equal channel angular rolling (ecar) is a severe plastic deformation method that covered plasticdeformation of sheets. in this study, effects of ecar route shave been investigated on themechanical and microstructure properties of explosive-welded al-cu bimetal. at first, the explosivewelding process has been performed to prepare the al-cu bimetals. then, to relieve the stress andpreparing of sa...

In this work, we explore the possibility of using photonic crystal fibers (PCFs) as a fiber-optic sensing platform for structural health monitoring, based on long-period gratings (LPGs). Two types of PCF-LPG sensors are proposed for detection of structure corrosion and vibration, respectively. We numerically and experimentally investigate the behaviors of modal transition in the PCF-LPG humidit...

R.Bęczkowski, Institute of Mechanical Technology, Czestochowa University of Technology, Poland Hardness is one of the components responsible for the resistance to wear. The development of new materials with hardness surface more than 65 HRC is possible with use welding technologies. High chromium cored wires belong to welding materials that are often used to cladding to protect surface. This ar...

A thermal analysis and structure of a ridge single mode waveguide with a metal heater are presented. The steady-state temperature increases linearly and the thermal response becomes slower at the same power consumption, when the under-etched depth in the lower cladding increases. When the upper cladding thickness decreases, the thermal response becomes faster. This shows that a thinner upper cl...

We investigate Bessel-like modes guided in a double cladding fiber where the outer cladding is an aircladding. For very high order LP(0X) -modes, the azimuthal symmetry is broken and the mode is no longer linearly polarized. This is observed experimentally and confirmed numerically. The effect is investigated numerically using a full vectorial modesolver and is observed to be dependent on the f...

A Cr13Ni5Si2-based composite coating was successfully deposited on copper by pulse laser induction hybrid cladding (PLIC), and its high-temperature wear behavior was investigated. Temperature evolutions associated with crack behaviors in PLIC were analyzed and compared with pulse laser cladding (PLC) using the finite element method. The microstructure and present phases were analyzed using scan...