Determination of the optimum loading path (internal pressure- axial feeding) to restrict the Bursting, buckling and wrinkling through tube hydroforming process is necessary to produce an acceptable tube. In this paper, the wrinkling and fracture criteria are implemented to an finite element code devoted to the simulation of tube hydroforming processes. Using the ANSYS parametric design language...

introduction: tube thoracostomy complications depend on the operator’s skill, patients’ general condition and the place in which the procedure is done. the present study aimed to compare the quality and complications of tube thoracostomy carried out by emergency medicine residents (emrs) and surgery residents (srs). methods: this cohort study was conducted on 18-60 years old trauma patients in ...

Tube hydroforming (THF) process is used to produce the complex components from the initial cylindrical tubes. In this paper, T- shape component was formed using a tube hydroforming machine and the residual stresses of hydroformed tube was determined by hole drilling method. Subsequently, the thickness distribution and residual stresses of final tube were investigated using experimental and fini...

abstract  background: uncuffed endotracheal tube(ett) were considered for children less than 8 years. meanwhile, aspiration around ett in patients undergoing adenotonsillectomy is concerned.we compared cuffed versus uncuffed ett regarding respiratory complications following adenotonsillectomy.  methods: 128 children aged 2-8 yr were divided to two groups of 64 each. uncuffed and cuffed tubes we...

Parallel Tubular Channel Angular Pressing (PTCAP) process is a novel recently developed severe plastic deformation (SPD) method for producing ultrafine grained (UFG) and nanograined (NG) tubular specimens with excellent mechanical and physical properties. This process has several advantageous compared to its TCAP counterparts. In this paper, a fine grained AZ91 tube was fabricated via multi pas...

● Tracheal tube—commonly called an endotracheal tube. Note that a tracheal tube may be incorrectly placed in the esophagus, so the term does not mean a correctly positioned tube in the trachea. Moreover, a tracheostomy tube is not the same as a tracheal tube as used in these guidelines, even though both tubes are placed in the trachea. The procedure of placing a tracheal tube is still called en...