For the production of high-performance polyethylene fibers and tapes by ultra drawing, using solid-state processing disentangled nascent ultra-high molecular weight (UHMWPE), maximum draw ratio is an important design parameter, as it determines degree chain alignment and, therewith, properties final product. It would, therefore, be advantageous to have a fast scanning method estimate drawabilit...

INTRODUCTION The majority of current artificial hip implants use a material combination of ultra-high molecular-weight polyethylene against metal or ceramic. However, it is well documented that the wear debris from these prostheses contributes to osteolysis and ultimate failure of the prosthesis, hence alternative materials have been sought, such as metalon-metal and ceramic-on-ceramic [1]. Mor...

Yarns of fiber assemblies such as ropes would abrade with each other during repeated stretching or bending. The yarn on abrasion failure is a main reason for the final assembly result relative movement to other. To explore influencing factors and mechanism, this work, taking Ultra High Molecular Weight Polyethylene Fiber (UHMWPE) research object, discussed influences abrading frequency tension ...

Most total knee replacement joints consist of a metal femoral component made from a cobalt-chromium- molybdenum (CoCrMo)-alloy and a tibial component with an ultrahigh molecular weight polyethylene (UHMWPE) bearing surface. Wear of the UHMWPE remains the primary disadvantage of these implants. The allergic potential ascribed to CoCrMo-alloys is a further concern. Other metallic alloys with and ...

In the present work, multiwalled carbon nanotube (MWNT) reinforced UHMWPE composite films were prepared by electrostatic spraying followed by consolidation. X-ray diffraction and differential scanning calorimetry studies showed a decrease in the crystallinity of UHMWPE due to the nature of the fabrication process as well as addition of MWNT. Tensile test showed an 82% increase in the Young’s mo...

Bone plates are essential for bone fracture healing because they modify the biomechanical microenvironment at site to provide necessary mechanical fixation fragments. This paper addresses use of composite in long-bone fractures such as transverse femur. However, stress shielding due metal can be reduced by designing implants with Bio-composites that involve Ultra high molecular polyethylene rei...

Managing fractures of distal humerus in patients with rheumatoid arthritis (RA) is technically challenging. Total elbow arthroplasty (TEA) is one of the treatment options for these fractures. While elbow motion is largely regained by TEA, comminuted condyle fragments are often ignored. Although numerous approaches for repair of condylar fragments around TEA are described, any universal fixation...

Understanding friction between material pairs is very crucial when utilizing the materials in various applications, including mechanical and biological systems. In the present investigation, efforts were made to study the influence of surface texture and roughness on friction and transfer film formation during sliding of Ultra High Molecular Weight Polyethylene (UHMWPE) pins against steel plate...