Total knee arthroplasty is on the rise worldwide. Despite its success, revision surgeries are also increasing. According to American Joint Replacement Registry 2020, 3.3% of due wear, and 24.2% mechanical loosening. The combination shear stresses wear particles occurring at bone/implant interface can lead local osteolysis. Although partially driven by joint friction, relatively little known abo...

Accumulative roll bonding (ARB) was used to fabricate the Cu-Zn multilayer and Cu-Zn solid solution. A lamellar structure with the hardness of about 130 VHN was formed after eight ARB cycles. Following to the suitable heat treatment, a solid solution with a uniform microstructure and hardness of about 57 VHN was produced. The dominant wear mechanism in the ARB processed multilayer was found to ...

Arthroplasty, the practice of rebuilding diseased biological joints using engineering materials, is often used to treat severe arthritis of the knee and hip. Prosthetic joints have been created in a “biomimetic” manner to reconstruct the shape of the biological joint. We are at a disadvantage, however, in that metals and polymers used to replace bone and articular cartilage often wear out too s...

Wear particles generated due to the relative sliding of roll and sheet metal in bite are one main factors that contaminate surface a cold rolled steel sheet. The details wear mechanisms contact individual roll-sheet asperities define total amount generated. In this paper, micro-mechanical experimental approach is coupled with material point method (MPM) scratch simulations study friction behavi...

The back-up rolls of hot strip mills wear considerably under the conditions high temperature and heavy load, which affects roll service period stability profile control. Serious uneven wear, short periods, spalling problems occurred on conventional upstream stand CVC in 1500 mm continuous rolling production lines. Through finite element simulations, are determined to be caused by configuration ...

The final hot strip profile is a superposition of the roll initial crown, the roll bending and flattening crown, the roll wearing crown and the roll thermal crown. In this research, linear regression models are proposed to predict the roll force, the roll wearing crown and the roll thermal crown using experimental data provided by Mobarake Steel Complex (MSC). The short beam theory based on ela...

The outer surface of the tube is worn under interaction between velocity difference and rolling pressure, in process circular into a rectangular tube. In order to predict wear depth, according characteristics roll forming, causes forming are analyzed. finite element model was established based on Archard theory, 40 mm × 27.5 3 SUS304 stainless steel simulated. simulated results were compared wi...