Inoue metal wire with a multi-track balloon instead ...

A metal wire attached to a weight can cut through a block of ice without cutting it. This phenomenon is due to the fusion of ice under the wire, where the pressure is greater, and refreezing of water behind the wire, where the pressure is lower. Bottomley (1872) was the first to discover this effect. He also observed that a wire of low thermal conductivity, for a given diameter and mass, will p...

This paper describes an approximate method for rapidly generating reflectance functions for highly anisotropic materials. This is applied to the rendering of images of burnished metal. A method is then developed for rendering wire-frame drawings which have a wire-like appearance. Such wire-like elements are "grown" or created on the surface of parametric patches and the results resemble furry a...