Copper is a useful material to show the high electric conductivity, heat conductivity and, antibacterial and virus inactivating effects. A blue diode laser with wavelength of 450 nm one suitable lasers for copper processing. High intensity precision materials processing technology using were developed. power 200 W was applied selective melting additive manufacturing. coating on stainless steel ...

in this work, the influence of different edm parameters (pulse current, pulse voltage, pulse on-time , pulse off-time) in finishing stage on  the surface roughness (r a )  as a result of application copper electrode to a workpiece( cold work steel  din1.2379)  has been investigated. design of the experiment was chosen as full factorial. statistical analysis has been done and artificial neural n...

Paper presents an application of temperature-time method for measurement local losses in magnetic steel. Developed system is described with focus on design sensors and choice instruments. Chosen equipment tested a DC circuit designed aluminum copper conductors. Same used loss steel rings. Measurement errors due to non-uniform distribution inside heat dissipation surrounding medium are analyzed ...

A nondestructive study of the internal structure and compositional gradient of dissimilar metal-alloy welds through energy-resolved neutron imaging is described in this paper. The ability of neutrons to penetrate thick metal objects (up to several cm) provides a unique possibility to examine samples which are opaque to other conventional techniques. The presence of Bragg edges in the measured n...

In the framework of the Low Emittance Gun (LEG) project, high gradient acceleration of a low emittance electron beam will be necessary. In order to achieve this acceleration, a-500 kV, 250 ns FWHM, pulse will be applied between two electrodes. Those electrodes should sustain the pulsed field without arcing, must not outgas and must not emit electrons. Ion back bombardment, and dark current will...

In the framework of the Low Emittance Gun (LEG) project, high gradient acceleration of a low emittance electron beam will be necessary. In order to achieve this acceleration a-500 kV, 250 ns FWHM, pulse will be applied in between two electrodes. Those electrodes should sustain the pulsed field without arcing, must not outgass and must not emit electrons. Ion back bombardment, and dark current w...

In this study, an experiment is conducted to optimize the machining parameters of the Electric Discharge Machining on EN 31 tool steel with copper as an electrode considering the performance characteristics using the Taguchi method. Performance characteristics Material Removal Rate has been chosen to evaluate the machining effects. Parameters selected in this study are Pulse on time, Pulse off ...

The degradation of materials due to corrosion induced by microorganisms, such as bacteria, is generically designed as microbial induced corrosion. This capacity of bacteria has been used for micromachining some metals by creating on the surface of the metal masks that only exposed the surface to be machined. Due to their small size the bacteria are able to create microchannels on the exposed ar...