Selecting appropriate bonding technique is crucial for strengthening and repairing concrete structures as different bonding techniques have different performances. A state-of–the-art review of different bonding techniques that is epoxy bonding technique, prestressed strengthening technique, unbonded anchored technique/mechanically fastened technique using CFRP is dealt and the corresponding adv...

This study provided an investigation of strain evolutions in bonded and unbonded prestressed reinforced concrete beams via nonlinear finite element analyses considering plasticity concrete-damaged plasticity. Usually, non-convergence problems often occurred during due to drastic increase contact stresses stress transferring stages material softening at large deformations. To avoid this issue, m...

It has been suggested that the endurance of cemented femoral reconstructions in total hip arthroplasty is affected by the creep of acrylic cement, but it is not known to what extent cement creeps under loading conditions in vivo, or how this affects load transfer. We have simulated the long-term creep properties of acrylic cement in finite-element models of femoral stem constructs and analysed ...

H₂S plasma created by an electrode-less radio-frequency discharge was used to modify the surface properties of the polymer polyethylene terephthalate. X-ray photoelectron spectroscopy, secondary ion mass spectrometry and atomic force microscopy were used to determine the evolution of the surface functionalities and morphology. A very thin film of chemically bonded sulfur formed on the surface w...

background laceration of the hand extensor tendons is common in the upper extremities, causing soft tissue trauma. these tendons, because of their superficial location and lying adjacent to bones, have a greater tendency to be injured than flexor tendons. objectives the aim of this study was to determine the results of primary repairs of lacerated extensor tendons of the fingers, with respect t...