Abstract The aim of this work is to highlight the evolution physico-chemical properties peroxide crosslinked polyethylene (XLPE) insulation material exposed electrical aging. Specific analysis and characterization studies were carried out determine effect aging on different samples at micro macro levels. Based analytical investigations, it was shown that yielded significant changes in chemical ...

INTRODUCION: Improved wear resistance of crosslinked UHMWPE has been well demonstrated in both hip and knee [1-4]. A reduction of 70% can be shown in knee simulators from conventional crosslinked tibial inserts (CXPE) gamma-irradiated at 3.5Mrad to 7Mrad highly crosslinked inserts (HXPE). Hip simulator models indicated that debris size decreased with increased crosslinking [5]. In the knee it h...

Ultra-high molecular weight polyethylene (UHMWPE) has been widely used as acetabular cup in total hip replacement (THR) and tibial component in total knee replacement (TKR). Crosslinking of UHMWPE has been successful used to improve its wear performance leading to longer life of orthopedic implants. Crosslinking can be performed by radiation or organic peroxides. Peroxide crosslinking is a conv...

This paper presents a theoretical and experimental study on the ampacity of the prefabricated straight-through joint of a 110 kV high voltage cable. Thermal modelling revealed that the critical spot limiting the ampacity of this type of cable joint is located on its crosslinked polyethylene (XLPE) insulation section. The axial distribution of the thermal field in this type of cable joint was al...

INTRODUCTION: Metal on metal bearings exhibit a biphasic wear mode, starting with a ‘bedding-in’ period of higher wear followed by a lower steady wear which may have favorable total wear [1]. However, there are cases of ‘run-away’ wear resulting in significantly higher total wear for the metal on metal bearing [2,3]. Many of these ‘run-away’ cases need to be revised which brings up the followin...